Originally Posted by
XXLHardrock
I have an extra 10 speed cassette, chain and an M591 9 speed derailleur that I'd like to install on a flat bar MTB. Is there a shifter that will make this 9 speed derailleur work on a 10 speed cassette?
A 10 speed road shifter will:
http://productinfo.shimano.com/#/spe.../Shift%20Lever