Shimano 12 speed 10 45 cassette July 8, 2019 16 32 64 128 Shimano xtr cassette 12 speed 10 45 Shimano xt 12 speed cassette 10 45 Shimano slx 12 speed cassette 10 45 Shimano xt 12 speed cassette 10-45 weight Shimano 12 speed shifting Shimano cassette 11 speed Shimano deore 10 Shimano xt 12 speed derailleur setup
