Wheels MFG SOLO-SPEED Single Speed Cog 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. Features 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 SPECIFICATIONSMaterial Aluminum Tooth Count16SPECIFICATIONSVariant MFG#Black 16t SOLO-COG-16T-1Black 18t SOLO-COG-18T-1Black 19t SOLO-COG-19T-1Black 20t SOLO-COG-20T-1Black 21t SOLO-COG-21T-1Black 22t SOLO-COG-22T-1Black 23t SOLO-COG-23T-1Blue 16t SOLO-COG-16T-6Blue 18t SOLO-COG-18T-6Blue 19t SOLO-COG-19T-6Blue 20t SOLO-COG-20T-6Blue 21t SOLO-COG-21T-6Blue 22t SOLO-COG-22T-6Blue 23t SOLO-COG-23T-6Green 16t SOLO-COG-16T-8Green 18t SOLO-COG-18T-8Green 19t SOLO-COG-19T-8Green 20t SOLO-COG-20T-8Green 21t SOLO-COG-21T-8Green 22t SOLO-COG-22T-8Green 23t SOLO-COG-23T-8Orange 16t SOLO-COG-16T-3Orange 18t SOLO-COG-18T-3Orange 19t SOLO-COG-19T-3Orange 20t SOLO-COG-20T-3Orange 21t SOLO-COG-21T-3Orange 22t SOLO-COG-22T-3Orange 23t SOLO-COG-23T-3Purple 16t SOLO-COG-16T-7Purple 18t SOLO-COG-18T-7Purple 19t SOLO-COG-19T-7Purple 20t SOLO-COG-20T-7Purple 21t SOLO-COG-21T-7Purple 22t SOLO-COG-22T-7Purple 23t SOLO-COG-23T-7Red 16t SOLO-COG-16T-2Red 18t SOLO-COG-18T-2Red 19t SOLO-COG-19T-2Red 20t SOLO-COG-20T-2Red 21t SOLO-COG-21T-2Red 22t SOLO-COG-22T-2Red 23t SOLO-COG-23T-2Teal 16t SOLO-COG-16T-5Teal 18t SOLO-COG-18T-5Teal 19t SOLO-COG-19T-5Teal 20t SOLO-COG-20T-5Teal 21t SOLO-COG-21T-5Teal 22t SOLO-COG-22T-5Teal 23t SOLO-COG-23T-5 | Wheels Manufacturing | Solo-Speed Single Speed Cog | Green | 23T