Spec Clutch SM503F Stage 3 Plus Clutch Kit with Carbon Metallic Disc

The SPEC SM503F Stage 3 PLUS Clutch Kit is engineered for heavily modified street and race engines that demand more torque capacity than the standard Stage 3 can deliver. Designed for serious performance applications, this kit improves upon the Stage 3 with enhanced wear characteristics and better overall manageability — without sacrificing the aggressive torque handling required for high-output builds.

Compared to the Stage 3, the Stage 3 PLUS offers improved daily drivability, making it a practical choice for builds that see both street use and track duty. The full-faced carbon metallic friction disc provides exceptional grip and heat resistance, while the high clamp pressure plate ensures consistent, confident engagement under hard use.

Key Features:

• High clamp pressure plate for increased clamping force and torque capacity
• Full-faced carbon metallic friction disc for superior heat resistance and wear life
• High torque sprung hub and disc assembly for smooth engagement and drivetrain shock absorption
• Improved wear characteristics over the standard Stage 3
• Better daily drivability and manageability compared to Stage 3
• Includes bearing and installation tool kit for complete installation

Intended Use: Street, Drag Racing, Drift, Road Racing, Pulling

The SPEC Stage 3 PLUS is the ideal upgrade for performance builds that have outgrown standard Stage 3 clutch kits and need a reliable, high-torque solution that can handle the demands of multiple performance disciplines.