Trek Powerfly FS 4 Gen 3

$4,749.99

Trek Powerfly FS 4 Gen 3

$4,749.99

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.

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.

Description

It’s right for you if…
You want to get out and explore more trails. You’re looking for an e-MTB with trail-smoothing full suspension and the reliable, leg-boosting power of an electric drive system made specifically for the demands of off-road riding.

The tech you get

A durable aluminum frame that fully encases a long-range 500Wh battery. The latest from Bosch with smart system Performance Line CX motor, capable of speeds up to 20MPH, including the new Bluetooth® LED remote for easy connectivity and all-in-one navigation and activity tracking through the eBike Flow app. Plus, a 120mm suspension fork, 100mm of rear travel, a 10-speed Shimano drivetrain, and a dropper post.

The final word

This full suspension e-MTB is comfortable, efficient, and fast on rough terrain. The powerful Bosch electric drive system makes it possible to tackle any climb you encounter and adventure farther than ever.

Why you’ll love it

For e-MTB, full suspension is a game-changer: it soaks up rugged terrain so you can ride the Bosch pedal-assist smart system to its full potential

Trek’s Removable Integrated Battery (RIB) system looks great and is super user-friendly: it fully hides the battery in the frame for protection, makes it easy to remove the battery without tools, and lets you mount a water bottle cage—even on full suspension e-MTBs

The dropper post lets you lower your saddle on the fly so it’s out of the way on descents

It comes equipped with Walk Assist and an intelligent e-MTB mode that automatically delivers the right amount of power based on your terrain

Powerfly FS frames feature a curved top tube that makes standing over the bike easier. Plus, Smart Wheel Sizing means you’ll get the fastest wheel that fits—29˝ wheels on larger frames, 27.5˝ wheels on smaller frames

Removable Integrated Battery
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’s the most convenient way to remove your battery for transport, security, or just easier charging.

Bosch Performance Line CX motor
Bosch Performance Line CX sets the standard for eMTB performance with up to 85Nm of torque and an intelligent eMTB mode with Extended Boost that automatically adjusts the amount of assist based on the terrain.

Bosch LED Remote
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.

Active Braking Pivot
Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.

Bosch eBike Flow app
The new eBike Flow app turns your ride into a personalized experience. Use it to customize your motor’s assist behavior, track your ride stats, and integrate your data with apps like Strava and Apple Health. There’s even handy features like navigation and service reminders.

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, 41mm offset, oversized crown for eMTB, Boost110, 15mm bolt-on thru axle, 100mm travel
Size: M , L , XL
SR Suntour XCR 34, air spring, LO R damper, hydraulic lockout, tapered steerer, 44mm offset, oversized crown for eMTB, Boost110, 15mm bolt-on thru axle, 120mm travel
Shock SR Suntour Edge R, 190mm x 45mm
Max compatible fork travel 120mm (XS & S: 520mm axle-to-crown, M & up: 545mm axle-to-crown)
Wheels
Hub front Bontrager sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle
Hub rear Bontrager Approved DC-3248, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12mm 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, 30tpi, 27.5×2.35”
Size: M , L , XL
Bontrager XR3 Comp, wire bead, 30tpi, 29×2.30”
Max tire size Frame: 29×2.40″ (XS & S: 27.5×2.60″), Fork: See manufacturer
Drivetrain
Shifter Shimano Deore M4100, 10 speed
Rear derailleur Shimano Deore M5120, long cage
Crank FSA Bosch CK-220, 36T ring, 165mm length
Chainring 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
Components
Saddle Bontrager Arvada, steel rails, 138mm width
*Seatpost Size: XS , S , M
TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length
Size: L , XL
TranzX JD-YSP18, 130mm travel, internal routing, 31.6mm, 425mm 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
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
Accessories
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
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).

Additional information

Brands

Trek

Frame type

Step-thru

Height range

Tiny riders and kids – Under 5'4", Average height riders – 5'5" to 6'1", Tall riders – Above 6'1"

Style

Mountain eBike

Rider size

Average size rider – Under 300lbs

Color

Lava/Trek Black, Matte/Gloss Black

Trek Powerfly FS 4 Gen 3
$4,749.99