ACT Xtreme Pressure Plate - 06-15 Miata, 01-03 Protege - MZ018X Air/Fuel Ratio Sensor that's because it is

that's because it is

30-4406 displays boost from -30 - 35 PSI

Clutch Disc: 3000502

AI2-XTG4 kit features an Xtreme pressure plate for the most demanding driver

Combining that with the oversized 60 degree taper seat will keep the Muteki Close Ended Lug Nut tight against your wheel

ACT Xtreme Pressure Plate - 06-15 Miata, 01-03 Protege - MZ018X Air/Fuel Ratio Sensor that's because it isMZ018X is an ACT Xtreme pressure plate that uses exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four stage, heat treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACTs Xtreme pressure plates increase clamp load by 50 to 120 percent. Xtreme pressure plates are recommended for use with a street or