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**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. An IsoSpeed decoupler smooths out rough roads and the 1x11 drivetrain simplifies shifting without sacrif
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. An IsoSpeed decoupler smooths out rough roads and the 1x11 drivetrain simplifies shifting without sacrificing gear range, making this high-performance bike perfect for everything from solo workouts to speedy group rides.
| Frame | 400 series OCLV carbon, IsoSpeed, internal routing, 3s chain keeper, DuoTrap S-compatible, mudguard mounts, flat-mount disc, 142x12 mm thru axle |
|---|---|
| Fork | FX Carbon, threadless alloy steerer, hidden mudguard mounts, flat-mount disc, 405 mm axle-to-crown, 100x12 mm thru axle |
| Hub front | Formula alloy, CenterLock disc, 100x12 mm thru-axle |
|---|---|
| Skewer front | Bontrager Switch thru axle, removable lever |
| Hub rear | Shimano RXC400, CenterLock, Shimano 11-speed freehub, 142x12 mm thru axle |
| Skewer rear | Bontrager Switch thru axle, removable lever |
| Rim | Bontrager Tubeless Ready Disc, 32-hole, Presta valve |
| Spokes | 14g stainless steel |
| Tire | Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x32 c |
| Max tire size | 700x35mm without fenders, 700x32mm with fenders |
| Shifter | Shimano RS700, 11 speed |
|---|---|
| Rear derailleur | Shimano GRX RX812, long cage, 42T max cog |
| *Crank | Size: XS, S Shimano GRX RX600, 40T ring, 170 mm length |
| Size: M, L, XL Shimano GRX RX600, 40T ring, 175 mm length |
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| Bottom bracket | Shimano BB71, 86.5mm, PressFit |
| Cassette | Shimano SLX M7000, 11-42, 11 speed |
| Chain | Shimano HG601 |
| Pedal | Wellgo M141, resin body, alloy cage |
| Saddle | Bontrager H1 |
|---|---|
| Seatpost | Bontrager alloy, 27.2mm, 12mm offset, 330mm 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 clamp, Blendr-compatible, 7-degree, 100 mm length |
|
| Size: L, XL Bontrager Elite, 31.8 mm clamp, Blendr-compatible, 7-degree, 110 mm length |
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| Headset | 1-1/8" threadless, sealed cartridge bearings |
| Brake | Shimano hydraulic disc, MT201 lever, UR300 caliper |
| Brake rotor | Shimano RT10, CenterLock, 160 mm |
| Weight | M - 9.55 kg / 21.06 lbs |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |
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, colors, materials, and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.
Bike and frame weights are based off pre-production painted frames at time of publication. Weights may vary in final production.
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