[SCOTI]

Originally Posted by DKN

We don’t currently offer a 13” rear brake and we are not planning on it until we have a 14” front brake. The rear brake should be smaller than the front. You do not want the rear brake to lockup and skid. This will cause the truck to spin out of control. Here is a typical example; I bought my Jeep used. It has 12” front disc with 11” rear drums. The rear drums were a special ordered option. The rear always locked up under medium to heavy braking. I tried different adjustable proportioning valves, but always had a problem. The MCPV1 master cylinder worked. It turns out that the rear drums lock up at 350psi so the MCPV1 is adjusted to rear max pressure of 325psi. With this set up my Jeep actually stops super good. I’m very curious is anyone actually driving around with 13” front and 13” rear brakes? How do they actually work? Does the rear lock up first? We would like to know before we start producing larger brake kits.

Thanks, Danny Nix
CPP

My GF's BMW w/14" F/R discs doesn't seem to have any issue w/rear lock-up .

I would investigate selling a matching 13" rear kit for use w/that MCPV1 since it's adjustable. At least try a set for evaluation.