Fine-tune your car's front-to-rear brake pressure with this lever-type adjustable brake proportion valve. Designed for motorsport use, it gives you direct control over brake bias to improve turning stability and overall braking performance on the track.
This brake bias valve allows you to adjust the rear brake pressure from 0% to 60% reduction. By placing the valve in line to the rear brakes, you can shift more braking force to the front wheels. This helps prevent rear wheel lockup under hard braking, making your car more stable and easier to control during corner entry.
Built from billet aluminum, the valve is both lightweight and durable. It handles a pressure range of 150 PSI to 1200 PSI, making it suitable for race cars, drift cars, rally cars, and track day vehicles. The inlet and outlet ports use a standard 1/8 NPT thread for easy integration into existing brake lines.
This valve is used by professional race drivers and teams in series like Pro-Drift, BDC, BTCC, and 750 MC. It is a reliable tool for anyone looking to gain more control over their braking system without needing a complex dual master cylinder setup.
Key Features and Benefits
- Lever-type adjustable design that lets you change brake bias quickly and precisely during a race or practice session
- 0% to 60% pressure reduction range that helps prevent rear wheel lockup and improves corner entry stability
- Billet aluminum construction that offers strength and corrosion resistance without adding unnecessary weight
- 150 PSI to 1200 PSI pressure range that suits high-performance braking systems used in motorsport
- 1/8 NPT inlet and outlet ports that make installation straightforward with standard brake line fittings
Who Is This For
- Track day drivers who want to fine-tune their car's handling and braking balance for faster lap times
- Drift and rally competitors who need precise rear brake control to initiate and hold slides
- Amateur and professional race teams looking for a reliable, race-proven brake bias solution
- Builders of single master cylinder race cars who want adjustable rear brake pressure without upgrading to a dual system
Usage Scenario
Mark was struggling with rear wheel lockup entering tight corners during his local track day. After installing this adjustable brake proportion valve, he dialed in a 40% rear pressure reduction. The car became much more stable under hard braking, and he could carry more speed into corners without fighting the rear end. His lap times dropped by over a second on his first outing with the valve.
Micro Comparison
Unlike fixed proportioning valves that offer a single pressure split, this lever-type valve lets you adjust bias on the fly. It is a simpler and more affordable alternative to a dual master cylinder setup, giving you real-time control without the complexity of a full pedal box. For single master cylinder cars, it is one of the most effective upgrades for improving brake feel and corner entry control.
Specifications
- Material: Billet aluminum
- Pressure Range: 150 PSI - 1200 PSI
- Reduction Range: 0% - 60%
- Port Thread: 1/8 NPT
- Application: All race cars, drifting, rally, and track day cars
Package Includes
- 1x Brake Proportion Valve (Lever Type)
Why You Will Love It
You get professional-grade brake control without the cost or complexity of a full dual master cylinder system. The lever adjustment is intuitive, so you can make changes between sessions or even during a run. It is a proven component used by top race teams, giving you confidence that your braking setup is track-ready.
Questions and Answers
Question: Does this valve work with any brake fluid?
Answer: Yes, it is compatible with standard DOT 3, DOT 4, and DOT 5.1 brake fluids used in most performance and race cars.
Question: Can I install this myself?
Answer: Professional installation is highly recommended. This component is part of your brake system, and incorrect installation can affect braking performance.
Question: Will this fit my car?
Answer: It fits any car with a single master cylinder and 1/8 NPT brake line fittings. It is designed for motorsport use, not for daily drivers with stock braking systems.
Question: How do I adjust the brake bias?
Answer: Turn the lever to increase or decrease the pressure going to the rear brakes. Turning it one way reduces rear pressure, the other way increases it.
Question: Does this come with mounting hardware?
Answer: It includes the valve only. You will need your own brake line fittings and mounting hardware for installation.
