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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.
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.
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 prioritise comfort and performance equally, and want the simplicity that a 1x drivetrain provides.
A lightweight 400 Series OCLV Carbon frame and fork, a Shimano Deore 1x drivetrain with a wide-range cassette, Shimano hydraulic disc brakes for all-weather stopping power, a lightweight tubeless ready wheel set, wide, fast-rolling Bontrager GR1 Expert gravel tyres and a vibration-absorbing handlebar and ergonomic grips.
Fast, capable, comfortable. This bike has a road -smoothing carbon frame and quality parts that will hold up over serious miles, including the simpler-shifting 1x drivetrain.
*Please note – spec applies to all sizes unless listed separately
Frameset
| Frame with Fork | 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, 5x100 mm thru-skew |
| 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). |
| Shifter | Shimano Deore M4100, 10-speed |
|---|---|
| Rear derailleur | Shimano Deore M5120, long cage |
| Crank | Prowheel alloy, 42T narrow-wide ring, 175 mm length |
| Cassette | Shimano Deore M4100, 11-46, 10-speed |
| Chain | KMC X10, 10-speed |
| Pedal | Bontrager City pedals |
| Max. chainring size | 1x: 44T |
| 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 |
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| Brake Set | Promax DSK-927 hydraulic disc, flat mount, 160 mm rotor |
| Rotor size | Max brake rotor sizes: 160mm front & rear |
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.
Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.