The SRAM Red 22 Hollow Pin 11 Speed Chain features more heavily chamfered outer plates for enhanced shifting & quieter running. Other advancements include a new inner plate finish plus chrome hardened pin construction, both for longer chain life. The Hollow Pin construction of SRAM's 11 speed chain provides smooth, precise shifting & weight savings without sacrificing strength. Using Power Chain II technology increases front & 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 & cassettes.