WHAT MASTER CYLINDER ?

DoctorDiff 15/16” on my Duster and my Challenger.

Have run them with the later B/R body 11.75” disks/11x2.5” drums, DoctorDiff 13” cobra disks/11x2.5” drums, and DoctorDiff 13” cobra disks/DoctorDiff 11.7” disks. All but the latest disk/disk combo was run with the factory combination valve.