SHIMANO Alivio FC-M4000 Crankset Inner Chainring 22T-AX & Chain Protector for 40-30-22T- Y1PL98030 For use with Shimano Alivio FC-M4000 9-speed triple chainsets with a 40-30-22T setup. Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.