Valair put a lot of time and effort in designing their ZF6 clutch kits in order to determine what will truly cure these clutches from failure, and actually be able to hold some power and heavy duty towing. We offer their HD clutch replacement kits that include a heavy duty 4000 lb. pressure plate and solid flywheel. Their HD Ceramic clutch kit, as shown here, is designed for those looking for considerable holding power over stock (up to 600 RWHP) from various power adders. This clutch, being it is ceramic, will have a tendency of wanting to be relatively grabby compared to an organic, but it is designed to get your power to the ground without just turning into heat via slipping.