The SRAM Red 22 Hollow Pin 11 Speed 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. Using PowerChain II technology increases front and load shifting performance with effecting the rear shifting. The Red 22 chain is only compatible with SRAM Red 22 & Force 22 Front & Rear derailleurs, Cranksets and cassettes.