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Trek Powerfly FS 4

Trek Powerfly FS 4
  • Color: Purple Flip/Trek Black
  • Color: Matte Gunmetal/Matte Black
$4,599.99
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Details

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.

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, a powerful Bosch Performance CX (250Wh, 75 Nm) motor that helps you sustain speeds of up to 20 mph or 32 km/h, and an ergonomic Purion controller. Plus, an SR Suntour 120mm suspension fork, 100mm of rear travel, a 10-speed Shimano drivetrain, powerful hydraulic disc brakes, 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 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
- The Purion controller has Walk Assist and an intelligent eMTB mode that automatically delivers the right amount of power based on your terrain
- The size S frame features 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

Wheel size:
Sizes X-Small – Small: 27.5-inch
Sizes Medium – X-Large: 29-inch

Specs

Motor Bosch Performance CX, magnesium motor body, 250 watt, 75 Nm, 20mph or 32km/h max assist
Battery Bosch PowerTube 500
Display Bosch Purion
Max Assisted Speed 20mph or 32km/h
Charger Bosch compact 2A (100-240V) charger
Frame Alpha Platinum Aluminum, Removable Integrated Battery (RIB), tapered head tube, Knock Block, internal routing, Motor Armor, magnesium rocker link, rack and fender mount, ABP, Boost148, 100mm travel
Fork SR Suntour XCR 34, air spring, LO R damper, hydraulic lockout, tapered steerer, oversized crown for eMTB, Boost110, 15mm bolt-on thru axle
Size XS, S: 100mm travel
Size M, L, XL: 120mm travel
Rear Shock SR Suntour Edge R, 190x45mm
Axles Front: 110 x 15mm
Rear: 148 x 12mm
Rims/Wheels Alex MD35, Tubeless Ready, 32-hole, 35mm width, Presta valve
Hubs Front: Bontrager sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle
Rear: Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12mm thru axle
Tires Bontrager XR3 Comp, wire bead, 30tpi, 2.30"
Crankset FSA Bosch CK-220, 165mm length
Chainrings 36T
Chain KMC X10, 10 speed
Rear Derailleur Shimano Deore M5120, long cage
Cassette/Rear Cogs Shimano Deore M4100, 11-46, 10 speed
Shifters Shimano Deore M4100, 10 speed
Handlebars Bontrager alloy, 31.8mm, 15mm rise
Tape/Grips Bontrager XR Trail Comp, nylon lock-on
Stem Bontrager alloy, 31.8mm, Blendr compatible, 7 degree
Brake Levers Tektro HD-M275 hydraulic disc
Brakes Tektro HD-M275 hydraulic disc, 203mm rotors
Pedals VP-536 nylon platform
Saddle Bontrager Arvada, steel rails, 138mm width
Seat Post TranzX JD-YSP18 dropper, internal routing, 31.6mm

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Purple Flip/Trek Black / X-Small / 27.5-inch 601842358122 1042888 POW37773779K
Purple Flip/Trek Black / Small / 27.5-inch 601842358115 1042889 POW36359822K
Purple Flip/Trek Black / Medium / 29-inch 601842358108 1042890 POW35764863K
Purple Flip/Trek Black / Large / 29-inch 601842358092 1042891 POW35479925K
Purple Flip/Trek Black / X-Large / 29-inch 601842358085 1042892 POW36333640K
Matte Gunmetal/Matte Black / X-Small / 27.5-inch 601842358221 1042878 POW41579150K
Matte Gunmetal/Matte Black / Small / 27.5-inch 601842358214 1042879 POW40789818K
Matte Gunmetal/Matte Black / Medium / 29-inch 601842358207 1042880 POW39730494K
Matte Gunmetal/Matte Black / Large / 29-inch 601842358191 1042881 POW39659637K
Matte Gunmetal/Matte Black / X-Large / 29-inch 601842358184 1042882 POW40924077K

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