[68 P.O.S.]

Originally Posted by BASE

It's not clear to me if the disc/disc valves do any proportioning. I'm guessing not, but it probably gives you the safety valve and warning light switch. I may be way off, but I've never seen any specs on what kind of bias they use. I guess I haven't seen that for a disc/drum valve either though. You would think that requirement would vary a lot based on front to rear caliper piston size, weight dist, etc. I was going to plumb mine without any kind of valve but now I've about talked myself into the adjustable setup.

Yes, it does. The disc/disc combo valves still have a proportioning valve in the back, pressure differential switch (warning light) in the middle, and metering valve in the front.