Surly Track Cog 1/8'' X 18t Silver ModelNumber=D1430 Single bolt fastening and angle

Single bolt fastening and angle adjustment design

All Contact tread design features a fast rolling pointed centerline (smaller contact patch) and gentle center-to-side transition for added cornering predictability

Advanced SL fork

Misc Red Green and Black

6 bolt disc brake interface and modern boost spacing

Surly Track Cog 1/8'' X 18t Silver ModelNumber=D1430 Single bolt fastening and angleSurly 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 1 8''