FX Sport SL 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. The 1x drivetrain simplifies shifting without sacrificing gear range, making this high-performance bike perfect for everything from solo workouts to speedy group rides.

Dialed-in to go all day

A slightly shorter reach and taller stack put you in a more upright, balanced position for smooth power and all-day rideability.

Light on weight. Big on performance.

Designed with 400 Series OCLV, the lightweight carbon frame keeps things fast and responsive, so you can accelerate quicker and handle with confidence.

1x drivetrain

A 1x drivetrain means more versatility, simpler shifting and less 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.

Fast, smooth, reliable

With SRAM Apex, you get precise shifting and confident braking for a ride that feels quick, fun, and in control.

Ready for any path

Wide gravel tires keep you rolling fast with added traction and control, while increased clearance lets you take on rougher terrain with ease.

Pack it up, pack it in

Mounts for a top tube bag, rack, fenders and water bottles let you carry everything you need for day-long adventures, fast commutes, and anything in between.

Frame	400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, fender mounts, flat mount disc, 135x5mm ThruSkew
Fork	Carbon, hidden fender mounts, flat mount disc, 100x5mm thru-skew
Tire	Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40c
Hub Front	Formula CL-51 alloy, 100x5mm
Hub Rear	Formula CL-52 alloy, 135x5mm
Rim	Bontrager Paradigm, Tubeless Ready, 32-hole, 21mm width, presta valve
Spokes	14g stainless steel, black
Skewer Front	135x5mm bolt-on
Skewer Rear	169x5mm bolt-on
Shifter	Shimano CUES U6000 w/optical gear display, 10 speed
Rear Derailleur	Shimano CUES U6000 GS
Crank	Prowheel alloy, 42T narrow-wide ring, 170mm length
Cassette	Shimano CUES LG300, LINKGLIDE, 11-48, 10 speed
Chain	KMC X Glide, 11-speed, gray
Brake	Shimano hydraulic disc, MT201 lever, UR300 caliper // Shimano hydraulic disc, MT201 lever, UR300 caliper
Brake Rotor	Shimano RT10, centerlock, 160mm
Pedal	Bontrager City pedals
Saddle	Bontrager Commuter Comp
Seatpost	Bontrager alloy, 27.2mm, 12mm offset, 330mm length
Handlebar	Bontrager alloy, 31.8mm, 15mm rise, 600mm width
Stem	Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length
Grips	Trek Ergonomic Pro, lock-on

Geometry Chart

B B Drop	6.5
B B Height	28.5
Chainstay Length	44.2
Eff Top Tube	54.3
Frame Reach	38.5
Frame Size Letter	S
Frame Stack	56.8
Head Angle	70.5°
Head Tube Length	14
Offset	5
Seat Tube	40.6
Seat Tube Angle	74.5°
Standover	75.1
Trail	7.1
Wheelbase	105.4
Wheel Size	700c