Aluminum Single Speed Cog Tooth Count:22T Rotor diameter front/back: 160/160 mm

Rotor diameter front/back: 160/160 mm

especially as the temperature rises above freezing

D-Shape SeatpostAn evolved version of BMC’s signature design with a minimalist saddle clamp for lower weight

New in 2026

Aluminum Single Speed Cog Tooth Count:22T Rotor diameter front/back: 160/160 mmThese aluminum single speed cogs feature extra tall teeth for reliable chain retention when using chain tensioners. They are reversible and feature a 4. 5 mm width at the base that won't dig into your freehub body. Compatibility These will fit on Shimano Hyperglide style freehub spline (geared or single speed). Not compatible with Shimano Microspline or SRAM XD freehubs. Designed to work with any 9, 10, and 11 spd chain and SRAM Eagle, Shimano HG+,