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2026 Trek

Powerfly FS+ 4 Equipped Gen 4

A 27.5″ / 29″ aluminum frame full suspension trail e-bike with mid-range components.
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Manufacturer Price

€4,799($5,471)
Weight58.4 lbs  
FrameAluminum
SuspensionFull, 120 / 130mm
ForkRockShox Recon Silver RL
ShockRockShox Deluxe Select
Wheels27.5″ / 29″ Aluminum
Drivetrain1 × 10
GroupsetCUES
MotorBosch 600W 85Nm mid-drive
BatteryBosch 600Wh
BrakesTektro Gemini Hydraulic Disc
SeatpostDropper
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Powerfly FS+ 4 Equipped Gen 4
Other Trail bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

28 mph

Powerfly FS+ 4 Equipped Gen 4

26 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full Powerfly model range

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Sizing
15.5"

5'1" – 5'6"

17.5"

5'4" – 5'11"

19.5"

5'9" – 6'3"

21.5"

6'1" – 6'5"

Rider Fit Notes

None yet.

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Price History
Geometry
Specs
Build
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

BB StandardBosch, Press Fit

Hanger StandardUDH

Tire Clearance2.5"

ColorsMercury / Dark Web; Pennyflake / Black Olive

Fork

RockShox Recon Silver, Solo Air spring, Motion Control damper, lockout, tapered steerer, 42 mm offset, Boost110, Maxle Stealth, mudguard mounts, 130 mm travel

Travel130mm

Spring TypeAir

Shock

RockShox Deluxe Select R, 210x50 mm

Travel120mm

Bottom Bracket

Bosch, press-fit

Headset

FSA IS-2, 1-1/8" top, 1.5" bottom

Stem

Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length

Handlebar

Bontrager Comp, alloy, 31.8 mm, 40mm rise, 780 mm width

Saddle

Bontrager Commuter Comp

Seatpost

Bontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 31.6mm, 310mm length - S : Bontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 31.6 mm, 310 mm length; M , L , XL : Bontrager Line Dropper, 170 mm travel, MaxFlow, internal routing, 31.6 mm, 450 mm length

TypeDropper

Pedals

VP-536 nylon platform

Grips

Bontrager XR Trail Comp, nylon lock-on

Groupset
Rear Derailleur

Shimano CUES U6000 GS

Crank

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

Shifters

Shimano U6000, 10-speed

Cassette

Shimano CUES LG300, LINKGLIDE, 11-48, 10-speed

Chain

Shimano LG500, 9/10/11-speed

Brakes

Tektro Gemini SL 4 piston hydraulic brake

TypeTektro Gemini Hydraulic Disc

Wheels
Rims

Bontrager Line TLR 30 rim, 32H, 28mm hook bead, Black/Black - S , M , L , XL : Bontrager Line TLR 30, Tubeless-Ready, 32-hole, Presta valve; S , M , L , XL : Bontrager Line TLR 30, Tubeless-Ready, 28-hole, Presta valve

Spokes

DT Swiss Champion, J-Bend, 14g Stainless, 276mm, Black - S , M , L , XL : 14 g stainless steel, black; S , M , L , XL : 14g stainless

Front Hub

Shimano TC500 alloy, CentreLock, 110x15 mm thru axle

Rear Hub

Shimano TC500 alloy, CentreLock, 148x12 mm thru axle

Tires

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

Disc Rotors

Tektro, CentreLock, 203 mm

Electric Components
Motor

Bosch Performance Line CX (Europe and APAC: 25 km/h, US and ROW: 20 mph / 32 km/h)

Battery

Bosch PowerTube 600 Wh, smart system

Display

Bosch Purion 200

Charger

Bosch standard 2A, 230V, smart system

Accessories
Lights

Supernova Mini 3 pure, LED, headlight, 12V, 500 Lumen, no switch, Supernova part number W-MINI3E-MBLK-OE - S , M , L , XL : Supernova Mini 3 pure, LED, headlight; S , M , L , XL : Supernova TL3 Mini, LED

Fenders

Trek Powerfly+ 27.5'' custom fender set, sold as a front and rear pair only, black, hardware included - S : Trek Powerfly 27.5" custom fender; M , L , XL : Trek Powerfly 29" custom fender

Racks

MIK-compatible alloy rear rack

Rider Notes
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First added July 1

Last updated June 23