The 2026 FX Sport SL 4 XS MATTE ONYX CARBON is available at the following locations.
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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. 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 prioritise comfort and performance equally, and want the simplicity that 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 wheel set, wide, fast-rolling Bontrager GR1 Expert gravel tyres and a vibration-absorbing handlebar and ergonomic grips. The final word Fast, capable, comfortable. The 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.
| Frame | Size L, UNI, Carbon, 400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, fender mounts, flat mount disc, 135x5mm ThruSkew |
| Wheel Size | Front 28 |
| Wheel Size | Rear 28 |
| Weight | 10500 g |
| Fork | Carbon, hidden fender mounts, flat mount disc, 100x5mm thru-skew |
| Fork | |
| Gears | DERAILLEUR, Shimano, 10 Gears |
| Tyres | BONTRAGER, |
| Pedals | BONTRAGER, |
| Wheels | UNKNOWN, Bontrager Paradigm, Tubeless Ready, 32-hole, 21mm width, Presta valve Formula CL-51 alloy, 100x5mm QR Formula CL-52 alloy, 135x5mm QR |
| Shifters | SHIMANO, Shimano CUES U6000 w/optical gear display, 10 speed, |
| Kickstand | UNKNOWN, |
| Front Brake | SH, Shimano hydraulic disc, MT201 lever, UR300 caliper // Shimano hydraulic disc, MT201 lever, UR300 caliper Shimano RT10, centerlock, 160mm Max brake rotor size, |
| Rear Brake | SH, Shimano hydraulic disc, MT201 lever, UR300 caliper // Shimano hydraulic disc, MT201 lever, UR300 caliper Shimano RT10, centerlock, 160mm Max brake rotor size, |
| Rear Derailleur | , |
| Crankset | PROWHEEL, Prowheel alloy, 42T narrow-wide ring, 175mm length |
| Chain | SHIMANO, Shimano LG500, 9/10/11 speed |
| Handlebar | BONTRAGER, Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 660mm width |
| Stem | BONTRAGER, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 110mm length |
| Bartape / Grips | BONTRAGER |
| Seatpost | BONTRAGER |
| Saddle | BONTRAGER, Bontrager H1 |
| Front Light | UNKNOWN |
| Rear Light | UNKNOWN |
| Colours | MATTE ONYX CARBON |
| Sizes | L, M, S, XL, XS |
| Brand | Trek |
| Model Year | 2026 |
| Barcodes | 197216045786, 197216045793, 197216045809, 197216045816, 197216045823 |
| SKUs / Part Numbers | 5323707, 5323708, 5323709, 5323710, 5323711 |
Please note: Manufacturers can sometimes change the specification of the products from time to time.
