StopTech
StopTech High Performance Brake Products, Big Brake Kits, Brake Rotors, Brake Pads and Brake Lines
StopTech High Performance Brake Systems was the first to offer balanced brake upgrades for production cars and remains the worldwide leader with over 650 platform offerings to dramatically improve overall braking performance. In 2013, StopTech earned full ISO/TS 16949:2009 Quality Management System certification for the design and manufacture of automotive brake systems and components, allowing the company to supply OEM vehicle assembly plants directly in a Tier 1 relationship.
StopTech Balanced Brake Upgrades provide that supercar look while delivering superior control and stopping distance equal to or better than stock brake systems. They are the ultimate brake system upgrade to support extended track lapping sessions or aggressive street driving in powerful cars. StopTech Balanced Brake Upgrades are fully engineered, bolt-on systems for production cars and trucks and production-based competition vehicles, requiring little or no modification to the chassis or suspension. The more than 650 available applications include forged, billet or squeeze-forged calipers, street performance pads, caliper mounting brackets, directional patented AeroRotors®, DOT-compliant stainless steel brake lines and all hardware required for a complete installation. StopTech brake systems are engineered, manufactured and tested utilizing the most advanced technology available today. Accesspeed is proud to offer StopTech products to our customers. With our low price match guarantee, you will always find the best combination of price and selection at Accesspeed.
Below are some of the great StopTech products available from Accesspeed:
- Big Brake Kits
- Race Brake Kits
- Axle Packs
- Brake Pads
- Brake Rotors
- Stainless Steel Brake Lines
- Performance Brake Fluid
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.