PowerStop Brakes
PowerStop Brake Kits, Brake Rotors, Brake Pads, Brake Calipers, Brake Hoses and More
Every brake pad PowerStop manufactures uses a carbon-fiber ceramic material, providing a dust-free, noise-free, fail-free braking experience. PowerStop engineers work to ensure everything they make is a direct bolt-on replacement for the original brakes, making it easy to upgrade any vehicles braking performance. And PowerStop tests all of their products using the “LA Traffic Test,” the same test that auto manufacturers use when designing new vehicles. PowerStop co-founder Arvin Scott has spent his entire life around cars. As a kid, Arvin would spend his summers helping run the cash register at his grandfather’s auto parts store in the outskirts of Chicago. Early on, Arvin realized that most vehicles suffer from weak brakes. With PowerStop, he set out make the brakes that should have come on every new car. Today, the goal for PowerStop is to provide top quality performance brakes for every vehicle on the road. Accesspeed is proud to offer PowerStop products to our customers. With our lowest price match guarantee, you will always find the best combination of price and selection at Accesspeed.
- Big Brake Kits
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Brakes » Brake Proportioning & Pressure Valves
Brake Proportioning Valves & Pressure Valves
What is a proportioning valve?
A proportioning valve is a pressure reduction device used to adjust and tune brake bias. It is typically installed in-line in the rear brake line to reduce rear braking efficiency and compensate for premature rear-wheel lock-up; a result of incorrect front to rear brake bias. An adjustable proportioning valve permits incremental adjustments to fine tune brake bias. This ability to adjust front-rear brake bias is particularly important in race applications, as changing track conditions and vehicle dynamics usually require the brake bias be adjusted throughout the race.
What is brake bias?
Brake bias is the percentage of total braking force applied to the front wheels. It can also be called brake balance. A 60-70% bias is common on RWD street vehicles, applying 60-70% of the total braking force to the front brakes. Front wheel drive cars can have up to 80% brake bias.