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AP Racing's range of Proportioning Valves have been specially designed
for use in competition vehicles where it is desired to reduce the hydraulic line
pressure and therefore braking effort of the rear brakes to compensate for
varying road/track conditions or vehicle handling characteristics.
- Due to internal adjustements set by AP
Racing, do not strip these assemblies.
- DO NOT attempt any modification of
These valves are suitable for use with any brake fluid that conforms to DOT
3, DOT 4 or DOT 5.1 standards, but best all round performance will be achieved
with either AP Racing PRF660 or 600 brake fluids.