Powerfly FS 4 is a full suspension electric mountain bike built to tackle rugged trail adventures. The plush suspension setup soaks up rough terrain, and the powerful Bosch electric drive system boosts your capacity to crush climbs and mile after mile of singletrack.

Specifications

Frameset

Frame	Alpha Platinum Aluminum, Removable Integrated Battery (RIB), tapered head tube, internal routing, Motor Armor, rocker link, rack and fender mount, ABP, Boost148, 100mm travel
*Fork	Size: XS , S SR Suntour XCR 34, air spring, LO R damper, hydraulic lockout, tapered steerer, 44 mm offset, oversized crown for eMTB, Boost110, 15 mm bolt-on thru axle, 100 mm travel
*Fork	Size: M , L , XL SR Suntour XCR 34, air spring, LO R damper, hydraulic lockout, tapered steerer, 44 mm offset, oversized crown for eMTB, Boost110, 15 mm bolt-on thru axle, 120 mm travel
Shock	SR Suntour Edge R, 190 mm x 45 mm
Max compatible fork travel	120mm (XS & S: 520mm axle-to-crown, M & up: 545mm axle-to-crown)

Hub front	Bontrager sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle
Hub rear	Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12 mm thru axle
Skewer rear	Bontrager Switch thru axle, removable lever
Rim	Alex MD35, tubeless compatible, 32-hole, 35mm width, Presta valve
*Tire	Size: XS , S Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.35"
*Tire	Size: M , L , XL Bontrager XR3 Comp, wire bead, 30 tpi, 29x2.30"
Max tire size	Frame: 29x2.40" (XS & S: 27.5x2.60"), Fork: See manufacturer

Shifter	Shimano Deore M4100, 10 speed
Rear derailleur	Shimano Deore M5120, long cage
Crank	FSA Bosch CK-220, 36T ring, 165 mm length
Chain ring	FSA, 36T, steel
Cassette	Shimano Deore M4100, 11-46, 10 speed
Chain	KMC X10, 10 speed
Pedal	VP-536 nylon platform
Max chainring size	1x: 46T, min 34T

Saddle	Bontrager Arvada, steel rails, 138 mm width
*Seatpost	Size: XS , S , M TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length
*Seatpost	Size: L , XL TranzX JD-YSP18, 130mm travel, internal routing, 31.6 mm, 425 mm length
Handlebar	Bontrager alloy, 31.8mm, 15mm rise, 720mm width
Grips	Bontrager XR Trail Comp, nylon lock-on
*Stem	Size: XS , S Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 60mm length
*Stem	Size: M , L , XL Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 70mm length
Headset	FSA IS-2
Brake rotor	Tektro, 6-bolt, 203mm
Brake Set	Tektro HD-M275 hydraulic disc
Rotor size	Max brake rotor sizes: Front see fork manufacturer, rear 203mm

Battery	Bosch PowerTube 500Wh, smart system
Charger	Bosch standard 4A, 110V, smart system
Controller	Bosch Intuvia 100, smart system
Motor	Bosch Performance Line CX, smart system, magnesium motor body, 85 Nm
Computer	Bosch LED remote, smart system

Weight	M - 24.64 kg / 54.33 lbs
Weight limit	This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).

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2023 Trek Powerfly FS 4

Specifications