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2025 Trek

FX Sport 4

A 700c carbon frame fitness bike with mid-range components and shimano hydraulic disc brakes.

Manufacturer Price

$1,799
Weight23.1 lbs  
FrameCarbon
SuspensionRigid
ForkCarbon
Wheels700c Aluminum
Drivetrain1 × 10
GroupsetCUES
BrakesShimano Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
FX Sport 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)

33 mph

FX Sport 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.

Sizing
XS

4'9" – 5'2"

SM

5'0" – 5'6"

MD

5'4" – 5'10"

LG

5'8" – 6'2"

XL

6'0" – 6'6"

Rider Fit Notes
  • 6'2", size XL, Just right
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

400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, fender mounts, flat mount disc, 135x5mm ThruSkew

Tire Clearance42c

ColorsMatte Onyx Carbon; Gloss Crimson / Matte Deep Smoke; Crystal White / Supernova

Fork

Carbon, hidden fender mounts, flat mount disc, 100x5mm thru-skew

Stem

Size: XS, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length; Size: S, M, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length; Size: L, XL, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 110mm length

Handlebar

Size: XS, S, Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 600mm width; Size: M, L, XL, Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 660mm width

Saddle

Bontrager H1

Seatpost

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

TypeRigid

Pedals

Bontrager City pedals

Grips

Bontrager Satellite IsoZone Plus, lock-on, ergonomic

Groupset
Rear Derailleur

Shimano CUES U6000 GS

Crank

Size: XS, S, Prowheel alloy, 42T narrow-wide ring, 170mm length; Size: M, L, XL, Prowheel alloy, 42T narrow-wide ring, 175mm length

Shifters

Shimano CUES U6000 w/optical gear display, 10 speed

Cassette

Shimano CUES LG300, LINKGLIDE, 11-48, 10 speed

Chain

Shimano LG500, 9/10/11 speed

Brakes

Shimano hydraulic disc, MT201 lever, UR300 caliper

TypeShimano Hydraulic Disc

Wheels
Rims

Bontrager Paradigm, Tubeless Ready, 32-hole, 21mm width, Presta valve

Front Hub

Formula CL-51 alloy, 100x5mm QR

Rear Hub

Formula CL-52 alloy, 135x5mm QR

Tires

Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40c

Disc Rotors

Shimano RT10, centerlock, 160mm

Rider Notes
Riders Also Viewed

First added August 31

Last updated June 27

Not listed for 351 days