These aluminum single speed cogs feature extra tall teeth for reliable chain retention when using chain tensioners. They are reversible and feature a 4.5mm width at the base that won't dig into your freehub body.

Specifications

• Fits: Shimano HG freehubs (geared or single speed)
• Designed to work with any chain through 12-speed. Tooth width optimized for 9,10, and 11-speed chains
• Material: 7075-T6 Aluminum
• Weight: 14.5g (16T) // 16.5g (17T) // 19g (18T) // 21g (19T) // 23.5g (20T) // 28g (22T)