12 speed, 51T max , front single

12 speed, 45T max , front double

12 speed, direct mount, max 51T, total capacity 41T, long cage

11S, 46T

12 speed, 51T max , front single

12 speed, 45T max , front double

12 speed, direct mount, max 51T, total capacity 51T, long cage

11/12 speed, 51T max