Trek Powerfly FS+ 4 electric mountain bike in Silver, Bosch Motor

Trek Powerfly FS+ 4 800Wh Gen 4 2026 E-MTB

5336915

£4,150.00
/
  • Built & checked by our Trek-trained workshop
  • Ready-to-ride delivery or free in-store collection
  • UK warranty support from a real local bike shop
  • Expert advice before & after purchase — no call centres
  • Not sure? Read our Powerfly Buyer Guide
Size
Colour

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Not sure what Motor suits your E-Bike needs? Click Here to see our in-depth, yet easy to understand guide to help you figure out which motor is the best for you!

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Approved Used Promise

Known history · Fully checked · 3-month / 1,000-mile warranty

Why Approved Used beats private sales →

The Trek Powerfly FS+ 4 800Wh Gen 4 builds on the standard FS+ 4 by adding extended battery range for longer days in the saddle. It combines full-suspension comfort with the freedom to ride further between charges.

The larger 800Wh battery makes this model ideal for riders planning longer off-road loops, exploring further afield or riding with higher assistance levels. It’s a strong option for comfort-focused riders who don’t want range anxiety.

IT’S RIGHT FOR YOU IF…

You want all the comfort and control of the FS+ 4, but with extra range for longer rides. You enjoy extended off-road adventures and want the reassurance of a bigger battery.

This is a great choice for riders who value distance, flexibility and relaxed exploration over aggressive trail riding.

THE TECH YOU GET…

The Alpha Platinum Aluminium full-suspension frame and Bosch Performance Line CX motor are paired with a high-capacity 800Wh PowerTube battery, delivering excellent range for longer rides.

Comfort-focused suspension, reliable drivetrain components and hydraulic disc brakes ensure confident performance across mixed terrain.

THE FINAL WORD…

The Powerfly FS+ 4 800Wh is all about comfort and range. It’s ideal for riders who want to go further off-road without worrying about charging — and our Powerfly Buyer Guide shows how it compares across the FS lineup.

Specifications

*Frame Alpha Platinum Aluminium, Removable Integrated Battery (RIB 2.0), tapered headtube, guided internal routing, Motor Armor, angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate, 34.9 mm seat tube, ABP, UDH, rack and mudguard mounts, Boost 148, 120 mm travel
*Fork RockShox Recon Silver, Solo Air spring, Motion Control damper, lockout, tapered steerer, 42 mm offset, Boost110, Maxle Stealth, mudguard mounts, 130 mm travel

*Shock RockShox Deluxe Select R, 210x50 mm

Wheels
Specifications
*Front Hub Shimano TC500 alloy, CentreLock, 110x15 mm thru axle

*Rear Hub Shimano TC500 alloy, CentreLock, 148x12 mm thru axle

*Rear Skewer Bontrager Switch thru-axle, removable lever
*Rim Size: M , L , S , XL
Bontrager Line TLR 30, Tubeless-Ready, 28-hole, Presta valve
Size: M , L , S , XL
Bontrager Line TLR 30, Tubeless-Ready, 32-hole, Presta valve
*Spokes 14 g stainless steel, black

*Tire 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"
*Tire 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
Specifications
*Battery Bosch PowerTube 800 Wh, smart system

*Charger Bosch standard 2A, 230V, smart system

*Computer Bosch Purion 200

*Motor Bosch Performance Line CX, 20 mph / 32 km/h max assist (25 km/h max assist in EU and APAC)

Drivetrain
Specifications
*Shifter Shimano U6000, 10-speed

*Rear Derailleur Shimano CUES U6000 GS

*Crank FSA Bosch CK-220, 36T ring, 165 mm length

*Chain Ring FSA, 36T, steel
*Cassette Shimano CUES LG300, LINKGLIDE, 11-48, 10-speed

*Chain Shimano LG500, 9/10/11-speed

*Pedal VP-536 nylon platform
Max. chainring size 1x: 38T
Components
Specifications
*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 Trek Line Comp, nylon lock-on

*Stem Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length
*Headset FSA IS-2, 1-1/8" top, 1.5" bottom

*Brake Tektro Gemini SL 4 piston hydraulic brake

*Brake Rotor Tektro, CentreLock, 203 mm

Rotor size Max brake rotor sizes – Frame: 220 mm, min 180 mm, Fork: see fork manufacturer
Accessories
Specifications
*Fender Trek 27.5" custom fender
Weight
Specifications
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.

Personalised Bike Consultation

Not sure which model is perfect for you? Our expert team at All Ride Now in Midhurst, West Sussex is here to help you choose with confidence.

  • Will you be riding mainly on or off-road?
  • Do you prefer an upright or sportier riding position?
  • Are you looking for longer range, lighter weight, or a more comfortable feel?

Through a friendly consultation – in-store, by phone, live chat or email – we’ll help you narrow down your options and find the bike that best fits your needs.

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