Spec Clutch SF663F Stage 3+ Clutch Kit Carbon Metallic High Clamp

The SPEC SF663F Stage 3 PLUS Clutch Kit is engineered for heavily modified street and race engines that demand torque capacity beyond what the standard Stage 3 can deliver. Designed as a step up from the Stage 3, this kit maintains good daily drivability while offering improved manageability and even better wear characteristics — making it an ideal choice for high-performance builds that see regular street use alongside aggressive track or competition duty.

Key Features:

• High clamp pressure plate for increased clamping force to handle elevated torque loads
• Full-faced carbon metallic friction disc for superior heat resistance, durability, and consistent engagement under hard use
• High torque sprung hub and disc assembly to absorb driveline shock and reduce transmission wear
• Includes release bearing and installation tool kit for a complete, ready-to-install solution
• Better wear characteristics compared to the Stage 3, extending service intervals under demanding conditions

Intended Driving Applications:

• Street / Daily Driving
• Drag Racing
• Drifting
• Road Racing
• Pulling

The SPEC Stage 3 PLUS is the go-to clutch upgrade for drivers who need maximum torque capacity without sacrificing the street manners required for everyday use. Whether you're building a dedicated race car or a high-powered street machine, the SF663F delivers the performance and reliability SPEC is known for.