McLeod Mini Mag 7.25 Twin Disc 97-13 GM LS-X 6 Bolt Crank w/Aluminum Flywheel(168T 1-1/8 x 26)With NHRA Top Fuel proven technology, these 7 1 4" clutch kits have the only friction material designed to endure the required slippage of drag racing. With multiple diaphragm spring pressures, this clutch is able to suit individual applications. It has a high clamp to wear ratio, low moment of inertia, and has an open clutch cover design to keep the unit running cooler under heavy use. The kits can be ordered single, twin, or triple disc