2025 Trek Powerfly FS+ 4 Gen 4 – Electric Mountain Bike
Specifications
Specification |
Details |
Model |
Powerfly FS+ 4 Gen 4 |
Vehicle Category |
Electric Mountain Bike |
Application |
Trail riding, alpine adventures, all-mountain |
Starting Price (2025) |
$5,499.99 USD |
Color Options |
Pennyflake/Black Olive, Grey-Black, Orange-Greendark |
Sizes |
S (27.5" wheel), M (29" wheel), L (29" wheel), XL (29" wheel) |
Frame & Drivetrain
Specification |
Details |
Frame |
Alpha Platinum Aluminum, internal storage, 120mm travel, 148x12mm thru axle |
Fork |
RockShox Recon Silver, Solo Air, 130mm travel, 42mm offset (S), 46mm offset (M, L, XL), 15x110mm thru axle |
Rear Shock |
RockShox Deluxe Select R, 205x50mm, 120mm travel |
Drivetrain Compatibility |
Shimano CUES, 1x10-speed, mechanical |
Dropouts |
15x110mm thru axle (F), 148x12mm thru axle (R) |
Crank |
Shimano CUES U6000, 32T, 170mm (S), 175mm (M, L, XL) |
Chain |
Shimano CUES LG500, 10/11-speed |
Rear Derailleur |
Shimano CUES U6000, 10-speed, mechanical |
Shifters |
Shimano CUES U6000, 10-speed, mechanical |
Cassette |
Shimano CUES LG400, 11-46T, 10-speed |
Components & Features
Specification |
Details |
Seating |
Bontrager Arvada, 138mm width |
Fuel Type |
Electric (Bosch Performance Line CX motor) |
Cargo Capacity |
Internal storage (Bontrager BITS bag included), downtube water bottle mounts, rack and fender mounts |
Wheels/Tyres |
Bontrager Line TLR 30, tubeless ready, 29x2.60" (S: 27.5x2.60"), Bontrager XR5 Team Issue |
Wheel Size |
29" (S: 27.5") in |
Brakes |
Tektro Gemini SL, 4-piston hydraulic disc, 203mm rotor (F), 180mm rotor (R) |
Brake Levers |
Tektro Gemini SL, hydraulic |
Handlebar |
Bontrager alloy, 31.8mm, 15mm rise, 750mm width |
Stem |
Bontrager alloy, 31.8mm, 7 degree, 50mm length |
Headset |
Semi-integrated, sealed cartridge bearing, 1-1/8" top, 1.5" bottom |
Saddle |
Bontrager Arvada, 138mm width |
Seatpost |
TranzX JD-YSP39, 100mm travel (S), 150mm travel (M), 170mm travel (L, XL), 34.9mm |
Seatpost Clamp |
Integrated, internal |
Grips |
Bontrager XR Trail Comp, nylon lock-on |
Front Hub |
Bontrager alloy, sealed bearing, 6-bolt, 15x110mm thru axle |
Rear Hub |
Bontrager alloy, sealed bearing, 6-bolt, Shimano 10/11-speed freehub, 148x12mm thru axle |
Rims |
Bontrager Line TLR 30, tubeless ready, 29mm width (S: 27.5mm width) |
Spokes |
14g stainless steel |
Exterior Features |
Internal storage (Bontrager BITS bag included), downtube water bottle mounts, rack and fender mounts |
Motor |
Bosch Performance Line CX, 85Nm, 250W continuous power, 28mph/45kph max assist (Class 3) |
Battery |
Bosch PowerTube 625Wh, integrated, removable |
Controller |
Bosch LED remote, 4 assist modes (Eco, Tour, eMTB, Turbo), walk assist |
Charger |
Bosch 4A charger |