Spec Clutch SF375 Stage 5 Race Clutch Kit

The Spec Clutch SF375 Stage 5 Clutch Kit is SPEC's highest-performance single-disc clutch solution, engineered specifically for drag racing, tractor pulling, and other extreme performance applications that demand maximum torque capacity and a progressive, torque-induced engagement. Rated to handle up to 610 lb-ft of torque, this kit is built for heavily modified race engines where nothing less than a full-race clutch will do.

Key Features:

• Full-metallic sintered iron disc — delivers the highest possible friction coefficient for maximum torque transfer
• Solid 12-rivet hub assembly — heat-treated for exceptional strength and long-term durability under race conditions
• High-clamp pressure plate — provides aggressive clamping force to handle extreme power levels
• Rigid, full-faced disc design — engineered for instant, firm engagement typical of a drag race or slipper-style clutch setup
• SFI Approved — meets SFI safety certification standards required at sanctioned racing events
• Kit includes: High-clamp pressure plate, rigid iron disc assembly, release bearing, and installation tool kit

The Stage 5 is SPEC's most aggressive single-disc offering and is not recommended for street use due to its harsh, abrupt engagement characteristics. This kit is best suited for dedicated race vehicles and should be selected in consultation with a SPEC technical representative to ensure the correct configuration for your specific application. SPEC backs this clutch with a 120-day warranty against defects in materials and workmanship.