Spec Clutch SA594-4 Stage 4 Performance Clutch Kit

The SPEC SA594-4 Stage 4 Clutch Kit is a solid hub version of the Stage 3, featuring a solid 8-rivet hub with heat-treated assembly for maximum strength and durability. This race-focused clutch is available in 3, 4, or 6 puck configurations, with the 3 puck offering the lightest option, the 6 puck providing the smoothest engagement, and the 4 puck delivering an ideal compromise between both.

Key Features:

• High-clamp pressure plate with carbon-graphite friction material
• High-torque solid hub and disc assembly
• Bearing and tool kit included
• 8-rivet solid hub construction with heat treatment
• SFI Approved for racing applications

While street drivable in the 6-puck configuration, this clutch is not street friendly due to its rigid hub design and is best suited for drag racing, road racing, pulling, rally, and drift applications. Proper break-in requires a minimum of 450 miles of primarily city and stop-and-go driving before full throttle engagement, drag launching, or speed shifting. Existing flywheels must be resurfaced prior to installation to ensure integrity of the friction surface.