NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 18t Silver variant-size-sm Easily mounts anywhere on your

Easily mounts anywhere on your handlebar using a 4mm hex bolt

rails:Chromoly

Hub/Brake Compatibility: 6-Bolt Disc

and a 10-tooth start to the Rival component group

NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 18t Silver variant-size-sm Easily mounts anywhere on yourSurly 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