Hey have an 93 flh being restored and customized. Builder converted front and rear to 2002 axles and rear swing arm. On rear he can't get brakes to work so far. Said master needed rebuilt. My Concern is weather the rear master of an 93 has enough bore to run the dual piston caliper on the 2002 swing arm. Builder said that the conversion was no big deal. Has anyone else done this and how did it work.

 

Use the master for that brake. Make sure you are running the right fluid too. Dot 5 doesn't work for dot 4

 

It'll work most rear MC's are 3/4" bore and I run 2 4piston calipers on mine with no problems , it's the front MC's that get into the size issue .