Trek Powerfly+ 8 Gen 5 2027 - Electric Mountain Bike

The Trek Powerfly+ 8 Gen 5 combines a durable aluminium frame, Bosch electric assistance and reliable MTB components. With a Fox AWL Rail fork, SRAM Eagle 70 12-speed gearing and Shimano four-piston brakes, it's designed for exploring trails, tackling climbs and enjoying longer rides.
Key Features:
- Frame: Alpha Platinum Aluminium hardtail frame with trail geometry and integrated battery.
- Fork: Fox AWL Rail with Rail 2.0 damper and 120mm suspension travel.
- Drivetrain: SRAM Eagle 70 T-Type 1x12-speed with 10-52T cassette.
- Brakes: Shimano BR-MT620 four-piston hydraulic disc brakes.
- Wheels: 29-inch Bontrager Kovee wheels with Gunnison Pro XR 2.4-inch tubeless-ready tyres.
- Extras: Bontrager Line Dropper post, RIB 2.0 battery system and Motor Armour protection.
- Available with 0% APR finance.
Drive Information:
- Motor: Bosch Performance Line CX Gen 5, up to 120Nm torque with compatible software update.
- Battery: Bosch 800Wh integrated battery with Trek's Removable Integrated Battery 2.0 system.
Alpha Platinum Aluminium Frame
The Trek Powerfly+ 8 Gen 5 features an Alpha Platinum Aluminium frame designed for durability and confident off-road handling. Its hardtail construction provides efficient pedalling and straightforward maintenance, making it suitable for exploring forest tracks, gravel routes and mountain bike trails.
The frame features Boost148 rear spacing, a tapered head tube and guided internal cable routing. Trek's Motor Armour provides additional protection around the motor, while the Removable Integrated Battery 2.0 system keeps the battery securely housed within the downtube.
Fox AWL Rail Suspension Fork
The Fox AWL Rail fork provides 120mm of suspension travel to absorb bumps, roots and rocks on uneven terrain. Its Rail 2.0 damper helps control suspension movement, while the sturdy chassis is designed to handle the additional demands of electric mountain biking.
With a Boost110 front axle and tapered steerer, the fork provides a stable front end for steering control on rough trails and descents.
Bosch Performance Line CX Motor
The Bosch Performance Line CX Gen 5 motor delivers powerful, responsive pedal assistance for tackling steep climbs and challenging terrain. With up to 120Nm of torque available through a compatible Bosch software update, it provides additional support when accelerating and riding uphill.
Bosch's assistance system responds to rider input, helping deliver controlled power across changing terrain. Support characteristics can also be personalised through the Bosch eBike Flow app, allowing riders to adjust assistance to suit their preferences.
Bosch 800Wh Battery
The integrated 800Wh Bosch battery provides substantial capacity for longer rides and demanding routes. Its large capacity is particularly useful for riders exploring hilly terrain or spending extended periods using higher assistance levels.
Trek's Removable Integrated Battery 2.0 system allows the battery to be removed from the frame for charging or storage, adding convenience for everyday use.
SRAM Eagle 70 T-Type Drivetrain
The SRAM Eagle 70 T-Type 1x12-speed drivetrain provides a wide range of gears for varied terrain. Its 10-52T cassette offers low gearing for steep climbs while maintaining suitable ratios for faster sections of trail.
The T-Type rear derailleur is designed for precise shifting and durability, making it well suited to the demands of electric mountain biking.
Shimano Four-Piston Hydraulic Brakes
Shimano BR-MT620 four-piston hydraulic disc brakes provide powerful, controlled stopping performance. The four-piston design offers additional braking force for managing the weight and speed of an electric mountain bike, particularly on longer descents and technical terrain.
Bontrager Kovee Wheels and Gunnison Tyres
The Bontrager Kovee double-wall aluminium wheels feature a tubeless-ready design and 23mm internal rim width. Paired with Shimano TC500 hubs and Boost axle spacing, they provide a durable wheelset for recreational off-road riding.
Bontrager Gunnison Pro XR 29x2.4-inch tyres feature a dual-compound tread and tubeless-ready construction. Their wide profile provides traction and comfort on loose surfaces, while the 29-inch wheels help maintain momentum over uneven terrain.
Bontrager Line Dropper Post
The Bontrager Line Dropper seatpost offers 170mm of travel, allowing riders to lower their saddle using a handlebar remote. This creates additional room to move around the bike on descents, improving body positioning and control when riding more technical sections.
Comfortable Finishing Kit
A Bontrager Comp alloy handlebar with 40mm rise and Rhythm Comp stem provide an upright, controlled riding position. The Bontrager Commuter Comp saddle offers support for longer rides, while the supplied platform pedals make the bike ready for everyday riding.
Versatile Electric Mountain Biking
The Trek Powerfly+ 8 Gen 5 combines full-power Bosch assistance, a large-capacity battery and capable mountain bike components in a practical hardtail package. Whether exploring forest trails, tackling hilly routes or heading out on longer off-road adventures, it's designed to make varied terrain more accessible while retaining the feel of a traditional mountain bike.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Alpha Platinum Aluminium, Removable Integrated Battery (RIB 2.0), tapered head tube, guided internal routing, Control Freak internal routing, Motor Armour, Boost148, 12 mm thru axle |
| Fork | Fox AWL Rail, Rail 2.0 damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 180 mm direct mount, 120 mm travel, 29" Fox AWL Rail, Rail 2.0 damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt a |
| Headset | FSA IS-2, 1-1/8" top, 1.5" bottom |
| Stem | Bontrager Rhythm Comp, 31.8 mm, 0-degree |
| Bars | Bontrager Comp, alloy, 31.8 mm, 40mm rise |
| Front Brake | Shimano BR-MT620 hydraulic disc // Shimano BR-MT620 hydraulic disc Shimano BR-MT620 hydraulic disc // Shimano BR-MT620 hydraulic disc |
| Rear Brake | Shimano BR-MT620 hydraulic disc // Shimano BR-MT620 hydraulic disc Shimano BR-MT620 hydraulic disc // Shimano BR-MT620 hydraulic disc |
| Rear Mech | SRAM Eagle 70, T-Type |
| Rims | Bontrager Kovee, double-wall, Tubeless-Ready, 28-hole, 23 mm width, Presta valve // Bontrager Kovee, double-wall, Tubeless-Ready, 32-hole, 23 mm width, Presta valve |
| Front Hub | Shimano TC500 alloy, CentreLock, 110x15 mm thru axle |
| Rear Hub | Shimano TC500 alloy, CentreLock, 148x12 mm thru axle |
| Front Tyre | Bontrager Gunnison Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29x2.40" |
| Rear Tyre | Bontrager Gunnison Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29x2.40" |
| Seat Post | Bontrager Line Dropper, 170 mm travel, MaxFlow, internal routing, 31.6 mm |
| Saddle | Bontrager Commuter Comp |
| Chainset | FSA Alloy |
| Chain | SRAM Eagle 70, T-Type, 12-speed |
| Cassette | SRAM Eagle XS-1270, T-Type,10-52, 12-speed |
| Pedals | VP-536 nylon platform |
| Battery Size (WH) | 800 |
| Motor | Bosch Performance Line CX |
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Trek Powerfly+ Gen 5 Size Chart
| Size | Height cm | Height Feet / Inches | Inseam cm | Inseam Inches |
|---|---|---|---|---|
| S | 155 - 165 cm | 5'1" - 5'5" | 74 - 78 cm | 29" - 31" |
| M | 165 - 176 cm | 5'5" - 5'9" | 79 - 83 cm | 31" - 33" |
| L | 177 - 188 cm | 5'10" - 6'2" | 84 - 89 cm | 33" - 35" |
| XL | 188 - 195 cm | 6'2" - 6'5" | 89 - 91 cm | 35" - 36" |
What size frame do I need if I am between sizes? - read here
Trek Powerfly+ Gen 5 Geometry Chart
| Size | S | M | L | XL |
|---|---|---|---|---|
| Stack | 599 | 641 | 655 | 673 |
| Reach | 410 | 440 | 465 | 490 |
| Head Tube Length | 133 | 108 | 123 | 143 |
| Head Tube Angle | 65.5° | 66.5° | 66.5° | 66.5° |
| Bottom Bracket Height | 315 | 315 | 315 | 315 |
| Bottom Bracket Drop | 45 | 65 | 65 | 65 |
| Trail | 116 | 117 | 117 | 117 |
| Fork Rake/Offset | 44 | 44 | 44 | 44 |
| Chainstay Length | 442 | 461 | 461 | 461 |
| Wheelbase | 1151 | 1195 | 1226 | 1259 |
| Top Tube Length (horizontal) | 571 | 612 | 640 | 658 |
| Standover Height | 697 | 747 | 746 | 746 |
| Seat Tube Length | 370 | 400 | 420 | 450 |
| Seat Tube Angle | 73.0° | 73.3° | 73.4° | 74.6° |
| Effective Seat Tube Angle | 75.0° | 75.0° | 75.0° | 76.0° |
All measurements are in mm unless otherwise stated.
The above table shows the standard geometry for the bicycle as shipped, other geometry configurations may be available with certain bikes. Please contact us via Live Chat to find out more.
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