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Trek FX Sport 4

Trek FX Sport 4
  • Color: Dark Aquatic
  • Color: Lithium Grey
  • Color: Trek White
Color: Dark Aquatic
Size: Select size
Please select options Unavailable


FX Sport 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.

- 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, roadie! This fitness bike is more than capable of taking on speedy group road rides
- It's easy to accessorize with fenders, lights, and more!


Frame 400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, fender mounts, flat mount disc, 135x5mm ThruSkew
Fork FX Carbon, threadless alloy steerer, hidden fender mounts, flat mount disc, 5x100mm thru-skew
Rims Bontrager Paradigm, Tubeless Ready, 32-hole, 21mm width, presta valve
Hubs Front: Formula CL-51 alloy, 100x5mm QR
Rear: Formula CL-52 alloy, 135x5mm QR
Tires Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40c
Crankset Prowheel alloy, 42T narrow-wide ring
Shifters Shimano Deore M4100, 10 speed
Rear Derailleur Shimano Deore M5120, long cage
Cassette/Freewheel Shimano Deore M4100, 11-46, 10 speed
Chain KMC X10, 10 speed
Brakes Promax DSK-927 hydraulic disc, flat mount, 160mm rotor
Handlebars Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise
Tape/Grips Bontrager Satellite IsoZone Plus, lock-on, ergonomic
Stem Bontrager Elite, 31.8mm, Blendr compatible, 7 degree
Seatpost Bontrager alloy, 27.2mm, 12mm offset, 330mm length
Saddle Bontrager H1
Pedals Bontrager City pedals

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Dark Aquatic / X-Small 601842667040 5267817
Dark Aquatic / Small 601842667033 5267818 601842667033
Dark Aquatic / Medium 601842667026 5267819 601842667026
Dark Aquatic / Large 601842667019 5267820
Dark Aquatic / X-Large 601842667002 5267822
Lithium Grey / X-Small 601842667095 5267812
Lithium Grey / Small 601842667088 5267813 601842667088
Lithium Grey / Medium 601842667071 5267814
Lithium Grey / Large 601842667064 5267815
Lithium Grey / X-Large 601842667057 5267816
Trek White / X-Small 601842666999 5267824
Trek White / Small 601842666982 5267826
Trek White / Medium 601842666975 5267828
Trek White / Large 601842666968 5267830
Trek White / X-Large 601842666951 5267832