Farley C is an OCLV Mountain Carbon fat bike frameset for four-season shredders who know fat bikes can be fast, high-performance machines — despite their oversized appearance. This insanely light fat bike frameset includes a Bontrager Haru carbon fork and is built to accommodate 26x5" or 27.5x4" wheels.
- The faster you ride a fat bike, the more fun it gets — and this bike is a lot of fun.
- Its a four-season freedom machine that lets you ride outside all year long.
- You can run your choice of wheels with 26x5" or 27.5x4" tires
- The lightweight carbon frame keeps the setup remarkably light and nimble for a fat bike
OCLV Mountain Carbon
Treks mountain-specific carbon fiber is tougher carbon, with unique materials and layup procedures, Treks advanced engineering, and a higher standard of testing.
![]()

27.5˝ fat tires
More efficient 27.5" fat tires keep you rolling faster, especially on groomed or packed snow.
![]()

Frame |
OCLV Mountain Carbon, tapered head tube, internal derailleur & dropper post routing, PressFit 121mm BB, 197x12mm adjustable horizontal sliding dropouts |
Fork |
Farley full carbon, tapered carbon steerer, OCLV Carbon lowers, 490mm axle-to-crown, 15x150mm thru axle |
Skewer Front |
Bontrager 150x15mm thru axle, 198mm length // Bontrager Switch thru axle |
Skewer Rear |
Bontrager Switch thru axle, removable lever |
Seat Collar |
Bolt-on, 36.4mm |
Headset |
FSA IS-2, 1-1/8 top, 1.5 bottom |
Geometry Chart
B B Drop |
6.7 |
B B Height |
32.1 |
Chainstay Length |
45.5 |
Eff Seat Tube Angle |
73.0° |
Eff Top Tube |
59.4 |
Frame Reach |
41 |
Frame Size Letter |
M |
Frame Size Number |
17.5" |
Frame Stack |
60.1 |
Head Angle |
69.0° |
Head Tube Length |
10 |
Offset |
5.1 |
Seat Tube |
41.9 |
Seat Tube Angle |
71.5° |
Standover |
75.7 |
Trail |
9.4 |
Wheelbase |
111.9 |
Wheel Size |
27.5" |