Recommended for applications with forced induction engines producing up to 1250 foot pounds of torque in vehicles weighing up to 4000 pounds. Will handle more torque in lighter vehicles. Input shaft is manufactured from 300M steel billet blanks. 7075 billet aluminum clutch housing is five pounds lighter than OEM and is sealed and hard coat anodized to reduce seal ring bore and clutch plate to housing wear common with other designs. Housing is bored out to 1.125" and fitted with an oversize 40 spline input shaft, vastly increasing surface area at the interface, eliminating housing failures. Fully machined, shaped, and ground on precision CNC equipment. Exclusive design provides a positive stop for the shaft, stopping the shaft from walking out of the housing, a problem that has plagued other designs. Fully machined, splined, and ground on precision CNC equipment.