Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2025 Trek FX Sport 4
Previous used estimate
$1,385 - $1,425
Actual value depends on condition, size, and local demand.
Value Guide market data · 2025 Trek FX Sport 4
12-month projected trend
14%
Direction and magnitude, not judgment
vs. category average
6%
Holds value better than category avg
Price over time - 2025 Trek FX Sport 4
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All FX model years
Compare FX Sport 4 models
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Overview
About this bike
FX Sport 4 is a carbon fiber fitness bike for riders who want the speed of a lightweight road bike with the comfort and control of a flat handlebar. The 1x drivetrain simplifies shifting without sacrificing gear range, making this high-performance bike perfect for everything from solo workouts to speedy group rides. IT'S RIGHT FOR YOU IF... You're ready to log big miles, and you prefer the feel of a flat handlebar to the drop bars that come stock on most road bikes. You prioritize comfort and performance equally, and want the simplicity a 1x drivetrain provides. THE TECH YOU GET A lightweight 400 Series OCLV Carbon frame and fork, a Shimano CUES 10-speed drivetrain with a wide-range cassette, Shimano hydraulic disc brakes for all-weather stopping power, a lightweight tubeless ready wheelset, wide, fast-rolling Bontrager GR1 Expert gravel tires, and a vibration-absorbing handlebar and ergonomic grips. THE FINAL WORD Fast, capable, comfortable. FX Sport 4 has a road-smoothing carbon frame and quality parts that will hold up over serious miles, including the simpler-shifting 1x drivetrain. WHY YOU'LL LOVE IT - The 1x drivetrain delivers a wide range of gearing with the simplicity of a single shifter - You get the superior ride quality of carbon without the bank-breaking price - On your left! This fitness bike is more than capable of taking on speedy group road rides - It's easy to accessorize with fenders, lights, and more!
Specifications
- Category
- Hybrid
- Component Hubs
- Front: Formula CL-51 alloy, 100x5mm QR Rear: Formula CL-52 alloy, 135x5mm QR
- Component Rims
- Bontrager Paradigm, Tubeless Ready, 32-hole, 21mm width, Presta valve
- Component Size
- Large, Medium, Small, X-Large, X-Small
- Component Stem
- Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90-110mm length
- Product Family
- FX
- Component Chain
- Shimano LG500, 9/10/11 speed
- Component Color
- Crystal White/Supernova, Gloss Crimson/Matte Deep Smoke, Matte Onyx Carbon
- Component Frame
- 400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, fender mounts, flat mount disc, 135x5mm ThruSkew
- Component Brakes
- Shimano hydraulic disc, MT201 lever, UR300 caliper
- Component Pedals
- Bontrager City pedals
- Component Rotors
- Shimano RT10, centerlock, 160mm
- Component Saddle
- Bontrager H1
- Component Crankset
- Prowheel alloy, 42T narrow-wide ring, 170-175mm length
- Component Seatpost
- Bontrager alloy, 27.2mm, 12mm offset, 330mm length
- Component Shifters
- Shimano CUES U6000 w/optical gear display, 10 speed
- Component Handlebar
- Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 600-660mm width
- Component Rear Tire
- Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40c
- Component Front Tire
- Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40c
- Component Tape Grips
- Bontrager Satellite IsoZone Plus, lock-on, ergonomic
- Component Wheel Size
- 700c
- Component Rear Derailleur
- Shimano CUES U6000 GS
- Component Cassette Freewheel
- Shimano CUES LG300, LINKGLIDE, 11-48, 10 speed
- Hubs
- Front: Formula CL-51 alloy, 100x5mm QR Rear: Formula CL-52 alloy, 135x5mm QR
- Rims
- Bontrager Paradigm, Tubeless Ready, 32-hole, 21mm width, Presta valve
- Crankset
- Prowheel alloy, 42T narrow-wide ring, 170-175mm length
- Pedals
- Bontrager City pedals
- Chain
- Shimano LG500, 9/10/11 speed
- Seatpost
- Bontrager alloy, 27.2mm, 12mm offset, 330mm length
- Saddle
- Bontrager H1
- Handlebar
- Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 600-660mm width
- Rear Derailleur
- Shimano CUES U6000 GS
- Rear Tire
- Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40c
- Stem
- Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90-110mm length
- Brakes
- Shimano hydraulic disc, MT201 lever, UR300 caliper
- Frame
- 400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, fender mounts, flat mount disc, 135x5mm ThruSkew
- Shifters
- Shimano CUES U6000 w/optical gear display, 10 speed
- Tape/Grips
- Bontrager Satellite IsoZone Plus, lock-on, ergonomic
- Color
- Matte Onyx Carbon
- Size
- X-Small
- Wheel Size
- 700c
- Cassette/Freewheel
- Shimano CUES LG300, LINKGLIDE, 11-48, 10 speed
- Rotors
- Shimano RT10, centerlock, 160mm
- Front Tire
- Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40c
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.