Brake Proportion Valve Adjustable Fit For Car Prop Brake Proportion Valve Enhance your vehicle's braking system with this adjustable valve knob, allowing you to customize your driving experience. Improve safety and control on the road by adjusting the brake bias to suit your specific driving conditions. Produced from heavy-duty plastic, this component is highly resistant to rust and damage, ensuring an extended operational life. The cylinder oil separator breather valve stops fluid from flowing back into the master cylinder, thus keeping pipeline pressure low., Manufacturer: HAYSXVR