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2025 Trek

FX 2 Gen 4

A 700c aluminum frame fitness bike with mid-range components and tektro hydraulic disc brakes.
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Manufacturer Price

$749$849
Weight26.0 lbs  
FrameAluminum
SuspensionRigid
ForkAluminum
Wheels700c Aluminum
Drivetrain1 × 9
GroupsetCUES
BrakesTektro Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
FX 2 Gen 4
Other Fitness bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

31 mph

FX 2 Gen 4

35 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full FX model range

View Comparison
Sizing
40cm

3'11" +

🐐 Estimated

Rider Fit Notes

None yet.

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Price History
Reviews
BikeRadar
Trek FX 3 Disc Equipped review | BikeRadar

Feb 2024 · Simon Withers

Single-ring hybrid with Shimano Deore and all the extras as standard

Highs
  • Lights and kickstand included

  • Full length fenders

  • Very good contact points

  • Top notch braking

  • Shimano deore gearing

Lows
  • Underpowered lights

  • Only two pairs of bottle bosses

  • Twin stem face plates

  • No bar ends

Read Review

Cycling News
Trek FX 2 Disc Equipped review: Unspectacular but effective

Sep 2022 · Benjamin Page

The Trek FX 2 Disc is a versatile all-rounder with surprising levels of comfort and stability

Highs
  • The frame has a great balance between responsiveness and comfort

  • Equipped for night riding, bikepacking or commuting

  • Can carry a decent amount of weight

  • Stable ride for long distances

Lows
  • Would need a drivetrain upgrade to become a serious fitness bike

  • On the heavy side for a rigid frame

Read Review

Geometry
Specs
Build
Frame

Alpha Gold Aluminum, internal cable routing, rack & fender mounts, post mount disc, kickstand mount, 135x5mm QR

Tire Clearance40c

ColorMatte Trek Black

Fork

FX alloy, flat-mount disc, rack mounts, 410mm axle-to-crown, ThruSkew 5mm QR

Bottom Bracket

Sealed cartridge, 68mm

Stem

Bontrager Blendr Stem, 31.8x90mm, 7 Degree Rise, Black - XS, S, M: Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 90mm length; L, XL: Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 100mm length

Handlebar

Bontrager Approved Lowriser, 31.8x600mm, 15mm Rise, 9D Bend/4D Upsweep, Black - XS, S, M: Bontrager alloy, 31.8mm, 15mm rise, 600mm width; L, XL: Bontrager alloy, 31.8mm, 15mm rise, 660mm width

Saddle

Bontrager Sport

Seatpost

Bontrager alloy, 27.2mm, 12mm offset, 330mm length

TypeRigid

Pedals

Bontrager City pedals

Grips

Bontrager Satellite

Groupset
Rear Derailleur

Shimano CUES U4000

Crank

ProWheel Pro alloy, 40T narrow-wide steel ring, 170mm length

Shifters

Shimano U4000, 9 speed

Cassette

Shimano LINKGLIDE LG300, 11-46, 9 speed

Chain

Shimano LG500, 9/10/11 speed

Brakes

Tektro HD-R280 hydraulic disc, 160mm rotor

TypeTektro Hydraulic Disc

Wheels
Rims

Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve

Front Hub

Formula DC-20, alloy, 6-bolt, 100x5mm

Rear Hub

Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm

Tires

Bontrager H2 Comp, wire bead, 30 tpi, 700x35mm

Disc Rotors

Tektro wave, 6-bolt, 160mm

Rider Notes
Riders Also Viewed

First added July 5

Last updated May 30