Spec Clutch SZ085 Stage 5 Race Clutch Kit - Full Metallic Sintered Iron Disc

The SPEC SZ085 Stage 5 Clutch Kit is SPEC's most aggressive single-disc performance clutch, engineered for heavily modified drag race and pulling applications that demand maximum torque transfer and the highest possible clamping force. This is a race-only clutch kit and is not suitable for general street use due to its characteristically harsh, progressive engagement.

Key Features:

• Full-metallic sintered iron disc — delivers the highest possible friction coefficient for maximum grip and torque capacity
• High-clamp pressure plate — adjustability available on select applications for tuning clamping load to your specific build
• Solid 12-rivet hub — rigid, unsprung disc assembly for direct, no-slip power transfer under extreme load
• Heat-treated assembly — hub and disc are heat treated for enhanced strength and long-term durability under race conditions
• SFI approved — meets SFI safety certification standards for sanctioned racing use
• Kit includes: High-clamp pressure plate, rigid sintered iron disc assembly, release bearing, and installation tool kit

Intended Use: Drag racing and pulling competitions. Due to the full-metallic disc construction and aggressive clamping load, this clutch is not recommended for daily street driving. For best results, this kit should be configured in consultation with a SPEC technical representative based on your specific vehicle, power level, and racing application.