Trek Powerfly+ FS 8 Gen 4

Powerfly FS+ 8 is the full-power, full-suspension e-MTB designed for those who want to push every trail adventure further. The robust Alpha Platinum Aluminium frame offers the perfect balance between lightness and strength, while the 130mm front and 120mm rear Fox suspension tames roots, rocks, and rock gardens with confidence and control.

The wireless 12-speed Shimano XT Di2 drivetrain ensures ultra-smooth, precise shifting even on the most demanding terrain, allowing you to make the most of the motor’s power in every situation, from long technical climbs to fast descents.

The RIB 2.0 (Removable Integrated Battery) system makes battery management incredibly easy: it can be removed in seconds for charging or transport, and it features a secondary safety catch that prevents any risk of accidental dropping.

Perfect for trail riding, alpine tours, and exploratory outings, the Powerfly FS+ 8 is the ideal electric mountain bike for those seeking performance, range, and reliability in a single bike, backed by Trek’s build quality and extensive e-MTB experience.

TECHNICAL SPECIFICATIONS

FRAMESET

• Frame: Alpha Platinum Aluminum, Removable Integrated Battery (RIB 2.0), tapered head tube, guided internal cable routing, Motor Armor, adjustable Mino Link geometry, adjustable leverage ratio, 34.9mm seat tube, ABP, UDH, rack and fender mounts, Boost 148, 120mm travel

• Fork: Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt thru axle, 150mm travel

• Rear shock: Fox Float Rhythm, 2-position damper, 210x50 mm

WHEELS

• Hubs:

  • Front: Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle

  • Rear: Bontrager alloy, sealed bearing, 6-bolt, Rapid Drive 108, Shimano freehub, Boost148, 12mm thru axle

• Tyres:

  • L - M - XL : Bontrager Gunnison Pro XR, Tubeless Ready, dual compound, aramid bead, 60tpi, 29x2.40"
  • S : Bontrager Gunnison Pro XR, Tubeless Ready, wire bead, 60tpi, 27.5x2.40"

ELECTRONIC SYSTEM

• Controller: Bosch Kiox 300, smart system

• Motor: Bosch Performance Line CX 

• Battery: Bosch PowerTube 800Wh, Smart System

DRIVETRAIN

• Pedals: Nylon platform

• Chain: Shimano Deore M6100, 12-speed

• Cassette: Shimano XT M8100, 10-51, 12-speed

• Rear Derailleur: Shimano XT Di2 M8260, 12-speed

• Brake: Shimano XT M8220 4-piston hydraulic disc 

COMPONENTS

• Saddle: Bontrager Verse P3, steel rails

• Seatpost:

  • S : Bontrager Line dropper seatpost, 100mm travel, MaxFlow, internal cable routing, 31.6mm, length 310mm
  • L - M - XL : Bontrager Line dropper seatpost, 170mm travel, MaxFlow, internal cable routing, 31.6mm, length 450mm

• Handlebar: Bontrager Comp, alloy, 31.8mm, 40mm rise, 780mm width

• Grips: Trek Line Comp, nylon lock-on

• Headset: FSA IS-2, 1-1/8" upper, 1.5" lower

• Rotor size: Shimano RT-6B750, 6-bolt, 200mm

WEIGHT

• Weight: Size M – 24.88 kg / 54.86 lbs (with TLR sealant, without inner tube)

• Weight limit: This model has a maximum total weight limit of 136 kg (combined weight of the bicycle, rider and cargo).

The manufacturer reserves the right to make changes to the product information on the website at any time without notice, including with regard to equipment, specifications, models, colors, materials, and prices. Due to supply chain issues, compatible parts may be substituted at any time without notice.