ACT Clutch Kit with ACT Xtreme Pressure Plate and ACT Performance Organic Street Disc. ACT Xtreme Pressure Plates deliver the maximum holding power available! For high horsepower streetcars, combine this high clamp pressure plate with an ACT Street Disc to maintain smooth engagement and obtain high torque capacity. For racing, combine the ACT Xtreme Pressure Plate with the ACT Xtreme Race Disc for the ultimate in torque capacity, durability and quick shifting. What makes these units so unique? The radical increase in clamp load developed from a single specially designed diaphragm. ACT employs several secrets (just good engineering) to maximize load and reduce flex. The result is maximum torque capacity and long life, while maintaining good release clearance for fast, clean shifting. On some units, such as the Eclipse/Talon, ACT gussets the pressure plate cover to reduce flex caused by the high pressure. ACT Street Discs are designed for smooth engagement, quiet operation and improved durability using only the best organic, spring center designs. When an Act Modified Street Disc is available, the suffix "MM" appears in the disc part number. The marcel of the disc has been modified to enable quicker action. When a special ACT Performance Organic Street Disc is available, the suffix "SS" will appear. These discs use special steel backed performance linings designed to withstand high heat and abuse. Most of these "SS" discs are also modified for quicker shifting. What is all the hype about different lining materials available? ACT still contends that nothing can beat a good quality organic disc for street use. Virtually all the premium sport car manufacturers use organic discs. Fits 94-01 Miata 1.8L.