5323707
197216045786
ANY BIKE PURCHASED IN WHEELWORX COMES WITH A LIFETIME FREE SERVICE
The 2025 FX Sport 4 XS MATTE ONYX CARBON is available at the following locations.
The item will be transferred to the location you choose during checkout.
If the item is not currently available to view at your desired location, please call your nearest store to arrange for it to be transferred.
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 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.
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.
- 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 accessorise with mudguards, lights and more!
Make it your own
Customise your bike with fenders, racks, bottle cages and more to make it your own.
1x drive train
A 1x drivetrain means more versatility, simpler shifting and fewer things to go wrong. You still have a wide range of gears, but with lighter and more intuitive shifting. Everything you need and nothing more.
Just-right geometry
The all-new FX Sport has slightly less reach and slightly more stack than previous models for a more comfortable yet active and fast riding position.
400 Series OCLV
Ultra high performance, within reach. The areal weight range and modulus mix of 400 Series OCLV provides an exhilarating sense of acceleration and confident handling.
Shimano CUES
Inspired by rider demand for trouble-free drivetrain longevity and performance, Shimano CUES offers a new foundation for versatility and durability across a range of both electric and standard bikes. CUES features Shimano's new LINKGLIDE drivetrain technology for significantly increased life on wear items like chain, cassette and chainrings.
Upgrade your pedals and love your bike more
Pedals are two of the five touchpoints that connect you with your bike, and even though this bike comes with a pair, upgrading to pedals that boost control and grip will greatly improve your ride. See the pedal guide and find the best pedals for your riding style. We recommend flat pedals for simple versatility.
Frame | Size S, UNI, Carbon, Frame: CARBON |
Wheel Size | Front 28 |
Wheel Size | Rear 28 |
Fork | Carbon, hidden fender mounts, flat mount disc, 5x100mm thru-skewer |
Gears | DERAILLEUR, Shimano, 1 Gears |
Tyres | BONTRAGER, |
Pedals | BONTRAGER, |
Wheels | Bontrager Paradigm, Tubeless Ready, 32-hole, 21 mm width, Presta valve Formula CL-51 alloy, 100x5 mm QR Formula CL-52 alloy, 135x5 mm QR |
Shifters | SHIMANO, Shimano CUES U6000 w/optical gear display, 10-speed, |
Front Brake | SH, Shimano hydraulic disc, MT201 lever, UR300 calliper // Shimano hydraulic disc, MT201 lever, UR300 caliper Shimano RT10, CenterLock, 160 mm Max brake rotor size, Disc brake with hydraulic actuation |
Rear Brake | SH, Shimano hydraulic disc, MT201 lever, UR300 calliper // Shimano hydraulic disc, MT201 lever, UR300 caliper Shimano RT10, CenterLock, 160 mm Max brake rotor size, Disc brake with hydraulic actuation |
Rear Derailleur | , |
Crankset | Prowheel alloy, 42T narrow-wide ring, 175 mm length |
Chain | SHIMANO, Shimano LG500, 9/10/11-speed |
Handlebar | BONTRAGER, Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 600 mm width |
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 | 2025 |
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.
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