SPEC SN355-2 Stage 5 Performance Clutch Kit - Full-Metallic Sintered Iron

The SPEC SN355-2 Stage 5 Clutch Kit represents the top of SPEC's single-disc performance clutch lineup, engineered for drivers who demand maximum grip and holding power. Featuring a full-metallic sintered iron disc with the highest available friction coefficient, this kit is built to handle extreme power levels where conventional organic or ceramic clutches fall short. While technically street-drivable, the Stage 5 is purpose-built for high-performance and competition use.

The disc assembly uses a solid 12-rivet hub construction, and the entire assembly is heat-treated for exceptional strength and long-term durability under sustained high-load conditions. A high-clamp pressure plate provides the aggressive clamping force needed for drag racing, pulling, and other demanding motorsport applications.

Key Features:

• Full-metallic sintered iron friction material — maximum friction coefficient for extreme torque capacity
• High-clamp pressure plate — increased clamping load over stock and lower-stage units
• Solid 12-rivet hub and disc assembly — rigid, high-torque power transfer with no torsional flex
• Heat-treated assembly — enhanced strength and durability under racing conditions
• Bearing and tool kit included — everything needed for a complete clutch replacement
• SFI Approved — meets SFI safety certification standards

Ideal Driving Applications: Extreme street, drag racing, pulling, and autocross. Note that the aggressive full-metallic disc material results in a harsher pedal feel and engagement compared to street-oriented stages — this kit is best suited for dedicated performance builds.