Spec Clutch SC173F Stage 3 Plus High-Performance Clutch Kit

The Spec Clutch SC173F Stage 3 Plus Clutch Kit is the flagship performance stage in the SPEC lineup, engineered for high-powered street and race applications that demand strong torque capacity without sacrificing everyday drivability. The Stage 3+ design uses a carbon semi-metallic full-face friction material that delivers an outstanding combination of long service life, high friction coefficient, and smooth, predictable engagement characteristics — all in a single, complete package.

The disc hub is double-sprung with spring cover reliefs that allow for flex and vibration absorption under load, while heat-treated internal components provide the strength and fatigue resistance needed for sustained hard use. A high-clamp pressure plate provides the clamping force required to handle elevated torque without slip. This kit is SFI approved and designed, hand-built, and tested in the U.S.A.

Key Features:

• High-clamp pressure plate for increased torque holding capacity
• Carbon semi-metallic full-face friction material for superior life and coefficient of friction
• Double-sprung hub with spring cover reliefs for flexibility and vibration damping
• Heat-treated hub components for enhanced strength and durability
• Torque rating: up to 465 ft-lbs
• Bearing and installation tool kit included
• SFI approved
• Designed, hand-built, and tested in the U.S.A.

Recommended Driving Applications:

• Street performance
• Drag racing
• Autocross
• Road racing
• Rally / Rallye
• Pulling
• Drifting

The SC173F is a complete clutch kit that includes everything needed for installation, making it an ideal upgrade for drivers who need serious torque capacity and reliable engagement across a wide range of performance driving conditions.