EXEDY Engineers develop, perfect and manufacture our own friction materials. Exedy 04-21 Subaru WRX STI H4 OEM Clutch Kit with exceptional friction and wear characteristics that will help engage smoothly, grip as expected and provide you with a longer lasting installation. Disc Spring Dampers: This is the center section of the clutch disc. EXEDY spring-type disc dampers are patented worldwide to suppress engine and driveline noise by absorbing vibrations .Vehicle-specific designs let you enjoy your ride without compromise.
 
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