Quarter Master 5.5in Optimum Clutch SBC 3 Disc 1-5/32in x 26 Spl 37517090

If you're running a small-block Chevy in bracket racing, street performance, or high-RPM applications, you need a clutch engineered for consistent engagement and proven durability under repeated load cycles. The Quarter Master Optimum 5.5in triple-disc clutch delivers exactly that—three friction surfaces mean more clamping force and better power transfer without the harshness of single-disc setups. This is a complete kit with flywheel included, so you get everything needed for a professional install.

The sintered bronze friction material provides reliable bite and excellent heat dissipation, while the rigid hub eliminates chatter and keeps shifts predictable lap after lap. Whether you're tuning for consistency at the track or building a reliable street engine, this clutch handles the demand.

• 5.5 inch diameter
• Triple disc design
• 1-5/32 in x 26 spline
• Rigid hub
• Sintered bronze friction
• Optimum-V pressure plate
• Includes flywheel
• 2-piece seal
• Small block Chevy fitment
• Complete clutch kit