Surly Track Cog 3/32'' X 18t Silver Model=Extended Out-Front Mount Type MTB Headtube/Quill Diameter 1-1/8`

Type MTB Headtube/Quill Diameter 1-1/8` Length 60 Bar Clamp Diameter 31

Durable anodizing and laser graphics Stem Angle (deg) 0 Length 45 Bar Clamp Diameter (mm) 31

Automatic keyhole cover to protect against dirt and corrosion

Purple 2°

Surly Track Cog 3/32'' X 18t Silver Model=Extended Out-Front Mount Type MTB Headtube/Quill Diameter 1-1/8`Surly 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 Size 3 32''