Premium Clutch Kit by RhinoPac®. Includes: Pressure Plate, Clutch Disc. Does not Include: Flywheel, Slave Cylinder. Disc Outer Diameter: 8.500″. Input Shaft Spline: 0.875″ x 20 Teeth. Pressure Plate Style: Diaphragm. Disc Material: Organic. Pressure Plate Bolt Pattern: 8.5″. Upgrade your vehicle to a RhinoPac Clutch Kit to get smooth clutch operation and precise shifting you expect from your car. Each part is precision engineered to ensure the extended service and unsurpassed reliability that RhinoPac is known for.