Complete adjustable brake proportioning kit

One of the best ways to get the most out of your brakes is to adjust the brake proportioning, or bias. The ideal brake bias depends on your ride height, the amount of traction you have (both due to your tires and the surface you're driving on) and the specification of your braking system. You always want the front brakes to lock up first for stability reasons, but Mazda was extremely conservative and so the rears never have a chance to make much of a contribution. The proportioning valve drops the rear brake line pressure to a lower amount than the front. This adjustable proportioning valve replaces the fixed factory unit and allows you to adjust your brake bias for the perfect setup. We always have a way to adjust our brake bias in our competition cars. The valve allows to set the rear pressure anywhere from 43% to 100% of the front pressure, and it will approximate the proper curve required like the factory one does. What makes our kit different? Our exclusive 1/8 NPT to M10 inverted