Action Clutch ACR-1791-884006P Stage 4 Performance Clutch Kit for Subaru WRX EJ205 Turbo

The Action Clutch Stage 4 (1MD) Clutch Kit is engineered for high-performance applications where durability and aggressive engagement are paramount. This kit features a heavy-duty single diaphragm pressure plate with reinforced drive straps and an unsprung MIBA ceramic disc available in 4 or 6-puck configuration, delivering exceptional holding capacity for modified turbocharged engines.

Key Features:

• 170% increased holding capacity over factory clutch kit
• Heavy-duty single diaphragm pressure plate with reinforced drive straps
• Unsprung MIBA ceramic 4 or 6-puck rigid disc for instant engagement
• Includes ACT Monoloc collar—a one-piece upgrade that eliminates snap ring failure common in OEM two-piece collars
• SFI 1.1 certified for racing applications
• 100% hand-assembled and quality-checked in the USA by engineers with over 60 years of collective experience

Performance Characteristics:

• Lightning-fast engagement with minimal clutch chatter after proper break-in
• Designed for race applications including drag racing, road racing, and drift
• Slight increase in pedal pressure with aggressive on/off engagement
• Superior heat dissipation for sustained high-performance use

Important Notes:

• Requires 500-mile break-in period: keep RPMs under 4,500, no more than half-throttle, no boost
• Not recommended for daily street driving—unsprung design intended for dedicated race vehicles or heavy track use
• Ceramic discs prioritize holding capacity and durability over longevity in street applications
• Proper clutch kit selection is critical to avoid premature failure and warranty issues

Each Action Clutch kit undergoes rigorous quality inspection before shipment, ensuring consistent performance and reliability when you need it most. Ideal for modified Subaru WRX builds with increased boost and power output that demand maximum clutch control without compromising durability.