Surly Single Cog - Steel

Sometimes you need a smaller cog, sometimes a bigger one; luckily, the Surly Single Cog caters to your fancy. The machined SCM415 Cro-Moly steel cog features a tall tooth profile to prevent chain skip and work with 6-9-speed 3/32in chains. Available in every increment from 13-22T for perfect gearing\Stackable and derailleur compatible for a multi-speed drivetrain8- or 9-speed chain recommended but will work with 6- and 9-speed 3/32in chainsHeat-treated for ultimate strengthChrome-plated for surface hardening and improved chain lubricityFits Shimano-compatible freehub bodies