NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 14t Silver cassette_shimanosram Primary Material: Nylon

Primary Material: Nylon

bike tubes and other durable materials

Patented Bead Socket Technology rim shape easier tubeless inflation and more reliable seal

Full 4130 Chromoly

NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 14t Silver cassette_shimanosram Primary Material: NylonSurly 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: 14