The front and rear brakes are totally separate systems. It's just that the rear caliper has two separate chambers pushing on the same piston.
The rear caliper has one piston that is stepped - both the hand lever and foot pedal apply pressure to the same piston. If you want to separate the brakes operators, you have to disconnect the line that goes to the front MC and cap it at the junction block - you then need to get a special line line that has a Y fitting on the caliper end so both piston chambers can be connected to the rear MC or find a conventional caliper that will replace the stepped piston design. Viola, problem solved!
Shop Owner and Mechanic with over 50 years experience
Last edited by latebird; 05-15-2019 at 10:46 AM.