Trek Powerfly 4 Gen 4 Review

  • Last updated January 17, 2024

robb dorr

  • All of our bikes are electric, but all of our writers are human.

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Trek Powerfly 4 Gen 4 Review: Takeaway

The Trek Powerfly 4 is the cheapest electric mountain bike made by Trek. This doesn’t take away from its great components and rideability, though. It’s an eMTB designed for lighter trail riding with its larger wheels that smooth out the bumps on the rough spots. Relatively light yet powerful, the Trek Powerfly 4 Gen 4 is an ideal electric mountain bike that doesn’t break the bank.

Ideal for...

E-bike overview.

The Bosch Performance CX motor gives a real kick with up to 85Nm of torque, meaning that you can pull away on a steep and muddy hill with confidence. Power delivery is smooth so you won’t spin the rear wheel should you push too hard. The Bosch smart system offers enhanced ride control with navigation and activity tracking via the eBike Flow app.

Packaged with the Bosch Performance CX motor, is their Walk Assist mode that helps push your e-bike up those tough hills you’re bound to encouter. The LED remote let’s you enable Walk Assist and control the level of pedal assist you need. The LED lights are bright and easy to see, even in bright sunlight.

One thing that Trek does with this electric bike is fit different equipment to different-sized machines. For example, on the XS and S framed machines, it has a 27.5” wheel size, while on the M, L, and XL sizes have a 29″ wheel. The frame on the smaller e-bikes are also slightly different, offering a curved top tub for sizes XS and S, while frame sizes M, L, and XL have a straight top tube.

Trek has thought about everything, not surprisingly. Rack and kickstand mounts are readily avilable, as well as an integrated speed sensor for those riders looking to use the PowerFly 4 as more of a trekker than a day-rider trail e-bike.

Reasons to Buy

If you want an electric bike but don’t want to empty your bank account, the Trek Powerfly 4 Gen 4 is a very good machine to consider. At the lower end of the premium spectrum, the Trek Powerfly 4 will be worth every penny when it comes to an electric mountian bike that will look after you on the road or trail.

Designed not to embarrass you on the trail, it works well on longer cross-country rides. Its battery will be good for a 35-mile ride on tougher terrain, and the power of the Bosch Performance CX motor will leave you breaking a sweat only if you’re going easy on the battery.

When it comes to speed control, the electric bike won’t let you down even on steep tracks in wet conditions with its Tektro hydraulic brakes, and on 203mm rotors, they won’t fade even if used a lot.

Things to Consider

If you want a genuinely inexpensive electric mountain bike, there are others like the Rad Power brand of electric bikes, but few pack as many high performance components as the Trek Powerfly 4 Gen 4. This isn’t the cheapest eMTB out there, but it is very inexpensive for a high-end machine.

Specs & Components

The specs above come from the manufacturer and may vary from what you’ve experienced. Notice something that needs correcting? Let us know .

Offering up to 85 Nm of torque, the light but punchy Bosch Performance CX motor delivers the power you need for riding off-road, including rapid direction changes and tackling steep climbs as you journey around the woods or mountain.

Its Bontrager XR3 Comp tires won’t go quickly on hard, flat surfaces due to higher rolling resistance, but this isn’t what the Powerfly 4 is about — it’s about fun in the mud and on loose surfaces. As such, the motor won’t achieve great flat-out speeds, but it’ll more than make up for it in raw power over the rough stuff.

The 500 Wh battery on the Powerfly 4 will give you a good day out on singletrack and a reasonably long day in the saddle on an off-road adventure. However, there’s no option for a range extender, so if you’re looking for more than 35 miles per charge, choose an eMTB with a range extender or a 625+ Wh battery.

Leaving your gear at a base while doing singletrack will give you more range, but if you’re carrying your pack on an adventure, this will eat into your mileage. Muddy terrain and foul weather can impact range, too.

Sat in a trekking position, you’ll use your upper body to shift your weight according to riding conditions. This could mean you get tired in your arms, chest, and shoulders after a long ride.

Sizes XS and S in the Trek Powerfly 4 range come with 27.5” wheels, while sizes M, L, and XL come with 29” wheels. Either way, they’ll smooth out the rough terrain.

The XS version of this eMTB hardtail electric bike comes with an 80mm travel SR Suntour fork, while all larger sizes have a 120mm travel fork. Both are well-suited to rough terrain.

Though Trek offers a lifetime warranty on the frame, if you haven’t looked after this e-bike, the warranty may be voided.

Clean the bike and oil its working parts after every ride. Keep an eye on chain stretch — change it when it gets to 1 mm per link, and look out for bent/broken teeth on the cassette and front chain wheel. Also, keep an eye on brake pads and hydraulic fluid. Though the Powerfly 4 is waterproof to an extent, take care when it comes to river crossings, as it isn’t designed for complete immersion!

Being a serious electric mountain bike, the Trek Powerfly 4 also looks the part. The clean lines and nice shapes of the frame along with its overall geometry combine to make for a good-looking eMTB.

The choice of colors is good too, from the loud red and black scheme to the muted gray and black. Overall, this bike looks like it means business when thrown about the tracks and trails.

We personally research and test every e-bike featured in our reviews and guides to provide accurate, data-driven recommendations. Learn how we review.

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Summary of Reviews

We have read all expert and user reviews on the Trek Powerfly . In summary, this is what cyclists think.

15 reasons to buy

  • Owners reported an impressive range of up to 80mi and 7000ft of elevation.
  • A 71yo owner easily handled a daily climb of 500ft, on a 25% grade driveway.
  • A desert resident said the Powerfly rode easily, through soft sand.
  • Tektro hydraulic brakes were deemed responsive and “pulled hard”.
  • The 5’s fit and finish was described as “beautiful and rugged”.
  • ‘Touring’ mode was great on roads, while ‘eMTB’ mode was excellent in the woods.
  • A removable battery made it easy to mount the powerfly on vehicle racks.
  • Powerfly drivetrains pedaled smoothly on the flats, despite the bike’s weight.
  • The Bosch Performance CX motor exhibited plenty of torque on climbs.
  • One owner cooed over the Powerfly 4’s metallic red paintwork.
  • The Powerfly 7’s TransX dropper-post made mounting and dismounting easy.
  • Overweight riders found the Powerfly’s carrying capacity to be more than ample.
  • One reviewer found that the Powerfly 4’s 100mm of fork-travel covered needs.
  • Shifting, range and gear spacing were lauded on the Powerfly 5’s drivetrain.
  • Some reviewers felt that the weight of the bike aided stability.

7 reasons not to buy

  • The Powerfly was heavy, and onerous to pedal up hills without assistance.
  • Some owners would have liked to be able to easily add a second battery.
  • The Powerfly’s high-level component spec made it a pricey option.
  • Some owners felt that the Powerfly’s paintwork was easily chipped.
  • One daily user reported delayed engagement of the power assist in snowy areas.
  • Schwalbe Smart Sam tires punctured easily, on the ‘Sport 4 Equipped’.
  • Some owners sought a way to lock the motor without removing the battery.

Bottom line

Expert reviews, trek powerfly 5.

The Trek battery holds a good charge… I reckon there’s enough power to last 60 to 80 miles if you’re careful.

Trek Powerfly 4 on Exmoor Review

…outstanding fun with steep descents and river crossings followed by challenging climbs which the Powerfly managed with such ease! …I was surprised at the sub-20-mile range I achieved on this test-ride…

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Trek Powerfly 5 Review

trek powerfly 5 review

When you purchase through links on our website, we may earn a commission. Affiliate disclosure.

When it comes to hardtail electric mountain bikes there’s an awful lot of choice (if they’re in stock) from the big-name manufacturers. When one of my friends called me last week to say he’d brought a Trek, I was eager to try it out. In this Trek Powerfly 5 review, I will take a closer look at the specifications and share with you my opinions after spending a couple of hours with it on Bodmin Moor .

trek powerfly 5 review

Introduction

Trek’s mountain bike heritage goes back to 1983 when they released the 850 – fast forward 28 years and they have a comprehensive range of high-end e-MTBs ranging in price from just over £2500 to up to an eye-watering £11500.

At £3750 the Trek Powerfly 5 sits at the upper end of their hardtail range and benefits from the latest Bosch Performance Line CX motor with a 625Wh battery. The Powerfly 5 also boasts Rockshox forks and SRAM Eagle SX 12-speed drivetrain.

trek powerfly 5

My friend had been talking about upgrading his Cube Acid hardtail e-MTB for some time and we’d previously discussed the merits of the Trek. He recently took the plunge and purchased the bike reviewed here.

First impressions

The first thing that struck me about the Trek Powerfly 5 was how stunning the paintwork finish is – it’s a gorgeous bike in the ‘slate/volt’ colour scheme. Mind you, you’d expect nothing short of this on an e-bike costing more than a decent second-hand car!

trek powerfly 5 pictured on bodmin mor

Although the 17″ frame was a bit on the short side for me, with the seat post properly adjusted it felt quite comfortable. My friend paid an extra £200 to have the optional Bontrager dropper seat post fitted, which is a must if you’re going to be tackling the trails.

Riding some rock-strewn single track the Trek feels sure-footed. For an older rider like me, the Powerfly 5 inspires confidence (maybe a bit too much) and is great fun to ride. Where this e-bike comes into its own is when the trail turns upwards – it’s not the first Bosch CX I’ve experienced but this motor never fails to impress me with its 85Nm of torque. Riding up steep tracks is helped even further by the trail-busting SRAM Eagle 11-50 12-speed rear cassette, meaning you never run out of gears.

trek powerfly 5 electric mountain bike

Although my ride was fairly brief I was thoroughly impressed with the off-road abilities of the Trek, it’s a great all-around package suitable for beginners, intermediate or the older more experienced cyclist who’s returning to mountain biking after a long break. Below I will go into more detail on the components.

Check out the 2023 Powerfly 5 from Trek

Electric components

The high-end mountain bike world is dominated by either the Bosch CX or Shimano Steps E8000 / EP8 of Brose motors. It’s good that manufacturers recognised the demand for a greater battery range and the Trek Powerfly 5 comes with the Bosch 625Wh power tube battery which is neatly integrated into the frame.

Bosch Performance Line CX

bosch performance line cx motor as fitted to the kona electric ute

The Bosch Performance Line CX motor benefits from several upgrades over the previous model, most notably the 85Nm torque output offering the rider up to 340% assistance.

There’s the new Extended Boost mode which makes negotiating rocks and exposed roots on the trail much easier, particularly uphill. This means the bike can be manoeuvred with greater agility on technical sections.

bosch performance line cx motor

Revised e-MTB mode – This ensures the rider is well-prepared for whatever situation the trail has in store. New sensor and motor control functions give mountain bikers a much wider range of dynamic and natural support.

The Bosch motor is smooth and the whine from the motor is quiet and not intrusive. Performance is as good as you will find on a road-legal e-MTB and it adds a whole new dimension of fun when riding off-road.

625Wh Powertube battery

bosch powertube 625 battery

I first rode an e-bike with a 625Wh battery at the end of 2019 and having the extra capacity will ensure riders can spend more time enjoying the trails. The range will depend on lots of different variables but 50 miles should be achievable when riding off-road – check out the Bosch range calculator for a rough estimate of battery range from the 625Wh battery.

Bike components

Quality components are a must on electric mountain bikes at this price point and the Trek Powerfly 5 doesn’t disappoint. I have gone into more detail on the specification below.

trek powerfly 5 with sram 12 speed gearing

The gearing is comprised of an SRAM Eagle single-click 12-speed shifter with an NX Eagle rear derailleur and 11-50 cassette – as the Bosch uses an ISIS-type crank interface, an SRAM X1 crankset is fitted. The drivetrain is finished off with a high-quality SRAM SX Eagle chain.

electric mountain bike trek powerfly

Braking is provided by the excellent Shimano MT-420 4-pot calipers with 203mm brake rotors – as expected these brakes work well and will provide more than enough stopping power for most riders. I found them to be excellent, and you only need to use one finger for braking.

If found the 120mm Rockshox Recon RL suspension forks worked very well indeed. Although they are at the lower end of Rockshox forks they feature trickle-down technology from more expensive forks and feature Motion Control™ damping which features low-speed compression adjustment to lockout.

Wheels and tyres

The wheelset is a disc-specific Bontrager Kovee Comp 23 with Boost 110, 15 mm thru axle at the front and a Boost 148, 12 mm thru axle at the rear. Tyres are Bontrager XR3 Comp, wire bead, 30 tpi, 29×2.30″ which seemed to handle the damp moorland trails very well. If you wish to upgrade to a tubeless set-up these wheels are tubeless-ready. The hub is a standard 9/10 speed Shimano freehub.

Frame and finishing kit

electric mountain bike trek powerfly

For the frame Trek use their Alpha Platinum Aluminium which is their premium lightweight aluminium designed for maximum strength and minimum weight. As I’ve mentioned above the finish is exquisite and looks incredibly hard to wear.  The frame also benefits from internal routing for lights (should you choose to fit them) and a direct kickstand mount.

All of the finishing kits are all by Trek’s in-house brand Bontrager which is of excellent quality. This bike also had the optional Bontrager Line Dropper seat post fitted which costs an additional £199.99.

If I was in the market for a capable hardtail electric mountain bike I’d be very tempted by the Trek Powerfly 5. It’s great fun to ride and feels very capable on a rough single track – the handling inspires confidence and that Bosch motor is the icing on the cake!

There are cheaper options available and if you’re new to electric mountain biking you may not want to spend quite so much on your first purchase.

trek powerfly 5 white

Having said that, if I had the money to spend on a nice hardtail e-MTB the Trek would certainly be on my shortlist. Other plus points are the excellent brakes, SRAM 1 x 12 gearing and the 625Wh battery.

My friend has brought this e-bike with the intention of keeping it for a good few years and I’ll post any relevant updates here.

Thanks for reading and if you have any questions or comments please leave them below.

electric mountain bike trek powerfly

Meet Tony, a passionate e-bike advocate and enthusiast who discovered the life-changing benefits of electric bikes back in 2016. Tony’s technical experience within the e-bike field was gained while running a successful electric bike conversion business for 5 years in his home county of Cornwall, UK.

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Thanks for the review, even though I discovered this after buying my Powerfly 5, I still found it useful and relatable. I picked mine up in November and have given it a good testing over the winter months – what a brilliant bike! Even though I could have spent less for a Cube reaction, which I almost did. I’m glad I spent more on this. The only issues I have encountered are tyre pressures since going tubeless, but I think that’s more the tape inside rather than the rims thenself.

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Trek Powerfly 7 LT Review

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Trek Powerfly 7 Lt Electric Bike Review

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  • A stealthy, long travel, all-mountain electric bike with longer wheel base and adjustable seat stay hardware to optimize geometry for climbing and descending, proprietary "Active Braking Pivot" rear suspension reduces skipping, Knock Block headset and Hartzell Hug impact-absorbing downtube bumpers allow for straight downtube
  • Trek-invented Boost hub spacing improves spoke bracing angle and support for larger plus sized tires, quick release thru axles are sturdy and easy to work with, direct-link rear suspension stiffens the chain stays and bottom bracket without compromising performance thanks to the DeonAir rear shock
  • Beautiful battery integration, Bosch PowerTube 500 disappears into the frame, keeps weight low and center, provides space for a bottle cage mount and accessories above, sturdy locking core from ABUS with keyed-alike code, battery has a built-in handle for secure removal and transport
  • Bosch Purion display does not have an active Micro-USB port, the PowerTube 500 is heavier than the older PowerPack design, longer wheel base isn't as nimble and the motor integration is flat vs. angled up (unless you get the carbon model), the motor is heavier than the competition, produces more noise, introduces some drag when unpowered

Video Review

Introduction

Body position:, suggested use:, electric bike class:, learn more about ebike classes, availability:, model year:, bicycle details, total weight:, battery weight:, motor weight:, frame material:, frame sizes:, geometry measurements:, frame types:, frame colors:, frame fork details:, frame rear details:, attachment points:, gearing details:, shifter details:, brake details:, seat post length:, seat post diameter:, tire brand:, wheel sizes:, tire details:, tube details:, accessories:, electronic details, motor brand:, motor type:, learn more about ebike motors, motor nominal output:, motor peak output:, motor torque:, battery voltage:, battery amp hours:, battery watt hours:, battery chemistry:, charge time:, estimated min range:, estimated max range:, display type:, display accessories:, drive mode:, written review.

EBR charges a service fee to manufacturers to produce ebike reviews and videos, this began in 2018. It’s the same flat fee for each bike, and it helps us to keep the site going while limiting ad clutter. We appreciate the opportunity to serve you with our opinions and data but respect your right to know that we receive compensation :)

The Trek Powerfly electric mountain bike models have been completely redesigned and updated for 2019, and EBR was invited to attend a launch event at Mammoth Mountain resort in California to check them out for this review. I brought my friend Brandy, who is a beginner mountain biker, and we spent the day hearing about updates and then going for rides (up and down the lower sections of the mountain). Mammoth sits at roughly 11,000 feet (3,352 meters) elevation above sea level, and there was a small forest fire burning nearby during our visit… so it was awesome to have electric assist, to make it easier to breathe. Summertime is beautiful in the Inyo National Forest, Mammoth is a lava dome volcano and the terrain is really unique and varied (featuring soft volcanic pumice in some areas and steep jagged rock in others). We got to interview one of the Mammoth staff and learn about the resort’s rich history of innovation… and there was a little celebration happening because the mountain has become one of the first in the US to officially allow Class 1 electric bicycles on national forest land. Anyway, it was pretty warm in the afternoons and I’m certain that we couldn’t have ridden as far or stayed as cool and comfortable on traditional mountain bikes. It certainly wouldn’t have been as much fun for the two of us to ride at a similar pace together. I’d consider myself an intermediate mountain biker, but I have an injured left knee and have become a big fan of e-bikes as a way to keep up with advanced riders and just go further.

All of the Powerfly electric bike models from from Trek share the same Bosch PowerTube 500 battery and Performance Line CX motor. They range from affordable hardtail models called the Powerfly 5 and Powerfly 5 Women’s (which has a slightly lower, sloped top tube), up to the Powerfly 5 FS (full suspension), the Powerfly 7 FS, the Powerfly 7 LT (long travel) which was the focus of this review, and the Powerfly 9.7 LT (a carbon fiber long travel version). If I were purchasing one of these models for myself, I’d probably go with the 7 FS because I don’t need the longer travel suspension for aggressive downhill riding and prefer the all-black color scheme on that model, which hides the black motor casing. If money were no object, the Powerfly 9.7 LT would be nice because Trek was able to tilt the motor a bit for a nicer looking integration and carbon fiber tends to reduce jitter and weigh a bit less. The 7 LT came in around 52.3 lbs (23.7 kg) which is about average for bigger suspension, thru axles, plus sized tires, and the PowerTube 500 battery (which weighs more than the older external PowerPack plastic batteries). In recent years, I discovered that Trek created the wider Boost axle and bottom bracket standard. This allows for a stronger spoke bracing angle which supports plus sized tires (2.6″ to 3.0″ width). You can see that on these bikes, and I was told that the Q Factor is 190 mm and that the frame was made a bit long to help keep the front wheel down on steep descents. Despite this, I managed to lift the front wheel on a couple of occasions during our ride test. Trek has another innovation in store for people who are willing to spend some time unscrewing bolts… the seat stays can be made slightly longer or shorter by flipping this washer called a Mino Link which changes the fork angle by about one percent. I haven’t seen this on any other electric mountain bikes. Same goes for the Lock Block headset, designed to stop the crown from bashing into the downtube in the event of a crash. Other frames utilize curved downtubes that aren’t as stiff. The rear suspension design uses a rocker link and vertical shock position to keep as much weight directly below the rider (at the center of the frame) as possible. Older Trek models had a floating pivot design but I was told that they have moved towards direct frame mount in an effort to stiffen the chain stays and bottom bracket. The rear wheel mounts to a pivot point and benefits from an Active Braking Pivot (ABP) design meant to isolate suspension movement from braking, to keep your rear wheel in contact with the ground and reduce stiffening and brake squat. Lots of fancy proprietary engineering happening here. As a more casual rider, I was drawn to the clean internally routed cables, tight motor casing with clever molded chain guide and alloy skid plate (with bottle opener), double-sided slap guard and chain suck protector wedge, and powerful 203 mm hydraulic disc brakes with quad piston calipers. As someone who frequently rides with just one hand on the bar (because I’m filming), it’s nice to have good brakes. For whatever reason, the brakes were squeaking a bit during my rides, and that could be due to some hand oils on the rotors from transport, assembly, and demos. It was great to work with the Trek team to be fit to the frame properly and then have the suspension sagged to my body weight. Both air shocks have black anodized coatings to minimize stiction, offer rebound, and compression adjust… they felt great. With five frame sizes available for each of the Powerfly models coming to the US, and a vast network of dealers, you’ll be able to find a great fit and get set up properly like we were.

Driving the bike is a planetary geared mid-motor that’s rated 250 watts nominal and 600 watts peak. Depending on the market you’re in, the top speed may be 32 km/h (20 mph) or 25 km/h (15.5 mph) to comply with local regulations. It’s a Class 1 product, meaning that it utilizes pedal assist only and is allowed on the widest number of trails (including at Mammoth). With a peak torque rating of 75 Newton meters, it’s one of the most powerful centerdrive electric bike drive systems on the market, but it’s also one of the loudest. If you’re riding on gravel trails or through the woods, the high pitched motor sound is mostly masked by tire contact. What’s so impressive about this system is that it responds to rear wheel speed, pedal cadence, and pedal torque over 1,000 times per second and incorporates software driven shift detection. Bosch is well known for their motor controller system and the Performance Line CX motor offers an eMTB mode that was developed in tandem with professional mountain bike riders. The motor itself weighs a bit more than some of the competition at roughly 8.8 lbs. There’s definitely room for improvement here, but Bosch has earned a reputation for quality and reliability. They were one of the first big companies to enter the US with brands like Haibike and have faithfully served the North American market longer than Brose, Shimano, Yamaha, and most others. What you trade in millimeters and grams is made back through reliability and leading performance. Perhaps my favorite part about this motor, and a feature that is especially relevant to electric mountain biking applications, is the higher pedal RPM support. Basically, you can pedal fast in a high gear and the motor will continue supporting you at up to 120 pedal strokes per minute. I tried to demonstrate this in the video review above… Some other motor systems cut out at 100, 110, or begin to fade near 120. This motor can handle steep climbs but also supports faster spinning on cross country sections. It empowers you as a rider vs. forcing you to adapt to electric assist. I also appreciate the walk mode feature that was working on the latest batch of Powerfly ebikes. This is a feature that most earlier (pre-2018) Trek models had disabled, but it comes in very handy for those moments when the terrain is too difficult to ascend or you’ve got a flat. The 11-speed Shimano Deore XT drivetrain empowers the Bosch mid-drive to climb and can easily pedal the bike beyond the top assisted speed. You’ve got an 11-46 tooth cassette and a proprietary 15-tooth (38 tooth equivalent) chainring to work with. The motor utilizes a reduction gearing system to spin the 15 tooth cog 2.5 times per single crank revolution and this causes a bit of mechanical drag that eats into efficiency when the bike is unpowered or pedaled beyond the top assisted speed. Some benefits might be faster starts and stops along with excellent chain retention… but the chain is also positioned very near the chain stay, so there’s more contact happening as you ride over bumps. Thankfully, the Deore XT derailleur does come with a one-way clutch system, a little grey lever that can be clicked into the up position to tighten the derailleur spring and reduce bounce. Position it in the forward position for easier wheel maintenance.

One of the most exciting new design features that Trek has introduced for their 2019 mountain models is the Bosch PowerTube 500 battery integration. In the past, Trek has done a great job of matching and smoothing the external plastic PowerPack battery… insetting the packs and even using plastic covers for protection and aesthetic enhancement, but it still stuck up above the downtube and stood out. It limited space for adding bottle cage bosses and other accessories in the main triangle of the frame. The PowerTube, by contrast, is completely hidden inside the downtube and it stays out of the way completely. The battery bay is wide open when the pack is removed and this actually makes it easier for shops to adjust shifter, brake, electrical, and seat post dropper cables. The battery pack is encased in an aluminum alloy shell and has a second layer of alloy protective covering screwed onto the right side, painted to match the downtube design of each specific model. We were told that the shield does not add to the structural integrity of the frame (and for the carbon fiber 9.7 model it is still aluminum alloy) so it definitely adds some weight. In addition to the shield, there’s also a plastic top cap with flip-up handle. This is a welcome feature because it makes removing and transporting the $900+ battery much easier and safer. You first have to unlock the pack from the left side of the frame and then it pops out about halfway before you can press a lever on top (where the handle is) and pull it the rest of the way out. This two-step approach is also very nice for safety, but it only works on the way out… When you’re mounting the pack, you actually have to insert the key and twist it on the left side of the frame while trying to balance and push the battery pack from the right. I wish the halfway step did not require a key so that the process of balancing everything could be less precarious. I asked about this and was told that Trek wanted to make the locking mechanism secure and reduce rattling, so this is why the key must be turned. Anyway, I do appreciate the thought that went into putting the battery door on the left side of the frame vs. the bottom (where the pack could drop out easier on removal due to gravity), the top (where the pack could collide with the top tube from below), or the right (which would encourage riders to lay their bikes down on the more delicate drivetrain side). But still, the key port is on the left, so if you do lay the bike down it could be a challenge to reach under and twist. The charging port is also on the left side of the frame, directly in the path of the left crank arm. The Bosch plug interface is a wider proprietary design that seems sturdy, but it’s still worth being careful not to snag. There’s a little plastic door protecting the charging port and this is a nice upgrade from the stand-alone rubber plugs I see on some other models that could get lost when they don’t have leashes. I do recommend being delicate and thoughtful when laying the bike down on the left side because the larger 203 mm disc brake rotors could get bent easily (especially in off-road environments with sticks and rocks strewn about). Amazingly, the left chain stay has a 20 mm threaded tab for adding a kickstand! So, if you’re buying an all mountain electric bike and want to ride it around with a jittering stand, you can do that! Or, you could ride it around an urban environment and take on curbs, grassy hills, and pretty much anything else, and still stand it up straight in your garage and at the bike rack. Nice one, Trek :D Just like the older Powerpack batteries, the new PowerTube can be charged on or off the frame, and Bosch continues to lead with their compact, lightweight, faster 4-amp charger. I’d definitely remove the ~7.4 lb battery before lifting the bike for service or mounting it to my car rack. The battery has a little LED indicator on the base (where you plug it in) that communicates a rough estimate of fill level. To maximize lifespan, keep the battery charged over 20% as frequently as possible and avoid extreme heat and cold. The PowerTube is longer than the older PowerPack, it’s less universal because of the proprietary covering that each company is making for themselves, and it’s less available to travelers (or between bikes in the same family due to the covers). Sure, you could borrow a different colored battery for a long trip if you and a friend both have Trek ebikes, but imagine trying to stick this thing into a backpack or pannier bag. It’s just not as compact or convenient as the PowerPack… So I kind of miss that from the older Powerfly models, which still looked great. The 36 volt 13.4 amp hour size is about average for this generation of ebikes, and the lithium-ion cells are above average in terms of quality and warranty support. I really like and trust Bosch, but compared to the custom 36 volt 17.5 amp hour packs for some Brose powered ebikes that actually weigh less, it leaves something to be desired.

Activating the electric systems on this bike is fairly straightforward. You charge and mount the battery then press the power button on the top edge of the little display panel, which is mounted within reach of the left grip. This is the Bosch Purion display panel , one of the nicer compact offerings on the market right now. It cannot be swiveled to reduce glare easily, is not removable for protection, does not show as many menus (missing Clock, Max Speed, Average Speed, Trip Time, Shift Recommendation), and does not have an active Micro-USB charging port like the larger Bosch Intuvia display . However, it keeps the handlebars clean and may not get damaged as easily in the event of a tip. This is a very popular display panel for electric mountain bikes, which often strive to go “below the radar” and limit fancy accessories that could get broken or attract unwanted attention. I have grown to accept it but have a few tips for use… the + and – button pads that raise or lower power for assistance click in at an angle towards the right. They are attached near the left edge of the control pad and pivot in towards the LCD. The right edge is their sweet spot, sometimes even the middle can be difficult to click in or just inconsistent. The screen itself glows faintly in white at all times, which shouldn’t draw much power, and is handy when it’s early morning or later at night and you need to read it. Once you get the hang of things, you really don’t have to look down at all because you can notice the clicks of the button pad and feel the boost in power. Furthermore, if you set the drive mode to eMTB (which is third up from the bottom: Eco, Tour, eMTB, Turbo), you might not want to click at all because the mode is so dynamic and good. Holding the + button will turn a lights icon on and off but since the Powerfly models don’t come with lights (at least not in the USA), this doesn’t really do anything. Some dealers may be able to wire in lights for you at an extra charge, and this could be really cool for people who enjoy moonlight rides and want to take advantage of the high capacity battery onboard. Holding the – button will cycle through trip distance, odometer, assist level, and range. This range section is dynamic, so you can see the bike calculate how far it thinks you can go based on the last mile of riding, your current state of charge, and the chosen level of assist. On the lower edge of the control pad, mirroring the power button, is a walk-mode button. When you’re in any of the four levels of assist (not Off) press walk-mode once and then hold the + button to have the motor slowly assist you when walking the bike, as mentioned earlier.

This review video and writeup was longer than normal because I wanted to provide some guidance for the entire lineup. Trek is a leader in the cycling space, one of the top three manufacturers globally (Trek, Giant, Specialized), and their electric bicycles are some of my favorites. Trek didn’t pay me to say that and I didn’t get paid for this review… but they did provide a really cool experience for my friend and me. The past six years of my life have been dedicated to electric bikes, ever since I got a knee injury and wanted to keep commuting to work daily. My preference is full suspension mountain bikes because I also have neck and back injuries… and I love the new plus sized tires that provide increased float, traction, comfort, and reduce deflection on big rocks. It’s neat to see a few different levels of bikes, a women’s specific model with slightly lower standover height, and the carbon frame option. I was riding the 17.5″ frame and probably would have been better off on the 18.5″ because I’ve got such long legs. The Trek rep named Ross told me that they were targeting more options for the mainstream “middle of the bell curve” and that makes a lot of sense. It’s nice to have a dropper post, fully adjustable suspension, and a frame that is well-balanced front to back. the drive systems are positioned well and perform incredibly, but do produce some extra noise compared to some competitors. For those who are new to the 650B tire size utilized here, it provides the rolling momentum and lower attack angle of 29ers with increased width for traction. It makes perfect sense for an electric bike because the added weight and drag of the tires are offset by the highly efficient motor. The Bontrager tires that come with this model have reinforced sidewalls to handle lower pressure (increased tire flex) and the tires and rims come tubeless-ready for easy conversion. You’ll get less pinch flats, save ~200 grams total, and get fewer flats because of the self-sealing nature of tubeless sealant. As always, I welcome questions and feedback in the comments below, I’ll do my best to answer, and you can connect directly with other owners and enthusiasts in the Trek electric bike forums .

  • The Powerfly line of electric bikes from Trek all share the same battery and motor integration, this keeps costs lower and makes fixes easier, I was amazed that all six of the models being introduced to the North American market for 2019 (Powerfly 5, Powerfly 5 Women’s, Powerfly 7 FS, Powerfly 7 LT, Powerfly 9.7 LT Carbon Fiber) come in five frame sizes! This ensures optimal fit
  • There are actually two “medium” frame sizes to choose from, I rode the 17.5″ but would have preferred the 18.5″ which is slightly larger (since I have longer legs), Trek really focused on the “fat part of the bell curve” with their sizes to serve most common use cases well by having two mediums
  • Trek only sells through dealers at this point, and this strategy allows them to provide the best quality control, assembly, and fitting… but they are also one of the three largest bicycle brands in the world, so their prices aren’t as high as some competitors, it’s the best of both worlds
  • The motor is protected from rock and log strikes by a long alloy skid plate, it’s vented to improve cooling and the large vent hole in the center is shaped into a bottle opener… which is fun, I really appreciate the plastic casing design on the right side of the motor as well, this doubles as a chain protector and guide, it’s even designed to help clear mud and prevent chain suck
  • Excellent use of slap guards, there’s a long rubber strip on the top and bottom portions of the right chain stay, this will keep the paint job in tact and reduce noise on rough sections of trail
  • The smaller Bosch chainring makes chain slap more common than with a standard sized chainring but the Shimano Deore XT derailleur minimizes this when you click the one-way clutch into the up position, tightening the springs to reduce chain bounce
  • Overall nice aesthetic, the paint job isn’t super busy and Trek has matched the black rims, seat post dropper, and suspension elements (including black stanchions) to the black paint accents… this is the case on all 2019 Powerfly models, I like the 7 FS best because the black motor blends with the black frame color
  • Sturdy thru-axles, Boost hub spacing, thicker 35 mm fork stanchions, a high-volume rear suspension, and frame-mounted rear suspension interface (compared to their older floating pivot) increase frame stiffness, handling, and efficiency of power transfer
  • Air suspension tends to be lighter, more adjustable, and these RockShox components have hard anodized stanchions to reduce stiction and perform better on smaller bumps, I appreciate the the proprietary rear pivot ABP design
  • The Bontrager XR4 tires are designed to be lightweight but still have reinforced sidewalls to be durable when running at low tire pressure if you decide to go tubeless, they ship tubeless ready with strips and valves included for easy conversion and that’s what the Trek reps recommended to me… I was told that plus sized tubes can run 100 grams a piece and tend to go flat more easily when running with low pressure, so it’s decent weight savings but most importantly helps you reduce pinch flats and reduce maintenance effort
  • The headset uses Knock Block to prevent oversteer and subsequent frame damage, even if you really crash hard and break the chips inside the Knock Block, the downtube has rubberized strike points for further protection
  • Internally routed cables look great and stay out of the way but are still easy to service because of the wide opening for the PowerTube battery pack
  • Internally mounted battery pack keeps weight low and centered on the frame, it stays protected inside an alloy (or carbon fiber) tubing structure with an alloy cover, Trek really thought things through and chose a right-side mount because it’s best to lay bikes down on their left side (to protect the drivetrain)
  • Another benefit to the PowerTube battery, with attached plate and handle here, is that you don’t have to worry about someone stealing/tampering with a non-locking plastic cover when the bike is at a rack, and there are just fewer parts to keep track of when you do remove the pack from the bike
  • One of the trade-offs with the Bosch PowerTube battery is that it does not come stock with a handle… Trek designed their own interface with two-step click (so it won’t flop out when you unlock it) and added a handle for secure and safe transport
  • Plenty of space below the top tube, in front of the seat tube, and on top of the downtube to mount accessories… Trek even included bottle cage bosses for all of the Powerfly models!
  • Excellent drivetrain, you get an extra wide 11-46 tooth cassette to handle All Mountain terrain… everything from climbing to descending with speed, I appreciate the durability and weight savings of a 1x drivetrain like this
  • Extra large 203 mm disc brake rotors with larger quad-piston calipers provide stopping leverage and improved cooling for those fast, long descents… sometimes I’ll see 203 front with 180 mm rear but considering the semi-downhill performance of this suspension setup and heavier ebike build (52.3 lbs total here) it’s a great hardware upgrade
  • Very nice 130 mm seat post dropper with internal cable routing, thicker 31.6 mm seat post sizing makes this part easy to swap out or upgrade
  • Trek really dialed in their rear suspension for the new line of Powerfly e-bikes, the Active Braking Pivot (ABP) rear link reduces lockup and skipping so the rear wheel can stay on the ground, the Rocker Link piece positions component mass (including the rear shock) directly below the rider for better handling, they optimized the leverage rate between the rear wheel and rear shock to provide excellent mid-stroke control for less bobbing, more stable cornering, and and better acceleration
  • Both seat stays have this “flip chip” adjustable washer called the Mino Link that allows you to change the frame geometry on the fly, when the link is extending the stays it provides quick performance for cross country quick-handling use but when you shorten the stays it slackens the head tube angle by about 1° for stable downhill riding, positioning the suspension fork to take hits more directly
  • The Bosch CX motor controller is extremely smart and consistent, it measures rear wheel speed, pedal cadence, and pedal torque over 1,000 per second while also listening for pressure changes from shifting and then easing off, this protects the drivetrain a bit from mashing
  • ABUS makes the locking core that secures the battery cover, it comes with a code for ordering additional keys or getting keyed-alike accessories such as folding locks
  • I was delighted to discover that the bike has provisions for mounting a kickstand on the left chain stay! I think it’s a 20 mm spacing with two bolts and Trek / Bontrager hardware would be compatible
  • The bike comes stock with the faster 4-amp Bosch charger that lets you spend more time riding and less time waiting, the Trek rep Travis told me that electric mountain riders tend to drain batteries faster because of all the climbing, etc. so it’s nice that the charger is also lightweight at ~1.7 lbs and very compact, the Bosch charger is one of my favorites
  • The display is compact, it won’t get damaged as easily in the event of a crash but is still fairly readable with large readouts, for such a stealthy electric bike with integrated battery, the Purion display matches the understated look
  • Trek is now enabling walk mode on their electric bikes! This is especially useful if you encounter a technical bit of trail that you aren’t comfortable riding or maybe you get a flat tire, considering that the bike weighs ~52 lbs, it’s nice to get help moving it
  • I really like the eMTB drive mode, it was designed by Bosch with help from professional mountain bikers who dialed it in so the power isn’t overwhelming but also doesn’t let you down… it’s a great “all around” assist level to use so you can focus on shifting gears, it’s especially nice to have with the Bosch Purion display panel because I have found that the buttons aren’t as consistent (press near the right edge, near the LCD display, because they pivot in vs. going straight down)
  • Another feature of the Bosch Performance Line motors that I really appreciate is how they can support higher pedal rates without fading out, you can reach 120 RPM (pedal strokes per minute) and the motor is still there for you, this means you don’t have to shift gears as frequently if you prefer to spin instead
  • The quick release wheels and removable battery pack make this an easy bike to lift, transport, service on the trail, and park securely
  • Trek invented Boost technology for wider, stiffer axles to support 29er wheels and now the 27.5″ plus sized tire setup with a wider bracing angle on the spokes, I love the knock-block stem, headset top cap, spacers and frame chip and rubber hartzell hug impact-absorbing downtube bumper backup protection system (to prevent oversteer into the straight shot downtube which could damage the fork and frame), by making the downtube straight they reduced the strength to weight ratio and improved stiffness
  • Excellent two year warranty covers everything on the bike, including the motor, battery and display system, and with a vast network of dealers out there, it requires less effort to get help
  • I appreciate the aesthetic that some ebike companies have been able to achieve by tilting the Bosch CX motor up and melding it into the frame, you can see this with the BULLS SIX50 EVO AM 4 and even Trek’s own Powerfly 9.7 LT Carbon which both use the Bosch PowerTube 500
  • As nice as the battery cover looks, and as useful as the handle mechanism at the top of the pack is, this battery pack weighs significantly more than the same-capacity PowerPack 500 which mounted on top of the downtube (as seen with this 2017 Trek Powerfly 8 FS model), the benefits of the PowerTube are lower weight position, nicer look, ability to mount bottle cage and other accessories in main triangle
  • The Bosch Performance Line motors are heavier and larger than the Brose S, Shimano E8000, and Yamaha PW-X while also having a wider minimum Q-Factor, but that’s less of an issue on this Boost frame because it’s setup with a 190 mm Q-Factor to reduce shoe strikes on the stays
  • The motor produces more noise than some competing products and uses a reduction gearing system to spin the proprietary chainring 2.5x for each crank revolution, this introduces a bit of drag when pedaling unassisted or beyond the 20 mph top speed
  • Minor complaint here, in order to mount the battery pack into the downtube bay, you actually have to insert and twist the key, you can’t just slam it in and have it click into place like some competing designs… this makes it sturdier and probably reduces rattling but also requires more time and energy to do, to go even further with this complaint, I wish that the first half-step could initiate without having to insert the key, just to keep the pack from tipping out if your hands are full and you’re struggling to balance the bike and insert the key… since the key inserts into the left side of the frame, that could be tricky to reach and do if the bike is actually on its side or leaning close to a tree
  • Standard chainring teeth vs. narrow-wide for increased grab, no chain pulley to raise the chain and reduce kickback (though I did not experience any), the molded chain guide should prevent drops and chain suck
  • Apparently most Trek mountain bikes do not come with pedals, it’s a minor gripe, you’ll have to pick up some aftermarket (I brought my own lightweight magnesium Wellgo pedals for this event)
  • The Purion display panel looks good and gets the job done, but it isn’t removable and doesn’t have a functional Micro-USB port like the older Intuvia display … I’ve heard that some ebike dealers will upgrade the display for you if you’re willing to pay, not sure if Trek will do this?
  • Official Site: https://www.trekbikes.com/us/en_US/bikes/mountain-bikes/electric-mountain-bikes/c/B512/
  • More Pictures: https://photos.app.goo.gl/gJpiKx7LmqNJ4hD98

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A versatile city electric bike with sturdy paint-matched aluminum fenders, a bright and aimable headlight as well as a flashing backlight (both are powered by the main battery), and mounting points for a bottle cage and rear rack. Surprisingly comfortable, the wider tires provide cushion and stability, the saddle and suspension seat post…...

electric mountain bike trek powerfly

Trek Lift+ Lowstep Review

  • MSRP: $2,799
  • MODEL YEAR: 2017
  • Cruiser Electric Bike Reviews
  • Kids Electric Bike Reviews

A comfortable, low-step, cruiser style electric bike with balanced motor and battery position, multiple fun color choices, and several sizes (also available in high-step). Nicer 10-speed drivetrain with clutch for reducing chain bounce and slap, easy to pull hydraulic…...

electric mountain bike trek powerfly

Trek CrossRip+ Review

  • MSRP: $4,499

A lightweight, high speed, electric road bike with sturdy 12 mm thru-axle on the front wheel, Carbon fiber fork, and Alpha 200 Gold alloy frame to dampen vibration. Capable and comfortable on hard packed trails as a gravel grinder, sturdy Aluminum fenders and…...

electric mountain bike trek powerfly

2017 Trek Dual Sport+ Review

A lightweight, trail-capable, hybrid commuter electric bike, the larger 700c wheelset provides efficient rolling momentum and lower attack angle to smooth out cracks and bumps. Shimano STePs mid-drive is responsive, less power hungry than competing products, and relatively quiet, The…...

electric mountain bike trek powerfly

Trek Neko+ Review

A sporty hybrid electric bike offering a blend of efficiency and trail capability, suspension fork with lockout, hydraulic disc brakes. Removable battery and display panel reduce weight when lifting and transporting the bike, quick release…...

electric mountain bike trek powerfly

Trek Super Commuter+ 8S Review

  • MSRP: $4,999

A streamlined, feature-complete, commuter style electric bike with Class 3 high-speed operation (up to 28 mph), available through a wide network of dealers. 11-speed Shimano SLX drivetrain offers plenty of range for comfortable pedaling at low and high…...

electric mountain bike trek powerfly

Trek Powerfly 8 FS Plus Review

A full suspension trail bike from one of the "big three" brands in the US, it offers 130 mm travel with custom tuning for the added weight and power of the bike, excellent weight distribution. Quick-release wheels, removable battery, and removable display make the bike flexible and easy to transport…...

electric mountain bike trek powerfly

Trek XM700+ Review

  • MSRP: $3,499
  • MODEL YEAR: 2016, 2017, 2018

A sleek, light weight, speed pedelec capable of reaching ~28 mph, built around the Bosch Performance Speed drive system and a Shimano SLX 10 speed drivetrain. Integrated plastic fenders and chain guard keep you clean and are reinforced to reduce rattle…...

electric mountain bike trek powerfly

Trek Conduit+ Review

  • MODEL YEAR: 2016

A light weight, high-step only electric bike with premium fenders, pannier rack and integrated LED lights that would be perfect for commuting or short range touring. Delivers Shimano hydraulic disc brakes, a 10 speed drivetrain with Shimano Deore derailleur and quality…...

electric mountain bike trek powerfly

Trek Lift+ Review

A light weight, efficient and more upright city style electric bike with a two year warranty, features an adjustable stem and is available in both high-step and step-thru frame styles in four sizes for improved fit. Leverages the Shimano STePs drive system keeping weight low and centered across the frame, the…...

electric mountain bike trek powerfly

2011 Trek FX+ Review

  • MSRP: $2,679
  • MODEL YEAR: 2010, 2011

An efficient road-style electric bike with narrow slick tires and carbon fiber fork available in five frame sizes. Integrated LED lights run off the main battery pack, lots of additional mounting points for…...

electric mountain bike trek powerfly

2011 Trek Transport+ Review

  • MODEL YEAR: 2011
  • Electric Cargo Bike Reviews

One of the earliest mass produced electric cargo bikes in the US (available in 2011) offered a purpose built frame with lots of attachment points (front basket, rear rack, running boards and included cargo bag). High-end drive system from BionX, rebranded as "Electric Propulsion Systems" EPS by Trek offering smooth,…...

Comments (4) YouTube Comments

Great review, appreciate all the detailed information! A couple of questions…

  • Would a Powerfly be a reasonable choice for urban commuting and mixed use (50:50) recreational trail/road riding or would the set up and the knobby tires make these bikes a poor fit for the road?
  • If you were to compare the range of the Powerfly vs the Supercommuter +8s under identical conditions on the road, would the Powefly come up short? i.e. is the motor on the Powerfly tuned much more for torque than speed such that it would be range limited on the road?

Great question, Dave! I have done exactly what you suggest here because comfort is such a big deal for me and I only have had budget/space enough for one bike. I went with a full suspension Haibike, Easy Motion, and then Specialized over the past few years and just wore a backpack for supplies. The knobby tires produce more noise but otherwise work great in all conditions… not having fenders can mean you get wet and dirty, but there are some zip-tie mounting mud guards that could help with that as well. Regarding range… both the high speed motor and high torque motors use more energy, and a lot of this depends on where and how you ride, but the high-torque CX is my preference because it offers eMTB mode and can be ridden legally in more locations. You can always add some lights to the bike and wear a backpack to commute, but you cannot as easily take a Supercommuter off-road. I think you’d probably get similar range on both in urban environments :)

Hi Court, thanks for another fine review. Your mechanical camera shots keep getting better, so keep up with the shifting segments and suspension action, apparently taken using various frame or handlebar camera mounts… way cool. Additional closeups and camera time on suspension pivot points and other key mechanical features are always welcome. Please avoid the 1 hand MTB riding shots, use the helmet cam, I don’t want to lose you, man!

But I didn’t hear much about motor power. 250W just seems so small. Yes, I know there is a 15t in the front and a 46t in the back so even a 250W will climb dang near straight up, but still, how fast? I remember an old Hilltopper review you did and that little 250W motor chattered and stalled. Yes, I know that with the mid drive it is not going to chatter or stall on even a very steep hill, but aren’t you then limited to beginner speeds? Doesn’t that little 250W motor get boring after the first couple rides?

It seems that quality mid drives only come in 250W. Bafang makes 750W and 1000W but they are Chinese motors that don’t last and have some poorly engineered features, poor workmanship, and low grade materials (I’ve had my BBS02 apart 5 times, burnt winding, blown anti-vibration O ring, stripped plastic gear, broken steel ring gear teeth, blown controller FET).

Does a Japanese, European, or American manufacturer make a well engineered, reliable, mid drive in the 500W to 1000W range?

Thanks for the encouragement around frame shots, and your concern for my safety! Regarding motor power, think of it like 600 watts and up to 75 newton meters with an efficiency of 250 watts for flat sections. The Bosch Performance Line CX if very capable. It’s smarter and much more dynamic than other ebike motors (especially hub motors that tend to hype their peak output). In terms of mid-motors, I have found that the Bosch drive is one of the zippier and sportier feeling systems, I don’t think you’ll be bored at all. You are correct that Bafang has a series of more powerful motors, and that they tend to use less sophisticated sensors and possibly lower quality hardware. I haven’t spent as much time with those motors digging in the way it sounds like you have. As for premium mid-drive systems that reach into the 1,000 watt range… no, I think the Bosch CX, Brose S or S Mag, Shimano E8000, and Yamaha PW X are the best to consider and I’ve made a little comparison video with steep climbing that you can check out here .

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Trek Powerfly 5 Electric Mountain Bike 2018 Charcoal

With Pre-Order , you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

With Pre-Launch , the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

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In the unlikely event that you are dissatisfied with your purchase please feel free to return your goods within 60 days of the purchase date for a full exchange or refund. Any item (excluding food and underwear) can be returned to us for any reason provided it is returned in ‘showroom condition’, with its original packaging, tags and a valid receipt/delivery note. Simply box up your items for return, include a cover note with the word REFUND or EXCHANGE inside & follow the below steps for safe return to our warehouse; where your return will be processed promptly.

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Leisure Lakes Bikes, Unit 9 Centurion Industrial Estate, Centurion Way, Leyland, PR25 4GU

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Leisure Lakes Bikes Unit 9 Centurion Industrial Estate Centurion Way Leyland, PR25 4GU

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If you wish to return your bike to us please keep it in the box it arrived in and call us on 01772 644340 and we will arrange a collection.

Please note the following:

  • a) If we have sent you the incorrect bicycle, we will cover the cost of collection and delivery of the correct model.
  • b) If we have delivered the bicycle you ordered, but upon inspection you decide it is not the bike for you, we will charge you £50.00 for the collection.

Please do not ride the bike as a full refund cannot be given if the bike has been used or damaged.

Return Items to a store

Any item (excluding food and underwear) can be returned to any Leisure Lakes Bikes store not just the one you made your purchase at, including those made online. The item must be returned in ‘showroom condition’, with its original packaging, tags and with a valid receipt/delivery note.

Wrong size or you don't like the item?

If returning items that are not suitable for either refund or exchange you are accountable for the delivery cost in returning it to us. You should always keep proof of postage and we advise you to use a ‘signed for service’ when returning goods.

New faulty items/ Wrong Item Received

If you have received items that are faulty or not what you ordered send them back to us (using the steps above) and we will cover the delivery cost of the return if it is within 14 days of delivery. If we have supplied the correct product, it is not faulty or it is outside of the 14 days we can not be liable for your postage charges. You should always keep proof of postage and we advise you to use a ‘signed for service’ when returning goods.

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If you have received items that are faulty please send them back to us using the steps above. Please include a covering letter describing the fault and if you would like the item replacing or refunding. Once the item arrives back at our Mail Order Centre you will receive an email notifying you about the progress. Faulty items are then forwarded onto the suppliers to confirm the warranty issue. Please be patient with us as we need to receive this confirmation from the suppliers before we can process your request for a replacement/refund.

When returning the item please use Royal Mail1 st Class Recorded* so that you have a tracking reference just in case! If your item arrived faulty we will refund your postage cost. If the item was in full working order at the time of delivery to you, we can not refund your return postage cost.

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Refunds will be processed using the same method of payment used for the original purchase. Credit and debit card refunds must be made to the card used for the original transaction, cheque payments will be refunded in cash but due to banking restrictions can only be refunded at least 14 days after the original purchase date. Due to the high incidence of fraud we regret that we are unable to offer any refund without a valid receipt/delivery note.

Refunds will be made for faulty or incorrect items, including any delivery charge incurred by the buyer (excluding ‘Special Delivery’) in the return of the item. If the products you ordered are delivered to you in good condition but you wish to return them for any reason we will refund the full value of the goods excluding any carriage charge upon receipt of your returned goods.

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If you have not received your order please call us on 01772 644340 and a member of staff can confirm the shipping date. Unfortunately we cannot consider an item to be lost until 15 working days has passed (according to Royal Mail procedure). Once the 15 working days have passed we will be able to issue a full refund or resend your order.

Season:2018

Code:553952-TREK18

The  Trek Powerfly 5  Electric Mountain Bike 2018  makes mountain biking even more fun, building upon Trek's proven off-road legacy to create a supremely capable bike that allows you to go further and have more fun. Powered by the Bosch Performance CX pedal assist system, this rugged system delivers a maximum torque of up to 75 newtom metres, sustained power into the high cadence range for sporty acceleration as well as a sleek mid-mount motor for ideal weight balance and obstacle clearance.

The Bosch Purion display provides all the basic information at the click of a thumb: The new Purion on-board computer operates with maximum efficiency and precision. The display clearly shows the most important information, including a fully functional speedometer. The included remote control is a safe, easy way to choose the right level of support without taking your hands off the bars. Complete with a premium Bosch 500Wh lithium-ion battery that guarantees a long lifespan, that's also easy to remove and take with you.

Trek Powerfly 5 2018 Features

  • Powerful central-mount Bosch motor, for speeds up to 20 mph
  • Alpha Platinum Aluminium frame with additional Motor Armor protection
  • Ready for extras like lights, mudguards, racks, kickstand
  • The long-life battery is secured within the downtube and is easily removed for charging 

Upgrades from Powerfly 4

  • New integrated battery Boost148 frame
  • RockShox Judy TK Solo Air Fork
  • Bontrager Duster Elite TLR rims
  • Shimano Deore M6000 1x10 drivetrain
  • Shimano M315 brakes

Wheel Size Guide

15.5" Frame - 27.5" Wheel

17.5" <  29" Wheel

Trek Men's Bike Sizing Guide

We have put together a general sizing guide for Trek road and mountain bikes. Please see the below for a general size and check out the Trek Bikes Sizing Guide for all bike model guides and how to measure yourself. 

Trek Men's Road Bike Sizing Guide

Trek men's mountain bike sizing guide, trek men's commute bike sizing guide, write a review for trek powerfly 5 electric mountain bike 2018 charcoal, also in the range.

  • £6000 £6000 Trek Powerfly FS 7 Electric Bike 2024 White Prismatic/Plasma Grey Pearl
  • £4500 £4500 Trek Powerfly Equipped Sport 5 Electric Bike 2024 White Prismatic/Plasma Grey Pearl
  • £4500 £4500 Trek Powerfly Equipped Sport 5 Electric Bike 2024 Dark Prismatic/Trek Black
  • £3700 £3700 EX Display Trek Powerfly 7 Medium Electric Bike 2023 Crimson/Lithium
  • £3299 £3425 Trek Powerfly Sport 4 Equipped Electric Bike 2023 Matte Black/Gloss Red
  • £4199 £4625 Trek Powerfly Sport 7 Equipped Electric Bike 2023 Crimson/Lithium Grey
  • £4199 £4625 Trek Powerfly Sport 7 Equipped Electric Bike 2023 Matte Dnister Black
  • £3495 £4450 Trek Powerfly 7 Electric Bike 2023 Satin Supernova/Dnister Black
  • £4450 £4450 Trek Powerfly 7 Electric Bike 2024 Crimson/Lithium Grey
  • £3495 £4450 Trek Powerfly 7 Electric Bike 2023 Matte Dnister Black/Gloss Trek Black
  • £3150 £3975 Trek Powerfly 5 Electric Mountain Bike Satin Blue Sage/Juniper
  • £3150 £3975 Trek Powerfly 5 Electric Mountain Bike Lava/Lithium Grey
  • £3975 £3975 Trek Powerfly 5 Electric Mountain Bike Dark Prismatic/Trek Black
  • £2950 £3700 Trek Powerfly 4 625 Electric Bike 2023 Living Coral/Solid Charcoal
  • £3199 £3700 Trek Powerfly 4 625 Electric Bike 2023 Gloss Alpine/Gloss Lithium
  • £2950 £3700 Trek Powerfly 4 625 Electric Bike 2023 Matte Black/Gloss Red
  • £4550 £5550 Trek Powerfly FS 9 Equipped Electric Bike 2023 Satin Lithium Grey/Trek Black
  • £4550 £5550 Trek Powerfly FS 9 Equipped Electric Bike 2023 Hex Blue/Deep Dark Blue
  • £3700 £4625 Trek Powerfly FS 4 Equipped Electric Bike 2023 lava/Trek Black
  • £3700 £4625 Trek Powerfly FS 4 Equipped Electric Bike 2023 Matte Dnister Black
  • £4850 £6025 Trek Powerfly FS7 Electric Mountain Bike 2023 Matte/Gloss Supernova
  • £6025 £6025 Trek Powerfly FS7 Electric Mountain Bike 2024 Dark Prismatic/Trek Black
  • £3350 £4175 Trek Powerfly FS4 Electric Bike 2023 Lava/Trek Black
  • £3350 £4175 Trek Powerfly FS4 Electric Bike 2023 Matte Dnister Black/Gloss Trek Black
  • £3250 £3250 Trek Powerfly 4 Electric Mountain Bike 2022 Azure/Nautical Navy
  • £3250 £3250 Trek Powerfly 4 Electric Mountain Bike 2022 Radioactive Red/Trek Black
  • £3299 £3950 Trek Powerfly 5 Electric Mountain Bike 2022 Lithium/Rose Gold
  • £3950 £3950 Trek Powerfly 5 Electric Mountain Bike 2022 Crystal White/Lithium
  • £3299 £3950 Trek Powerfly 5 Electric Mountain Bike 2022 Anthracite/Volt Miami Fade
  • £3950 £3950 Trek Powerfly 5 Electric Mountain Bike 2022 Black/Lithium
  • £3999 £4700 Trek Powerfly 7 Electric Mountain Bike 2022 Factory Orange/Lithium
  • £3999 £4700 Trek Powerfly 7 Electric Mountain Bike 2022 Nautical Navy/Miami Green
  • £3999 £4700 Trek Powerfly 7 Electric Mountain Bike 2022 Dark Prismatic/Trek Black
  • £4900 £4900 Trek Powerfly 7 Equipped Electric Mountain Bike 2022 Dark Prismatic
  • £2999 £3550 Trek Powerfly 4 625 Electric Mountain Bike 2022 Radioactive Red/Black
  • £2999 £3550 Trek Powerfly 4 625 Electric Mountain Bike 2022 Azure/Nautical Navy
  • £3499 £4250 Trek Powerfly FS 4 500 Electric Mountain Bike 2022 Crimson/Lithium
  • £3499 £4250 Trek Powerfly FS 4 500 Electric Mountain Bike 2022 Aquatic/Trek Black
  • £3799 £4550 Trek Powerfly FS 4 625 Electric Mountain Bike 2022 Aquatic/Trek Black
  • £3799 £4550 Trek Powerfly FS 4 625 Electric Mountain Bike 2022 Crimson/Lithium
  • £4700 £4700 Trek Powerfly FS 4 EQ Electric Mountain Bike 2022 Crimson/Lithium
  • £3999 £4700 Trek Powerfly FS 4 EQ Electric Mountain Bike 2022 Aquatic/Trek Black
  • £5699 £6700 Trek Powerfly FS 9 Equipped Electric Mountain Bike 2022 Matte Black
  • £3899 £4600 Trek Rail 5 Deore 500w Electric Mountain Bike 2022 Crimson/Lithium
  • £3899 £4600 Trek Rail 5 Deore 500w Electric Mountain Bike 2022 Black/Miami Green
  • £3499 £4250 Trek Powerfly FS 4 500 W Electric Mountain Bike 2021 Gunmetal/Black
  • £3999 £4700 Trek Powerfly FS 4 EQ Electric Mountain Bike 2021 Gunmetal/Black
  • £3799 £4550 Trek Powerfly FS 4 625 W Electric Mountain Bike 2021 Gunmetal/Black
  • £2999 £3500 Trek Powerfly Sport 4 EQ Electric Hardtail Mountain Bike 2021 Grey
  • £3250 £3250 Trek Powerfly 4 Electric Hardtail Mountain Bike 2021Charcoal/Miami
  • £3250 £3250 Trek Powerfly 4 Electric Hardtail Mountain Bike 2021 Grey/Trek Black
  • £2999 £3550 Trek Powerfly 4 625 Electric Hardtail Mountain Bike 2021 Grey/Miami
  • £3550 £3550 Trek Powerfly 4 625 Electric Hardtail Mountain Bike 2021 Grey/Black
  • £10.99 £10.99 Trek e-MTB Battery Cover Black
  • £214.99 £249 Bosch COBI Bike Sport for E Bikes

Leisure Lakes Bikes

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Our mail order phone lines are open:

Monday : 10am - 5pm

Tuesday - Friday : 9:30am - 5pm

Before calling, please visit our Contact Us page & have a look at our F.A.Q's - you may find the answer to your query!

11 UK Stores

Our stores are open 7 days a week*!

To find your nearest store & check their individual opening hours please visit our store finder page here .

Warning notices: Tuned e-bikes and e-scooters are not allowed on public roads!

E-Bike Tuning

E-Bike Tuning

electric mountain bike trek powerfly

E-Bike Tuning!

Perfect Tuning-Solutions for your E-Bike.

E-Bike Tuning 2024 – Here´s how it works:

electric mountain bike trek powerfly

Step 1: Find out the exact designation of your e-bike motor:

electric mountain bike trek powerfly

Step 2: Find and compare matching tuning products:

electric mountain bike trek powerfly

Step 3: Order and install the best tuning product:

Unlock your e-bike to extend the support of the electric motor beyond the 25 km/h limit - or even remove the limitation completely. With some tuning solutions, the electric bike can even be quickly converted back into compliance with road traffic regulations in just a few steps! Some e-bike tuning products and various special tools are exclusive available only from us. Since 2013 we offer the best support so that you can use the full power of your e-bike! Here you will find the most popular tuning products for the most popular e-bikes:

Bosch Smart System

Yamaha powerdrive, giant syncdrive, the e-bike motors overview.

Here you can find all e-bike motors where you can unlock the speed limit. For the more popular motors, there are sometimes a wide variety of solutions, while for others there are only individual options to unlock them:

electric mountain bike trek powerfly

The best e-bike tuning brands!

Many of the listed tuning brands are only available exclusively from us. Some brands offer products for many e-bike motors, while others offer solutions for only a few. In addition, we have developed our own tools. Thus, here you will find the most comprehensive overview on the subject of e-bike tuning ever. We present the best brands here:

electric mountain bike trek powerfly

There is always something to be tuned!

Legal information:

We explicitly point out that in Germany electric bike tuning products may only be used in private, enclosed areas – for example, for sports and advertising purposes. Electric bike tuning manipulates the speed of your pedelec / electric bike, and this is not allowed in the area of German Road Traffic Licensing Regulations (StVZO). You have to use the tuning products from our shop at your own risk. We accept no liability whatsoever for any current or future damage to objects and/or persons caused by the improper installation/installation and/or use of tuning tools from our shop. Liability, warranty and guarantee claims may be limited or completely cancelled by the use or application of the tuning, as the installation or use of the e-bike tuning results in a modification or manipulation of your e-bike. Even the installation of a larger chain ring can result in the expiry of the manufacturer´s guarantee. If your e-bike has an operating licence, it will generally expire as well. The installation and operation of a tuning product is at the user's own risk. Manufacturers and dealers accept no liability for damage associated with the use of tuning tools. Please always drive carefully, use protective clothing such as helmets or protectors and do not put yourself or others in danger. Talk to your insurance company beforehand to make sure all of your actions are protected in the best possible way. Please also bear in mind that other countries have different legal requirements. This is especially important if you are going on holiday with an e-bike. Please inform yourself in advance about the regional legislation in the country you are in and always comply with the respective legal regulations. Only ride your tuned e-bike where it is really allowed.

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NCM Moscow Plus

NCM Moscow Plus

An e-mountain bike equipped with high-end brake and drive systems, the NCM M5 is for adventurous riders who want to hit the trails comfortable in the knowledge that their ebike can handle whatever they throw at it.

BIKE COMPONENTS

Frame: Alu. 6061, 26"*17.3 inches / Alu. 6061, 27.5"*18.9 inches / Alu. 6061, 29"*20.5 inches

Suspension Fork: Suntour, XCM-HLO-26/27.5/29, with hydraulic lock system

Brake: F/R: Tektro Hydraulic Disc Brakes,HD-E350

Freewheel: LY, 8 Speed, 11-32T, Silver

Tire: Schwalbe, Black Jack, 26"*2.1/Smart Sam, 27.5"*2.35/29"*2.35, Black

Saddle: Selle Royal, Lookin-A200UR, Black

Crank: Das-Kit, CM48,28/38/48T

Derailleur: F: Shimano, Altus, FD-M310, R: Shimano, Acera, RD-M360

ELECTRIC COMPONENTS

Battery: Das-Kit, i5-4816, 48V 16AH, 768WH

Hub Motor Rated / Peak Power: Das-Kit, X15, 48V 500W / 900W

Controller: Das-Kit, CT-i5, 48V 18A

Charger: Das-Kit, 48V3A

Display: Das-Kit, C7 

Net Weight (with battery): 57.0 lbs

Battery Weight: 9.1 lbs

Max Load (driver+bike): 275.0 lbs

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Our on-line store is open 24/7 and we ship Monday through Friday, excluding some holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 12:00 p.m. PST. Orders in high demand will have an estimated production time listed on its product page and will ship according to the date listed.

Customer Reviews

Battery compartment design is weak. I have anther Moscow and ot would come lose on top. Screws are so small. I also woul brace the battery with strap due to rattling. Otherwise love my moscow

We purchased the NCM Moscow 29 E bike from Leon Cycles earlier this month. Communication was via 'Whatsapp' which I initially thought a little odd but worked out well. Once communication established the transaction was completed quickly and easily. We were able to arrange for the team to assemble the bike for us and we picked it up from the warehouse without an issue. We love the bike and are continuing to find new places to discover using it. Competitive price and great service.

I ordered the bike 4 days ago and today it arrived. Now my first impressions: it is easy to assemble, looks great, is cleanly finished and after a first short driving test I have to say, the hammer. It's totally easy to drive. If it stays that way, I can only say thank you Leon Cycle. Now I can cycle again, despite knee problems. Price-performance top

Great bike, this is my second e bike and by far the best. Watching e bikes over the last 10 years I think the Moscow 29er is fantastic. I live in the Dandenongs outside Melbourne with big steep hills and the Moscow takes them all on with great pulling power and gear range. 48v with 16 amps means over 750 watts of power. The bike is big and serious so getting on and off can be tricky but you do get used to it. With the previous bike (36v at 8amps) I was scared of running out of battery on a big hill and having to push the bike home but not with the Moscow. Also if you take the front wheel off you can get it in a hatchback like my Mazda 3 Which is nice. At $2200 it is a great buy.

Purchased two Moscow 27.5. One for my wife, one for me. Fast delivery, well boxed and easy assembly. Absolutely FANTASTIC to ride and use. Great range, and enough power for steep hills and tough terrain. I highly recommend them. Exactly as advertised and brochure. Looked at many options from other suppliers but these are the best value for money. If anyone wants a little extra range and a few more features then a Moscow Plus may suit. 48 Volt is the way to go. Great support and assistance from the team at Leon to make the right purchase decision. Hope other people may enjoy the ride and quality product. Harry G

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Highlighted Features

electric mountain bike trek powerfly

Das-Kit 500W Motor

electric mountain bike trek powerfly

Ergonomic handlebar grips

electric mountain bike trek powerfly

Moscow 48V disc brake

Product specifications.

Battery: Das-Kit, i5-4816, 48V 16Ah, 768Wh

Hub Motor Rated / Peak Power: Das-Kit, X15, 48V 500W / 750W

Display: Das-Kit, C7

electric mountain bike trek powerfly

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NCM Moscow Plus

NCM Moscow Plus

An e-mountain bike equipped with high-end brake and drive systems, the NCM M5 is for adventurous riders who want to hit the trails comfortable in the knowledge that their ebike can handle whatever they throw at it.

BIKE COMPONENTS

Frame:   Alu. 6061, 26"*17.3 inches / Alu. 6061, 27.5"*18.9 inches / Alu. 6061, 29"*20.5 inches

Suspension Fork:   Suntour, XCM-HLO-26/27.5/29, with hydraulic lock system

Brake:   F/R: Tektro Hydraulic Disc Brakes,HD-E350

Freewheel:   LY, 8 Speed, 11-32T, Silver

Tire:   Schwalbe, Black Jack, 26"*2.1/Smart Sam, 27.5"*2.35/29"*2.35, Black

Saddle:   Selle Royal, Lookin-A200UR, Black

Crank:   Das-Kit, CM48,28/38/48T

Derailleur:   F: Shimano, Altus, FD-M310, R: Shimano, Acera, RD-M360

ELECTRIC COMPONENTS

Battery:   Das-Kit, i5-4816, 48V 16AH, 768WH

Motor: Das-Kit, X15, Rear drive motor, 48V 500W, 32KM/H

Controller:   Das-Kit, CT-i5, 48V 18A

Charger:   Das-Kit, 48V3A

Display:   Das-Kit, C7

Net Weight (with battery): 26.0kg

Battery Weight: 4.0kg

Max Load (driver+bike): 125.0kg

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Our on-line store is open 24/7 and we ship Monday through Friday, excluding some holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 12:00 p.m. PST. Orders in high demand will have an estimated production time listed on its product page and will ship according to the date listed.

Customer Reviews

I like my mountain plus bike.The only problem i have, the third speed jump when i put some pressure . Its not an adjustement, everything is fine. The problem is with the freewheel .I did 70 kilometer with the bike and it attenuate the problem a little.

Bike assembled easy and ride good.

We purchased the NCM Moscow 29 E bike from Leon Cycles earlier this month. Communication was via 'Whatsapp' which I initially thought a little odd but worked out well. Once communication established the transaction was completed quickly and easily. We were able to arrange for the team to assemble the bike for us and we picked it up from the warehouse without an issue. We love the bike and are continuing to find new places to discover using it. Competitive price and great service.

Been riding the trails both road and mountain for a few months. Great power and no issues with components

I ordered the bike 4 days ago and today it arrived. Now my first impressions: it is easy to assemble, looks great, is cleanly finished and after a first short driving test I have to say, the hammer. It's totally easy to drive. If it stays that way, I can only say thank you Leon Cycle. Now I can cycle again, despite knee problems. Price-performance top

electric mountain bike trek powerfly

Highlighted Features

electric mountain bike trek powerfly

Das-Kit 500W Motor

electric mountain bike trek powerfly

Ergonomic handlebar grips

electric mountain bike trek powerfly

Moscow 48V disc brake

Product specifications.

Frame: Alu. 6061, 26"*17.3 inches / Alu. 6061, 27.5"*18.9 inches / Alu. 6061, 29"*20.5 inches

Suspension Fork: Suntour, XCM-HLO-26/27.5/29, with hydraulic lock system

Brake: F/R: Tektro Hydraulic Disc Brakes,HD-E350

Freewheel: LY, 8 Speed, 11-32T, Silver

Tire: Schwalbe, Black Jack, 26"*2.1/Smart Sam, 27.5"*2.35/29"*2.35, Black

Saddle: Selle Royal, Lookin-A200UR, Black

Crank: Das-Kit, CM48,28/38/48T

Derailleur: F: Shimano, Altus, FD-M310, R: Shimano, Acera, RD-M360

Battery: Das-Kit, i5-4816, 48V 16AH, 768WH

Motor:  Das-Kit, X15, Rear drive motor, 48V 500W, 32KM/H

Controller: Das-Kit, CT-i5, 48V 18A

Charger: Das-Kit, 48V3A

Display: Das-Kit, C7

electric mountain bike trek powerfly

Featured products

Sign up to get the latest updates on sales, news release, and more.

Region/Country

  • United States

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  • Contact Information
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  • Shipping Policy
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  • Privacy Policy

© 2024, NCMBike CA

Thanks for subscribing

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  18. NCM Moscow Plus

    An e-mountain bike equipped with high-end brake and drive systems, the NCM M5 is for adventurous riders who want to hit the trails comfortable in the knowledge that their ebike can handle whatever they throw at it. BIKE COMPONENTS Frame: Alu. 6061, 26"*17.3 inches / Alu. 6061, 27.5"*18.9 inches / Alu. 6061, 2 ... ELECTRIC COMPONENTS. Battery ...

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