ZM1-XTR4 1990-1993 Mazda Miata ACT XT 4-Puck Solid Hub Clutch Kit includes a pressure plate, clutch disc, release bearing, alignment tool, and pilot bearing.

XT Xtreme Pressure Plate:
Clamping loads increase 50% - 120%. Pedal effort feels moderate to stiff. SFI certified to ensure safety.

R4 Solid Hub 4-Pad Disc:
Recommended for drag and road racing. Race geared disc that would be a little too harsh on the street but perfect for race cars or non-daily driven track cars. This disc is a popular choice for stock based road racing cars.

Benefits are:
increased torque capacity, fastest shifts, low inertia, good durability but shortened spline life, sharper engagement than sprung hub disc.