Alright i have a ranger and got the booster and master cylinder from a 99 explorer off ebay. There are telling me there is no prop. Valve. I have a explorer axle with disc's so i would like to know if they have one or if its built in. Please let me know. NATE

there is no prop valve in the explorer's. Many ranger guys throw one in with a swap due to the light rear end. It's a good idea to put one in so you can fine tune it. It's easy to do anyway. If you're thinking of getting one, I have a new one from summit still in the opened package. Never used of course. Part # WIL-260-8419 I'll Send it to you for $30.

nope already bought one ,thanks anyways. NATE