Trek Powerfly FS+ 8 Gen 4 2025
Trek Powerfly FS+ 8 Gen 4 2025

Trek Powerfly FS+ 8 Gen 4 2025

5329741

Regular price £6,400.00
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The Powerfly FS+ 8 is a deluxe full-power, full suspension electric mountain bike ready for adventure. Its sturdy aluminium frame partners with just enough travel to smooth out rough trails, with 130 mm front and 120 mm rear suspension. It comes equipped to go anywhere with a powerful Bosch Performance Line CX motor and a huge 800 Wh Removable Integrated Battery 2.0 (RIB 2.0), so you never have to limit your exploring

It's right for you if...

You want to explore without limits and you want a powerful e-bike to take you everywhere. You're looking for full assist to flatten long, punchy climbs and just enough trail-smoothing suspension to deliver confident handling in the rough. You want upgrades where they matter, like the clean, wireless shifts of a SRAM AXS T-Type transmission.

The tech you get

An Alpha Platinum Aluminium frame with a Bosch Performance Line motor CX (85 Nm, 250 W), a huge 800 Wh PowerTube RIB 2.0 removable integrated battery and Purion 200 controller. 130 mm front and 120 mm rear suspension from a FOX Rhythm 36 fork and a FOX Float Rhythm shock. Tubeless-ready wheels with puncture-resistant 2.4˝ tyres, a 12-speed wireless SRAM GX Eagle AXS T-Type transmission for clean shifts, a Bontrager Line dropper post and hydraulic disc brakes.

The final word

The Powerfly FS+ 8 is an electric mountain bike built for discovering what's beyond the next climb. It features just enough trail-smoothing suspension to boost comfort and confidence, and plenty of power to get you wherever you want to explore.

 



Specifications

Frame Alpha Platinum, Removable Integrated Battery (RIB 2.0), tapered headtube, internal routing, Motor Armour, rack and mudguard mounts, ABP, Boost 148, 120 mm travel
Fork Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 130mm travel
Shock Fox Float Rhythm, 2-position damper, 210x50 mm
Max compatible fork travel See service manual
Wheels
*Wheel front Size: S
Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 27.5"
Size: M , L , XL
Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 29"
*Wheel rear Size: S
Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12mm thru axle, 27.5''
Size: M , L , XL
Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12mm thru axle, 29''
Skewer rear Bontrager Switch thru-axle, removable lever
*Tyre Size: S
Bontrager Gunnison Pro XR, Tubeless-Ready, wire bead, 60 tpi, 27.5x2.40"
Size: M , L , XL
Bontrager Gunnison Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29x2.40"
Tyre part Bontrager TLR sealant, 180 ml/6 oz
Rim strip Bontrager TLR
Max tyre size Frame: 29x2.50" (S: 27.5x2.50"), Fork: see manufacturer
E-system
Battery Bosch PowerTube 800 Wh, smart system
Charger Bosch standard 4A, 230V, smart system
*Computer Size: S , M , L , XL
Bosch Kiox 300, smart system
Size: S , M , L , XL
Bosch LED remote, smart system
Motor Bosch Performance Line CX, 20 mph (25 km/h in Europe)
Drivetrain
Shifter SRAM AXS POD
Rear derailleur SRAM GX Eagle AXS, T-Type
Crank SRAM GX, 160 mm length
Cassette SRAM Eagle XS-1275, T-Type,10-52, 12-speed
Chain SRAM GX Eagle, T-Type, 12-speed
Pedal VP-536 nylon platform
Max. chainring size 1x: 38T
Components
Saddle Bontrager Verse P3, steel rails
*Seatpost Size: S
Bontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 31.6 mm, 310 mm length
Size: M , L , XL
Bontrager Line Dropper, 170 mm travel, MaxFlow, internal routing, 31.6 mm, 450 mm length
Handlebar Bontrager Comp, alloy, 31.8 mm, 40mm rise, 780 mm width
Grips Bontrager XR Trail Comp, nylon lock-on
Stem Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length
Head set FSA IS-2, 1-1/8" top, 1.5" bottom
Brake SRAM DB 8 4-piston hydraulic disc
Rotor size Max brake rotor sizes – Frame: 220 mm, min 180 mm, Fork: see fork manufacturer
Weight
Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).

We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.

Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.

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