The DYAD DS (Drive System) multi-disc clutch design has been developed to meet the needs of modern high-end vehicles. Today’s technology has allowed for engine torque levels up to 1300 ft /lbs and still be driven every day. Drivers need a clutch that can offer; smooth engagement, quiet operation, light pedal, and high-end holding capacity. The DYAD DS offers that and more! The Definition of DYAD: “dy ad Two units treated as one; a couple; a pair, or combining power of two.” No complicated setup or adjustments required Fully dampened clutch system developed for vehicles with extreme power levels Patented ball bearing pressure plate Patented multi-disc floating disc and drive disc design Quiet, positive drive floater Smooth engagement and light pedal effort High torque capacity up to 1300 ft/lbs at the flywheel Precision balanced Greater longevity ARP fasteners Excellent driver control Comes preassembled for your convenience Specification card included! Part Number 04614847 Input Shaft Spline (Inches) 1-1/8- 26 Size Metric 266.7 Size Inches 10.5 Ring Gear Tooth Count 168 Ring Gear O.D. 14.096 Counter Balance 0 IN/OZ Includes Press. Plate, Discs, Floater, Flywhl, Bolts, Align Tool, Pilot Brg, T.O.B. Ext.