ok just about to buy shimano xt cassette…theres two sizes ? it says m770 or m771 …whats the difference please…… deciding to get a kmc chain too….apparently they are stronger and quieter shifting……
chainrings im getting ‘blackspire’…will blackspire be compatible with kmc chain .. never had blackspire before….just fancy a change 😉

oh ps,,,got my usual xt rear mech too…

770 is 9 speed, 771 is 10 speed.

is the higher number not 10 speed and the lower number 9 speed?

i duno……im after a 9 speed cassette… so im asuming an m770 then..

yes and make sure it is a 9 speed chain as well

all the components – if 9 speed will work together

Chainrings will be fine with the chain, as long as the are both the same number of speeds (9 or 10). Cassette wise, m770 is 9 speed m771 is 10 speed.

ok thanks alot.. 😉