Spec Clutch SB453F Stage 3 Plus Performance Clutch Kit

The Spec Clutch SB453F Stage 3+ Clutch Kit is SPEC's flagship full-face performance clutch, engineered for high-powered street and race vehicles that demand serious torque capacity without sacrificing daily drivability. The Stage 3+ steps up from the puck-based Stage 3 by using a carbon semi-metallic full-face friction disc — a design that delivers an exceptional balance of friction coefficient, service life, and smooth, predictable engagement characteristics in a single package.

The disc hub is double-sprung with spring cover reliefs, providing added flex and compliance under load while heat-treated internal components ensure long-term strength and durability under high-stress driving conditions. A high-clamp pressure plate rounds out the assembly, giving the clutch the clamping force needed to handle elevated torque levels.

Key Features:

• Carbon semi-metallic full-face friction material for superior life and friction coefficient
• High-clamp pressure plate for increased torque holding capacity
• Double-sprung hub with spring cover reliefs for flexibility and smooth engagement
• Heat-treated hub components for enhanced strength and durability
• High-torque sprung hub and disc assembly
• Includes bearing and alignment tool kit
• Designed and hand-built in the U.S.A.

Intended Use:

• Street
• Drag Racing
• Pulling
• Autocross
• Road Racing
• Rally
• Drift

The SPEC Stage 3+ is the ideal choice for enthusiasts who have moved beyond basic bolt-on modifications and need a clutch system capable of reliably managing high torque output while retaining streetable, manageable engagement. All SPEC clutches are designed, hand-built, and tested in the U.S.A.