Speed Pro Speed Pro Piston Forged 4.000" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 6.1 cc PD155K 000 in Oval Port

000 in Oval Port

1962-2007 Chevrolet Corvette

Available in a set of 12 under 831-12The COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development

standard volume upgrade of the M340

hose it down and carry on

Speed Pro Speed Pro Piston Forged 4.000" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 6.1 cc PD155K 000 in Oval PortFully updated skirt profiles Exclusive DUROSHIELD skirt coating. DUROSHIELD provides scuff resistance, reduced bore clearances and enhanced ring sealing. SPEED PRO POWERFORGED pistons are built to stringent specifications with a precision CNC machined dome and skirts and microfinished ring grooves. The manufacturing process ensures that piston weights within a boxed set will not vary more than 4 grams and that skirt sizes are matched to within 0.