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

ISO Width (mm): 113

GPS cycling computer with 3

Light lever action is paired with super positive indexing to make sure you never miss a shift

Thru-axle compatible for bike frames with widths of 142 or 148

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