Im currently rebuilding my braking system and my master cylinder is shot. I work at a motorcycle shop and we can order universal master cylinders that fit 7/8” bars. What bore size is the piston on a master cylinder from an 82 xj550 maxim? My other question is, if my bore size is let’s say 1/2” can I put on a cylinder that has a 5/8” bore? It would just be pushing more brake fluid right? You just don’t want to go smaller than the stock size? Thanks guys!