Surly Track Cog 1/8'' X 18t Silver ModelNumber=D1430 Misc Red Green and Black

Misc Red Green and Black

Single bolt fastening and angle adjustment design

Advanced SL fork

Maximum grip: Reinforced side lugs for improved grip in bends and solid center lugs for perfect brake transmission and grip off-road

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

Surly Track Cog 1/8'' X 18t Silver ModelNumber=D1430 Misc Red Green and BlackSurly 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''