2005-2006 Duramax LBZ Feramic Dual Disc Clutch Kit (DDCMAX-Z)2005 2006 Duramax LBZ Feramic Dual Disc Clutch Kit (DDCMAX Z) South Bend Clutch Dyna Max feramic clutch kits are manufactured with full feramic lining on a marcelled fin. The kits offer modified pressure plates for a higher plate load and smooth clutch engagement. South Bend Clutch Dyna Max feramic clutch kits help you to resolve premature disk failure from high horsepower or heavy hauling and they're available with or without a flywheel.