SRAM PC RED 22 11sp ChainThe SRAM RED 22 chain features more heavily chamfered outer plates for improved shifting and quieter running. Other advancements include a new inner plate finish plus chrome hardened pin construction, both for longer chain life. The HollowPin construction of SRAM's 11 speed chain provides smooth, precise shifting and weight savings without sacrificing strength. Features SRAM Road 11 speed compatible SRAM RED eTap compatible HollowPin technology equals