Surly Track Cog 1/8'' X 18t Silver Model-Box Two Double-density padding for a softer

Double-density padding for a softer tip for ease of movement with high-density rear for the stability while pedalling

elastic jersey to ensure great fit

Perfect for preventing damage from knee pads shoes bike locks and storage

Machined aluminum cup

rocky terrain and in bike parks

Surly Track Cog 1/8'' X 18t Silver Model-Box Two Double-density padding for a softerSurly 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 Tooth Count 18 Size 1 8''