Screw Type Proportioning Valve

The AP Racing brake proportioning valve is designed for motorsport applications where rear brake pressure adjustment is required to optimise braking performance under varying track and road conditions.

• Enables front-to-rear brake bias adjustment to suit changing surface conditions.
• Provides a brake pressure reduction range of up to 33%.
• Precision adjustment via an easy-to-use knurled control knob.
• Supplied with an indicator plate that provides clear confirmation of each full turn, making trackside adjustments quick and repeatable.

Installed inline within the braking system, the valve allows unrestricted fluid flow when fully closed. As the valve is progressively opened, brake line pressure can be reduced by up to approximately 33%, enabling precise brake balance tuning. The threaded adjustment mechanism provides smooth and accurate control throughout the entire adjustment range.

Manufactured with a lightweight, compact body, the valve features two mounting holes for secure installation to a bulkhead or panel. Both the inlet and outlet ports are fitted with M10 x 1 female threads for straightforward integration into compatible brake systems.