Surly Track Cogs are threaded the same as a BMX freewheel (1.375 x 24 tpi right-hand threads). This means that they will fit on single-speed rear hubs, as well as BMX freewheel hubs, but this application is not recommended. Track cogs are meant to work on track hubs only.
- 415 hardened chromoly steel
- 1.375" x 24 tpi
- Photo for color and material reference only
Cogs: 17T, 20T, 22T
Size: 3/32" (Single Speed)
This product is expected to become available for purchase on Thursday, December 2, 2021