Centerforce strives to provide top of the line products for all performance levels. To do so, Centerforce uses patented processes and constantly tests different materials and designs to find the best combination. The Dual Friction® series is the best in high-performance, street friendly, single disc clutches. This series is now available for 1993 to 1996 Mazda RX7 Twin Turbo 13B Engine. The Dual Friction part number above is: DF506900 (Pressure Plate, Disc, Alignment Tool, Pilot Bearing, & T.O.B.) The Centerforce Dual Friction pressure plates feature patented processes to provide a performance clutch that offers exceptional street characteristics, while offering outstanding holding-capacity and durability. The Centerforce Dual Friction disc has a full facing on the pressure plate side for drivability and longevity, while a carbon composite puc style (segmented) facing is used on the flywheel side for a positive engagement and increased holding-capacity. Centerforce Dual Friction is the ultimate in street/strip holding power and performance without sacrificing pedal effort and driver control.