Ralco RZ xtreme Stage 4 FRx300 clutches are designed for the individual whose goal is to have an ultimate street/strip/track clutch system. Ralco RZ xtreme Stage 4 clutches only consist of the very best materials available. The pressure plate is made from the forged ductile iron (3x stronger than the conventional cast iron pressure plate) to ensure consistant clamping force and the extra long life. The 6-Puck sprung race discs have a high capacity heat treated sprung center hub for a precise and smooth clutch engagement. The 6-puck copper ceramic (also known as MIBA ) disc features high-coefficient friction pads that are resistant to slippage and burst. All Ralco RZ xtreme clutches require 500 mile break-in period.
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