Improved riding efficiency and stable shifting Reduce bike weight without sacrificing durability or reliability Optimal balance between light weight and durability Ride anywhere with smooth and precise shifting Combination of aluminum gears (40T) and made of steel Optimized gear combination and transmission ratio Gear combination: 11-40T, 11-42T, *11-46T (new) *11-46T only compatible with 1x11 speed transmission Gear progression in rhythmic steps 11-46T ( for 1x11 speed)

11-13-15-17-19-21-24-28-32-37-46T