Aluminum Single Speed Cog Color:Gold 100 mm (standard) or 110

100 mm (standard) or 110 mm (Boost) with the below exceptions

Features an alpine binding mount plate for mounting telemark

Shimano I-SPEC A

We recommend wheel speed #2 for most situations

Aluminum Single Speed Cog Color:Gold 100 mm (standard) or 110These 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+,