Spec Clutch SZ945 Stage 5 Clutch Kit - Drag Race & Pulling

The SPEC SZ945 Stage 5 Clutch Kit is engineered for the most extreme performance applications, including heavily modified drag race engines and pulling competition vehicles. This kit is also well-suited for applications requiring a slipper clutch or progressive torque-induced engagement, making it a go-to choice for serious motorsport builds where maximum torque transfer and control under load are critical.

Due to its aggressive engagement characteristics, the Stage 5 is not recommended for street use. For best results, SPEC strongly recommends custom configuration based on your specific vehicle build and intended use — consult with a SPEC technical specialist before ordering to ensure the correct setup for your application.

Kit Includes:

• High clamp load pressure plate (adjustability available on select applications)
• Rigid iron disc assembly
• Release bearing
• Installation tool kit

Key Features:

• Maximum clamping force for extreme torque capacity
• Rigid iron disc construction for aggressive, immediate power transfer
• Progressive torque-induced engagement — compatible with slipper clutch applications
• Custom configuration available for specific builds and racing classes
• Designed for drag racing and pulling competitions

The SPEC Stage 5 represents the top of the SPEC performance clutch lineup, purpose-built for competitors who demand uncompromising power transfer in sanctioned motorsport environments.