Speed Pro Speed Pro Piston Forged 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 29.4 cc Fresh Air Systems Meets performance specs of OE

Meets performance specs of OE silicone gaskets

Black Horn Button with red Stitching

VHT High Heat Paint with Ceramic

Because of their compact size and standard GM mounting ears

Speed Pro Speed Pro Piston Forged 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 29.4 cc Fresh Air Systems Meets performance specs of OEFully 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 micro finished 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.