9 speed cassette 11 40 July 8, 2019 16 32 64 128 Sunrace 9 speed cassette 11 40 Sunrace csm980 9 speed cassette 11 40 11 40t 9 speed cassette Shimano 9 speed cassette 11 40 9 speed 50t cassette 9 speed 11-42 cassette 9 speed 11-50 cassette 9 speed 11-42