Image of Trek Powerfly FS 4
2021

Trek Powerfly FS 4

Trek Powerfly FS 2021

4599.99

E-Mountain Cross Country

Colour / Matte Gunmetal/Matte Black, Purple Flip/Trek Black

Size / XS, SM, MD, LG, XL

Weight / 54 lb 14.0 oz (24,890 g)

Manufacturer Website

At a glance

The 2021 Trek Powerfly FS 4 is a E-Mountain and Cross Country Aluminium / Alloy mountain bike. It sports 29" and 27.5" wheels, is priced at $4,600 USD, comes in a range of sizes, including XS, SM, MD, LG, XL, has SR Suntour suspension and a Shimano drivetrain. The bike is part of Trek's Powerfly FS range of mountain bikes. As a pedal-assisted e-mountain bike, the Trek Powerfly FS 4 is powered by a Bosch Performance CX, magnesium motor body, 250W, 75 Nm torque motor and a Bosch PowerTube 500, integrated, removable, 500 Wh battery.

XS/SM get 27.5″ wheels; MD/LG/XL get 29″ wheels, Removable Integrated Battery (RIB) system, Internal cable routing, Weight given for MD frame with tubes, Includes Bosch compact 2A (100-240V) charger, Includes rack and fender mounts, Internally wired to accept optional front and rear lights, Integraged speed sensor at rear dropout

Where To Buy

Reviews

Specifications

Frameset
  • Frame
    Alpha Platinum Aluminum, magnesium rocker link, Motor Armor
  • Fork
    SR Suntour XCR 34, air spring, LO R damper, hydraulic lockout, oversized eMTB crown, 41mm offset (XS/SM), 44mm offset (MD/LG/XL), XS: 100mm, SM/MD/LG/XL: 120mm
  • Shock
    SR Suntour Edge R, 190mm x 45mm
  • Motor
    Bosch Performance CX, magnesium motor body, 250W, 75 Nm torque
  • Battery
    Bosch PowerTube 500, integrated, removable, 500 Wh
Wheels
  • Hubs
    Bontrager, sealed bearing, 6-bolt rotor mounts, 32 hole, 15x110mm Boost front, 12x148mm Boost rear with HG driver
  • Wheels
    Alexrims MD35, tubeless ready, 32 hole, 35mm width
  • Wheel Size
    29" 27.5"
  • Spokes
    14g, stainless steel
  • Tires
    Bontrager XR3 Comp, wire bead, 30 TPI, 27.5" x 2.35" (XS/SM) or 29" x 2.3" (MD/LG/XL)
Drivetrain
  • Chain
    468mm, 470mm, None, FSA, 36 tooth, KMC X10, 10-speed
  • Crank
    FSA Bosch CK-220, 165mm length
  • Bottom Bracket
    332mm (24mm drop), 335mm (39mm drop)
  • Rear Derailleur
    Shimano Deore M5120, 10-speed, long cage
  • Shifters
    Shimano Deore M4100, 10-speed
Components
  • Brakeset
    Tektro HD-M275, 2-piston, Tektro 6-bolt 203mm rotors, Tektro HD-M275
  • Handlebar
    Bontrager alloy, 31.8mm clamp diameter, 15mm rise, 720mm width
  • Saddle
    Bontrager Arvada, steel rails, 138mm width
  • Seatpost
    TranzX JD-YSP18 dropper, Drop: 100mm (XS/SM/MD), 130mm (LG/XL), 31.6mm, Single bolt, 31.6mm, Single bolt
  • Stem
    Bontrager alloy, 31.8mm bar clamp, Blendr compatible, 7° rise, Length: 60mm (XS/SM), 70mm (MD/LG/XL)
  • Grips
    Bontrager XR Trail Comp, nylon lock-on

FAQ

Q: How much is a 2021 Trek Powerfly FS 4?

A 2021 Trek Powerfly FS 4 is typically priced around $4,600 USD when new. Be sure to shop around for the best price, and also look to the used market for a great deal.

Q: Where to buy a 2021 Trek Powerfly FS 4?

The 2021 Trek Powerfly FS 4 may be purchased directly from Trek.

Q: How much does a 2021 Trek Powerfly FS 4 weigh?

A 2021 Trek Powerfly FS 4 weights 54 lb 14.0 oz (24,890 g).

Q: What size wheels does the 2021 Trek Powerfly FS 4 have?

The 2021 Trek Powerfly FS 4 has 29" and 27.5" wheels.

Q: What size 2021 Trek Powerfly FS 4 should I get?

The 2021 Trek Powerfly FS 4 comes in sizes XS, SM, MD, LG, XL. After measuring your height, use the size chart below to find the typical Trek Powerfly FS 4 size for your height. Remember that these sizes are a general guide and bike sizes can vary between riders and bikes. The best way to find your size is to go for a test ride.

Rider Height (cm)Rider Height (in)Frame Size
148cm - 158cm4'10" - 5'2"XS
158cm - 168cm5'2" - 5'6"S
168cm - 178cm5'6" - 5' 10"M
178cm - 185cm5'10" - 6'1"L
185cm - 193cm6'1" - 6'4"XL
193cm - 198cm6'4" - 6'6"XXL

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