【Brake Bias Control】Brake proportion valve 66RV10 EBM01 is designed for rear drum brake use with a 10lb setup helping improve brake balance and steering response during braking. 【Vehicle Fitment】Proportioning valve brake bias adjuster suits race cars drifting rally and track day cars and fits 1964 70 applications as a replacement part. 【Material Details】Made of aluminum alloy this brake bias valve is built for repeated use. Item type brake proportion valve OE 66RV10 EBM01 for rear brake system setup. 【Easy Installation】Designed for straightforward installation without complicated tools making it easier to add or replace a rear drum brake proportioning valve in workshop or garage use. 【Use Scenario】Suitable for drivers building or servicing race and drift brake systems where rear drum brake pressure management is needed for track day and rally applications., Manufacturer: Pissente