NEW Surly Cogs Track Cog Surly Track Cog 1/8'' X 20t Silver tubeless-ready-clincher Nominal Dimensions: 60mm tall

Nominal Dimensions: 60mm tall

Lock Style: Lock Not Included

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

GPS cycling computer with 3

Seat Post Diameter:27

NEW Surly Cogs Track Cog Surly Track Cog 1/8'' X 20t Silver tubeless-ready-clincher Nominal Dimensions: 60mm tallSurly 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