Wheels Manufacturing SOLO-XD Cog – 21t Blue. Wheels Mfg. SOLO-XD and SOLO-SPLINE Single Speed cogs are constructed with high-end 7075 aluminum and designed with narrow to wide alternating tooth pattern allowing for superior chain retention. Cogs are optimized for use with Wheels Mfg. SOLO-XD XD/XDR and SOLO-SPLINE Single Speed Conversion kit carrier systems only.

Crafted with high-end 7075 aluminum for light weight and extreme durability

Cogs are optimized for use with Wheels Mfg. SOLO-XD XD/XDR and SOLO-SPLINE Single Speed Conversion kit carrier system only

Designed with narrow wide alternating tooth pattern allowing for superior chain retention

Fits 9 10 and 11-speed chains

Compatible with 12-speed SRAM Eagle KMC SRAM Road and SRAM T-Type Transmission flattop chains

Will not work with 13-speed Campagnolo or 12-speed Shimano HG+ chains

• TECH SPECS

Tooth Count 21Cassette Body Type Shimano Micro SplineCassette Body Type SRAM XDCassette Body Type SRAM XDRMaterial AluminumDefined Color Blue