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The Powerfly FS 4 Gen 4 is a full-suspension electric mountain bike with a tough aluminium frame, 130mm/120mm RockShox suspension, and an 800Wh battery.
The Powerfly FS 4 Gen 4 is a full-suspension electric mountain bike with a tough aluminium frame, 130mm/120mm RockShox suspension, and an 800Wh battery.
Trek

Trek Powerfly+ FS 4 800 eMountain Bike in Fury Red/Dark Star Gloss

£3,700.00
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In the unlikely event that you are dissatisfied with your purchase please feel free to return your goods within 30 days of the purchase date for a full exchange or refund. Any item (excluding food and underwear) can be returned to us for any reason provided it is returned in ‘showroom condition’, with its original packaging, tags and a valid receipt/delivery note.

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If you purchased an item in one of our stores, you may return the items to either of our stores.

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  1. You should always keep proof of postage and we advise you to use a ‘signed for service’ when returning goods.
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South Downs Bikes
Internet Department
28 West Street
Storrington
West Sussex
RH20 4EE

If you wish to return your bike to us please keep it in the box it arrived in and contact us and we will arrange a collection.

Please note the following:

  • a) If we have sent you the incorrect bicycle, we will cover the cost of collection and delivery of the correct model.
  • b) If we have delivered the bicycle you ordered, but upon inspection you decide it is not the bike for you, we will charge you £50.00 for the collection.

Please do not ride the bike as a full refund cannot be given if the bike has been used or damaged.

Trek Powerfly+ FS 4 800 eMountain Bike in Fury Red/Dark Star Gloss

Season:2027

Brand:Trek

Code:79832RED

The Powerfly FS 4 Gen 4 is a full-suspension electric mountain bike built for getting out there. It pairs a tough aluminium frame with 130mm front and 120mm rear RockShox suspension to smooth out the rough stuff, while a Bosch motor and powerful 800Wh battery give you the boost to explore farther and climb longer.

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 is the most convenient way to remove your battery for transport, security or just easier charging. 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.

The Bosch smart system LED remote lets you easily change assist modes, activate walk mode or turn on optional lights. The bright LEDs are easy to see in any light, and show you your battery level and assist mode at a glance. The Bosch Kiox 300 is tough, compact and easy to read with a full-colour display, keeping ride data like rider power, motor output, speed and remaining range visible. The Powerfly Equipped gives you maximum utility thanks to pre-installed accessories, including a kickstand, front and rear lights, mudguards and a rear rack.

The eBike Flow app turns your ride into a personalised experience, allowing you to customise your motor's assist behaviour, track ride stats and integrate data with apps like Strava and Apple Health. Shimano CUES offers a new foundation for versatility and durability, featuring LINKGLIDE technology engineered for incredible durability while delivering smooth and decisive shifting. Starting in 2024, Trek began replacing high-emission aluminium with low-emission aluminium made with renewable energy, driving a major drop in the manufacturing footprint.

Features:

  • Removable Integrated Battery (RIB)
  • Bosch Performance Line CX motor
  • Bosch LED remote
  • Bosch Kiox 300 display
  • Pre-installed accessories: kickstand, lights, mudguards and rear rack
  • eBike Flow app integration
  • Shimano CUES drivetrain with LINKGLIDE technology
Technical Information
  • Frame
    Alpha Platinum Aluminium, Removable Integrated Battery (RIB 2.0), tapered headtube, guided internal routing, Motor Armor, 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, 210x50mm
  • Hub front
    Shimano TC500 alloy, CentreLock, 110x15 mm thru axle
  • Hub rear
    Shimano TC500 alloy, CentreLock, 148x12 mm thru axle
  • Rim
    Bontrager Kovee, double-wall, Tubeless-Ready, 28-hole/32-hole, 23 mm width, Presta valve
  • Spokes
    14 g stainless steel, black
  • Tyre
    Bontrager Gunnison Elite XR, Tubeless Ready, wire bead, 60 tpi, 27.5x2.40" / 29x2.40"
  • Max tyre size
    Frame: 29x2.50" (S: 27.5x2.50"), Fork: see manufacturer
  • Battery
    Bosch PowerTube 800 Wh, smart system
  • Charger
    Bosch standard 2A, 230V, smart system
  • E-bike classification
    Class 1
  • Max assist speed
    15.5 mph
  • Shifter
    Shimano U6000, 10-speed
  • Rear derailleur
    Shimano CUES U6000 GS
  • Crank
    FSA Bosch CK-220, 36T ring, 165 mm length
  • Chainring
    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
  • Saddle
    Bontrager Verse P3, steel rails
  • Seatpost
    TranzX JD-YSI34, 100-170 mm travel, internal routing, 31.6 mm, 350-500 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
  • Head set
    FSA IS-2, 1-1/8" top, 1.5" bottom
  • Brake
    Tektro HD-M5140 hydraulic disc
  • Brake rotor
    Tektro, CentreLock, 203 mm
  • Rotor size
    Max brake rotor sizes – Frame: 220 mm, min 180 mm, Fork: see fork manufacturer
  • Weight
    25.50 kg / 56.22 lb
  • Weight limit
    300 pounds (136 kg)
Sizing Information
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