NEW Surly Cogs Track Cog Surly Track Cog 1/8'' X 20t Silver tubeless-ready-clincher ISO Width (mm): 113

ISO Width (mm): 113

4 Stems are fully forged 6061-T6 aluminum stems that have a 4-bolt handlebar clamp

Seat Post Diameter:27

Lock Style: Lock Not Included

NEW Surly Cogs Track Cog Surly Track Cog 1/8'' X 20t Silver tubeless-ready-clincher ISO Width (mm): 113Surly 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: 20