ACT Extreme Clutch Pressure Plate 2004-2021 STI

DESCRIPTION

The ACT Extreme Clutch Pressure Plate is designed for 2004–2021 Subaru WRX STI models as a replacement for worn Xtreme pressure plates. The SB019X uses ACT’s exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch life. All diaphragms undergo a four-stage heat-treating process, and precision cover stampings provide rigidity and consistent performance. The Xtreme design increases clamp load by 50 to 120 percent and is recommended for use with street or race clutch discs. The included Monoloc one-piece retaining ring ensures proper bearing alignment and long-term durability under repeated high-RPM use.

WHY?

This replacement plate allows STI owners to restore clutch performance without purchasing a full kit. The Xtreme diaphragm design and heat-treated construction provide reliable clamp load, positive engagement, and confidence during hard shifts. The Monoloc system ensures proper alignment and smooth operation, making it a durable and long-lasting solution for both street and race applications.

FEATURES:

• ACT Xtreme diaphragm pressure plate

• Increases clamp load by 50 to 120 percent

• Moderate to heavy pedal effort with positive engagement

• Compatible with street and race clutch discs

• Monoloc one-piece retaining ring for proper bearing alignment

• Heat-treated diaphragms and precision cover stampings for durability
  

COMPATIBILITY

2004-2021 STI

SPECIFICATIONS