This oversized 42t cog is designed to be used with 10spd cassettes for extending the gear range with 1X drivetrains. CNC machined from 6mm thick AL 7075 T6 plate for great strength. Compatible with both SRAM & Shimano cassettes.
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If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or the component hasn’t been fitted.More information on returns