The Trek FX Sport SL 4 is a fast, lightweight hybrid built for fitness riding and commuting — a carbon fork and Shimano CUES drivetrain designed to bridge the gap between a road bike and a flat-bar commuter.
WHO THIS BIKE SUITS
You want a fast, comfortable bike for fitness rides and commuting rather than a full drop-bar road bike.
You want reliable, low-maintenance CUES shifting rather than a more race-focused groupset.
IF YOU'RE LOOKING FOR SOMETHING DIFFERENT
If you want more gear range and a wider tyre for light gravel, the FX Sport SL 5 or 6 step up in spec and capability.
WHERE IT SITS IN THE RANGE
The SL 4 is the entry point into the FX Sport range — same fast-hybrid geometry and carbon fork as the bikes above it, with a Shimano CUES drivetrain keeping the price accessible.
THE FINAL WORD
If you want a genuinely fast bike for commuting and fitness riding without drop bars, the FX Sport SL 4 is a great starting point.
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.
Fork: Carbon, hidden mudguard mounts, flat mount disc, 100x5 mm thru-skew
Rear derailleur: Shimano CUES U6000 GS
Crank: Prowheel alloy, 42T narrow-wide ring, 175 mm length
Cassette: Shimano CUES LG300, LINKGLIDE, 11-48, 10-speed
Chain: Shimano LG500, 9/10/11-speed // KMC X Glide, 11-speed, gray
Tyres: Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40 mm
Rims: Bontrager Paradigm, Tubeless-Ready, 32-hole, 21 mm width, Presta valve
Seatpost: Bontrager alloy, 27.2 mm, 12 mm offset, 330 mm length
Saddle: Bontrager Commuter Comp
Handlebar: Bontrager alloy, 31.8 mm, 15 mm rise, 660 mm width
Not sure if this is the right bike for you? Get in touch and we'll help you choose with confidence.
Personalised Bike Consultation
Not sure which model is perfect for you? Our expert team at All Ride Now in Midhurst, West Sussex is here to help you choose with confidence.
- Will you be riding mainly on or off-road?
- Do you prefer an upright or sportier riding position?
- Are you looking for longer range, lighter weight, or a more comfortable feel?
Through a friendly consultation – in-store, by phone, live chat or email – we’ll help you narrow down your options and find the bike that best fits your needs.
