Spec Clutch SY874 Stage 4 Performance Clutch Kit - Carbon Semi-Metallic

The Spec Clutch SY874 Stage 4 Clutch Kit is a race-grade performance clutch engineered for heavily modified engines and demanding motorsport applications. As a solid hub evolution of the Stage 3, this kit delivers maximum torque holding capacity with instantaneous engagement, making it the go-to choice for serious competitors on the drag strip, road course, rally stage, and drift track.

Key Features:

• Solid 8-Rivet Hub: Heat-treated solid hub assembly for exceptional strength and long-term durability under extreme loads
• High-Clamp Pressure Plate: Aggressive clamping force engineered to handle high-torque, high-horsepower applications
• Carbon Semi-Metallic Friction Material: Available in 3, 4, or 6-puck configurations — choose 3-puck for the lightest rotational mass, 6-puck for the smoothest engagement, or 4-puck as an optimal compromise between the two
• Torque Capacity: Rated at 350 lb-ft
• Kit Includes: High-clamp pressure plate, carbon semi-metallic friction disc, high-torque solid hub and carrier assembly, release bearing, and alignment tool

Intended Use: Drag Racing, Drift, Road Racing, Rallye, Pulling, Circle Track. Note: The rigid hub design produces a harsh, instantaneous engagement characteristic. While technically drivable in 6-puck configuration, this kit is not recommended for street use. Stages 4 and 5 are race-only applications.

Installation Note: Unless using a new SPEC flywheel, the existing flywheel surface must be resurfaced prior to installation to ensure proper friction surface integrity.