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It's right for you if...
You're sold on the e-bike revolution and want the capability and versatility of a mountain bike at a price that doesn't resemble the car you're trying to use less. You want bigger, better off-road adventures, and know that an e-MTB with the latest user-friendly tech is the best way to get them.
The tech you get
A tough yet refined aluminium frame that fully encases a long-range 500 Wh battery for sleek looks, a Bosch Performance CX (250 W, 85 Nm) motor that assists up to 25 km/h, a Bosch Purion controller, a 1x10 Shimano drive train, an SR Suntour fork with lockout and hydraulic disc brakes. Plus, Smart Wheel Sizing means riders of every size get a great fit – 29˝ wheels on larger frames, 27.5˝ wheels on smaller frames.
The final word
Our most affordable electric mountain bike comes with the same powerful Bosch motor and intuitive controller as our most expensive e-bikes, with a smaller battery and parts chosen to give you great value.
The Walkthrough
favorite_borderWhy you'll love it
- Trek's Removable Integrated Battery (RIB) system looks great and is super user-friendly: it fully hides the battery in the frame for protection, makes it easy remove the battery without tools and lets you mount a water bottle cage
- This bike expands boundaries: the top-notch Bosch system is equally suited to commuting, recreation and a ridiculously fun time on the trails
- The Purion controller has Walk Assist and an intelligent eMTB mode that automatically delivers the right amount of power based on your terrain
- It's equipped with an external charging port for easy charging on or off the bike
- You can boost your Powerfly’s utility by adding a rack and mudguards, plus built-in wiring lets you easily install lights powered by the motor
Features
RIB is a one-piece battery and cover with a built-in handle that can easily be removed and re-installed in the frame with no tools and no hassle. It’s the most convenient way to remove your battery for transport, security or just easier charging.
Will my bike have a curved top tube?
Smaller frames (S) have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. The larger frames (M and ML) have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.
Bosch Performance Line CX motor
The Bosch Performance Line CX sets the standard for eMTB performance with up to 85 Nm of torque and an intelligent eMTB mode with Extended Boost that automatically adjusts the amount of assist based on the terrain.
Rack mounts
Going for a long ride? Rack mounts make carrying accessories a breeze.
Rear kickstand mount
Chainstay mounts make it easy to install a rear kickstand that stays out of your way and supports bikes of all sizes. No more laying or leaning.
Alpha Platinum Aluminium
Our premium lightweight aluminium is continuously cold extruded and butted at multiple points, and hydroformed into sophisticated tube shapes for maximum strength and minimum weight.
Lighting ready
The bike is already internally wired to accept additional lights. Go to your dealer and simply have them attached to the bike and plug them in.
Smart Wheel Size
The right wheel size paired with your frame size gives you the perfect combination of responsiveness and control.
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armor, Boost148 |
|---|---|
| *Fork |
Size:
XS SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 80 mm travel |
|
Size:
S , M , L , XL SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 120 mm travel |
| Hub front | Formula DC-511, 6-bolt, Boost110, 15 mm thru axle |
|---|---|
| Hub rear | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12 mm thru axle |
| Rim | Bontrager Connection, double-wall, 32-hole, 20 mm width, Presta valve |
| Spokes | 14 g stainless steel |
| *Tyre |
Size:
XS , S Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.35" |
|
Size:
M , L , XL Bontrager XR3 Comp, wire bead, 30 tpi, 29x2.30" |
| Shifter | Shimano Deore M4100, 10 speed |
|---|---|
| Rear derailleur | Shimano Deore M5120, long cage |
| Crank | FSA Bosch CK-220, 36T ring, 165 mm length |
| Cassette | Shimano Deore M4100, 11-46, 10-speed |
| Chain | KMC X10, 10-speed |
| Pedal | VP-536 nylon platform |
| Saddle | Bontrager Commuter Comp |
|---|---|
| *Seatpost |
Size:
XS , S Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length |
|
Size:
M Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length |
|
|
Size:
L , XL Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length |
|
| *Handlebar |
Size:
XS , S Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width |
|
Size:
M , L , XL Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width |
|
| Grips | Bontrager XR Endurance Comp |
| *Stem |
Size:
XS Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 50 mm length |
|
Size:
S , M Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 60 mm length |
|
|
Size:
L , XL Bontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 70 mm length |
|
| Head set | FSA IS-2, 1-1/8" top, 1.5" bottom |
| Brake | Tektro HD-M275 hydraulic disc |
| Brake rotor | Tektro, 6-bolt, 203 mm |
| Battery | Bosch PowerTube, vertical, 500 wh |
|---|---|
| Charger | Bosch compact 2A (100-240 V) charger |
| Controller | Bosch Purion |
| Motor | Bosch Performance CX, magnesium motor body, 250 watt, 85 Nm, 25 km/h (15.5 mph) max assist, 32 km/h for New Zealand |
| Weight | M - 23.67 kg / 52.18 lbs (with tubes) |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb). |
Sizing & fit
Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.
Rider Height
Inseam
XS
137.0 - 155.0 cm
4'5.9" - 5'1.0"
64.0 - 73.0 cm
25.2" - 28.7"
S
153.0 - 166.5 cm
5'0.2" - 5'5.6"
72.0 - 79.0 cm
28.3" - 31.1"
M
161.0 - 175.0 cm
5'3.4" - 5'8.9"
76.0 - 82.0 cm
29.9" - 32.3"
L
174.0 - 188.0 cm
5'8.5" - 6'2.0"
82.0 - 88.0 cm
32.3" - 34.6"
XL
186.0 - 196.0 cm
6'1.2" - 6'5.2"
87.0 - 92.0 cm
34.3" - 36.2"
All measurements provided in cm unless otherwise stated.
| Frame size number | Frame size letter | Wheel size | A — Seat tube | Effective seat tube angle | C — Head tube length | D — Head angle | E — Effective top tube | F — Bottom bracket height | G — Bottom bracket drop | H — Chainstay length | I — Offset | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 13.5 | XS | 27.5" | 36.3 | 70.0° | 12.0 | 65.0° | 57.9 | 32.8 | 3.7 | 45.5 | 5.1 | 11.4 | 113.5 | 70.6 | 35.2 | 62.1 |
| 15.5 | S | 27.5" | 39.4 | 71.5° | 13.0 | 67.6° | 59.8 | 30.7 | 4.9 | 45.5 | 4.2 | 10.1 | 112.5 | 72.1 | 39.0 | 62.3 |
| 17.5 | M | 29" | 41.9 | 71.7° | 13.0 | 67.7° | 61.7 | 32.4 | 4.9 | 45.5 | 5.1 | 9.8 | 115.5 | 79.4 | 40.6 | 63.9 |
| 19.5 | L | 29" | 47.0 | 71.7° | 14.0 | 67.7° | 64.1 | 32.4 | 5.0 | 45.5 | 5.1 | 9.8 | 118.0 | 81.6 | 42.7 | 64.8 |
| 21.5 | XL | 29" | 52.1 | 71.7° | 16.0 | 67.7° | 67.2 | 32.4 | 5.0 | 45.5 | 5.1 | 9.8 | 121.2 | 81.8 | 45.2 | 66.7 |