Diference between 11/30 and 11/32 Cassette ?
I have a 2017 Giant Contend 1 .An i am starting to do my own maintenance. It has shimano Sora 9 speed 11/32 rear Cassette with a Compact 34/50 Crank . I have well over 3,000 miles on it . An it is time to replace my Cassette and Chain again . My Cassette is 11/32 but every time I look it up to...