Stage 4 1MD is designed for high horsepower vehicles that will encounter heavy-duty street use, drag, drift, and road racing. It is engineered to have 170% increase holding capability. The 1MD has a slight increase in pedal pressure, rapid heat dissipation, and aggressive engagement due to the single diaphragm and heavy-duty pressure plate design. The metallic direct disc features an unsprung hud which is extremely lightweight and provides instant engagement. Available with 4 puck, 6 puck, or 6 puck grooved disc.