Surly Steel Single Speed Cog


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Return/Exchange: 60 Days

SKU: CS2401

Product Description

Surly’s cassette-type cogs are designed to fit on standard Shimano compatible freehub bodies. These cogs have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters. In addition to being a stellar SS cog, the cog base width (where it contacts the freehub body) is 4.35mm, so you can stack a few of them up and use a 9-speed shifter for a simplified multi-speed drivetrain. This width also prevents it from ruining the freehub body as a result of digging grooves into it like skinny stamped cogs have a tendency to do. Surly cogs are machined from SCM415 CroMoly steel, then heat-treated for toughness and chrome-plated for surface hardening and enhanced chain lubricity. These cogs will work with 6-9-speed chains, although we recommend the inherently updated quality of an 8 or 9 speed chain. They are also available in every increment from 14-18T, so you can select that perfect gear.



Weight 0.5 lbs

14T, 15T, 16T, 17T, 18T



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