Clutch Masters FX725 Twin-Disc Race/Street Clutch w/ Al FW | Subaru WRX (06-17) (15021-TD7S-A)Twin Disc Race Street Clutch Kit w Aluminum FW by Clutch Masters Many of the traditional high performance aftermarket clutch kits can cause excessively increased pedal pressure. Such action places an unsafe amount of pressure on the delicate crankshaft thrust bearing found in a number of today's sport compact vehicles. Clutch Masters' design team knows that placing undue stress on the thrust bearing causes it to prematurely wear or completely fail,