5.5" Diameter 3-Disc Clutch; 1-1/8" x 10-Spline
For Crate Chevy (Externally Balanced, 1-Piece Rear Main Seal)
Includes Button-Style Flywheel
Optimum-V Clutches
From the NASCAR Cup Series to road course racers, the Optimum-V is the most trusted race clutch in the world. With an innovative open cover design that delivers maximum durability and the industry’s lowest moment of interia for a metallic clutch, the Optimum-V should be your only choice when you want peace of mind that you are racing with the latest in clutch technology.
6-leg design with gas slots for maximum cooling
Extremely light for quicker starts & deeper braking
Bronze sintered metallic frictions resist wear & heat
Integrated wear pins hold clearances for longer cover life
Racer rebuildable internals & one-piece aluminum cover