Spec Clutch SB073F-2 Stage 3 Plus Performance Clutch Kit - Carbon Semi-Metallic Full Face

The SPEC SB073F-2 Stage 3 Plus Clutch Kit is SPEC's flagship street and performance clutch upgrade, engineered for high-powered vehicles that demand maximum torque capacity without sacrificing daily drivability. Built around a carbon semi-metallic full-faced friction disc, the Stage 3+ delivers an outstanding combination of friction coefficient, service life, and smooth engagement characteristics that set it apart from conventional performance clutch options.

At the core of the kit is a high-clamp billet pressure plate paired with a high-torque double-sprung hub and disc assembly. The sprung hub features spring cover reliefs for added flexibility under load, while heat-treated internal components provide the structural integrity needed for sustained high-performance use. The kit includes a 671 ft-lbs torque capacity at the flywheel, making it suitable for heavily modified street builds as well as dedicated competition vehicles.

Key Features:

• Carbon semi-metallic full-faced friction disc for superior grip and longevity
• High-clamp billet non-ratcheting pressure plate included
• Double-sprung hub with spring cover reliefs for smooth, flexible engagement
• Heat-treated hub components for strength and long-term durability
• 671 ft-lbs flywheel torque capacity
• SFI approved clutch kit and components
• Bearing and installation tool kit included

Recommended Driving Applications: Street, Drag Racing, Autocross, Road Racing, Rally, Drifting, and Pulling

The SPEC Stage 3+ is recommended for street and strip use and represents the top of SPEC's street-oriented clutch lineup before transitioning into full race-only Stage 4 and Stage 5 configurations. Kit includes billet non-SAC pressure plate.