Trek FX Sport 4
FX Sport 4 is a carbon fibre 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.
*Please note – spec applies to all sizes unless listed separately
Frameset
| Frame | 400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, mudguard mounts, flat mount disc, 135x5 mm ThruSkew |
|---|---|
| Fork | Carbon, hidden mudguard mounts, flat mount disc, 100x5 mm thru-skew |
Wheels
| Hub front | Formula CL-51 alloy, 100x5 mm QR |
|---|---|
| Skewer front | 135x5 mm bolt-on |
| Hub rear | Formula CL-52 alloy, 135x5 mm QR |
| Skewer rear | 169x5 mm bolt-on |
| Rim | Bontrager Paradigm, Tubeless Ready, 32-hole, 21 mm width, Presta valve |
| Tyre | Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40 mm |
| Max tyre size | 700x42mm without mudguards, 700x40mm with mudguards |
Drivetrain
| Shifter | Shimano Deore M5100, 11-speed |
|---|---|
| Rear derailleur | Shimano Deore M5100, long cage, Shadow Plus |
| Crank | Prowheel alloy, 42T narrow-wide ring, 175 mm length |
| Cassette | Shimano Deore M5100, 11-51, 11-speed |
| Chain | KMC X11, 11-speed |
| Pedal | Bontrager City pedals |
| Max. chainring size | 1x: 44T |
Components
| Saddle | Bontrager H1 |
|---|---|
| Seatpost | Bontrager alloy, 27.2 mm, 12 mm offset, 330 mm length |
| *Handlebar |
Size: XS, S Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 600 mm width |
|
Size: M, L, XL Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 660 mm width |
|
| Grips | Bontrager Satellite IsoZone Plus, lock-on, ergonomic |
| *Stem |
Size: XS Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length |
|
Size: S, M Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 100 mm length |
|
|
Size: L, XL Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 110 mm length |
|
| Brake | Shimano hydraulic disc, MT201 lever, UR300 calliper |
| Brake rotor | Shimano RT10, CenterLock, 160 mm |
| Rotor size | Max brake rotor sizes: 160mm front & rear |
Weight
| Weight | M - 10.74 kg / 23.68 lbs |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb). |
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. The prices shown are the manufacturer's suggested retail prices.
Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.
Frequently Asked Questions
Trek District+ 4 – Substance Cycles
Frog
- Ridgeback