18 Tooth Replacement Cog for SRAM and SunRace 11-speed

Replacement cog for 11-speed SRAM and SunRace cassettes. These are specifically designed for use with SRAM and SunRace cassettes. The clocking, or rotational orientation, between SRAM and Shimano cassettes are much different so optimal shifting cannot be achieved unless the design is optimized for each separately. Compatibility SRAM 11 speed cassettes NX 11-42 (PG-1130) SunRace 11-speed cassettes CSMS8 (11-42) CSMS7 (11-42) CSMX8 (11-42) Related Products Cassette Cog RoadLink Tech Specs Weight: 22gWidth: 1.6mmMaterial: black oxide steelMade in the USA Patent and trademark information