SPEC Clutch
SPEC Clutch Kits, Pressure Plates, Discs, Flywheels, Hydraulic Conversion Kits and More
SPEC is a leading manufacturer of high-performance street clutches, racing clutches, and flywheels. Spec offers clutch kits from stage 1 street clutches to Super Twin Disc clutches, along with a variety of flywheel options to compliment your new Spec Clutch Kit, as shown below:
- Spec Stage 1 Street Clutch
- Spec Stage 2 Street Clutch
- Spec Stage 2+ Street Clutch
- Spec Stage 3 Street/Track Clutch
- Spec Stage 3+ Street/Track Clutch
- Spec Stage 4 Race Clutch
- Spec Stage 5 Race Clutch
- Spec Super-Twin Clutch
- Spec Mini-Twin Clutch
- Billet Aluminum Flywheels
- Billet Steel Flywheels
- Hydraulic Conversion Kits
SPEC offers several pressure plate options designed to fit a wide variety of applications, including lightweight, aluminum and Super Clamp upgrades. Whether you need quicker revs, more horsepower, increased engine reliability or extreme clamp loads, Accesspeed has a Spec Clutch that fits your needs. With our lowest price match guarantee, you will always find the best combination of price and selection at Accesspeed.
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.