Spec Clutch SF723F Stage 3 Plus High-Performance Clutch Kit

The Spec Clutch SF723F Stage 3 Plus is the flagship street/strip clutch kit engineered for heavily modified, high-powered engines that demand both serious torque capacity and day-to-day drivability. Rated up to 525 ft-lbs of torque, the Stage 3+ steps beyond the standard Stage 3 with a full-faced carbon semi-metallic friction disc that delivers superior wear life, a higher friction coefficient, and more manageable engagement — all in a single package.

The disc hub is double-sprung with spring cover reliefs for added flexibility under load, and all hub components are heat-treated for long-term strength and durability. The high-clamp pressure plate works in combination with the carbon semi-metallic friction material to provide confident, consistent clamping force across a wide range of operating temperatures. All Spec clutch kits and flywheels are SFI approved and proudly designed, hand-built, and tested in the U.S.A.

Key Features:

• High-clamp performance pressure plate for maximum clamping force
• Full-faced carbon semi-metallic friction disc for outstanding durability and drivability
• Double-sprung hub with spring cover reliefs for flexibility and shock absorption
• Heat-treated hub components for strength and long service life
• Rated up to 525 ft-lbs torque capacity
• SFI approved clutch kit and flywheel compatible
• Includes bearing and installation tool kit
• Designed, built, and tested in the U.S.A.

Ideal Driving Applications: Street, Drag Racing, Drift, Road Racing, Autocross, Rally, Pulling

The Stage 3+ is Spec's recommended top-tier street/strip stage — offering a step up from the Stage 3 in torque capacity and friction life while maintaining a driver-friendly engagement feel. Stages 4 and 5 are reserved for race-only use, making the Stage 3+ the most capable clutch kit suitable for daily driving on heavily built street machines.