Spec Clutch SF525-3 Stage 5 Performance Clutch Kit - Full-Metallic Sintered Iron

The Spec Clutch SF525-3 Stage 5 Clutch Kit is engineered for maximum grip and extreme performance applications. Featuring a full-metallic sintered iron disc with the highest available friction coefficient, this kit delivers uncompromising holding power for drivers who demand the most from their drivetrain. It is technically street-drivable, but its aggressive engagement characteristics make it best suited for dedicated performance and racing use.

The disc assembly uses a solid 12-rivet hub for maximum torque transfer with zero flex, and the entire assembly is heat-treated for enhanced strength and long-term durability under extreme loads. A high-clamp pressure plate rounds out the package, ensuring consistent clamping force even under sustained high-heat conditions.

Key Features:

• Full-metallic sintered iron friction material — highest available friction coefficient for maximum torque capacity
• High-clamp pressure plate — delivers firm, consistent clamping force
• Solid 12-rivet hub and disc assembly — rigid, high-torque design with no sprung dampening
• Heat-treated assembly — built for strength and durability under extreme thermal stress
• Bearing and tool kit included — everything needed for a complete clutch installation

Recommended Driving Applications:

• Extreme street performance
• Drag racing
• Pulling
• Autocross

Designed, hand-built, and tested in the USA, Spec Clutch is an industry leader in high-performance clutch systems. The Stage 5 represents the top tier of their single-disc clutch lineup, offering extreme holding power and reliability for highly modified or race-dedicated vehicles.