EXEDY Racing Clutches with organic friction materials use only premium friction materials that are resistant to slippage and burst. Increased clamp loads give the necessary capacity to handle modified engines.
The driveability will be like a stock clutch. Pedal efforts will be higher because of the higher clamp loads. All of our clutch discs have high capacity spring center dampers to reduce the drive train shock and impact.
Clutches with Cerametallic Material
EXEDY cerametallic clutches are designed to handle the abuse of high power, modified engines. EXEDY cerametallic friction material can handle much more slippage than stock type disc assemblies without slipping and fading.
All EXEDY cerametallic clutch discs have spring center dampers to reduce the impact and shock loads put into the drive train. This protects the transmission and the rest of the drive line system.
EXEDY offers two types of cerametallic clutch discs, normal thickness and reduced thickness. The reduced thickness (thin cerametallic) discs offer greatly reduced inertia to improve shift efforts, make for faster shifting, and improve synchro durability. These discs are approximately ½ the thickness of a stock disc.
Normal thickness (thick cerametallic) discs have better heat capacity and therefore better durability in demanding applications, such as all wheel drive. Even with the normal thickness, our three puck cerametallic discs still have less inertia than a stock disc.
With any cerametallic clutch system, there will be some compromise of start up driveability as compared to a stock clutch (chatter on light throttle, low rpm start up). This characteristic is generally felt to be acceptable in modified performance cars. Drivers of cerametallic clutches on the street should be warned not to "ride the clutch" to try to reduce the chatter as this will greatly increase the wear.
Lightweight Flywheels
Exedy lightweight flywheels are designed for use with Exedy Organic and Cerametallic Clutches.
EXEDY Racing Flywheels are made from solid one-piece billet chrome moly steel or chrome moly steel forgings. They are specifically designed to reduce weight and inertia for better engine response. Most incorporate special design features to enhance the air flow to improve the cooling of the
clutch. The ring gear teeth are milled onto the flywheel unlike an aluminum flywheel where the ring gear is pressed onto the flywheel which has the possibilities of separating from the flywheel. This could cause the flywheel to explode due to two different expansion coefficients (steel ring gear pressed on aluminum flywheel). EXEDY steel billet and forged flywheels have passed engineering tests to 15,000 rpms. They are guaranteed to be explosion proof at the said rpm.
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