Description Improved driving efficiency and stable shifting Shave bike weight off without sacrificing durability or reliability Optimal balance of lightweight and durability Ride anywhere with smooth and precise gear changes Combination of aluminum (40T) and steel gears Optimized gear combination and gear ratio Gear combination: 11-40T, 11-42T, *11-46T (new) *11-46T only compatible with 1×11-speed drivetrain 11-40T (for 3/2/1×11-speed) Wide cassette sprocket 11-40T 11-42T (for 2/1×11-speed) Rhythm step gear progression 11-46T (for 1×11-speed)
