Shimano Rear Derailleur RD-6400 Total CapacityHelp
0
22
I am rebuilding a pretty sweet Miyata T6000 Titanium bike. The bike is outfitted with a full Shimano 600 Tri-color group set. The crank is 53-39 teeth and the existing (suspect original) cassette is a 7 speed 13-21 corncob. I would like to give the bike higher gearing and don't want to change the...