Speed Pro Hypereutectic Piston 4.310" Bore 5/64 x 5/64 x 3/16" Ring Grooves Plus 20.0 cc - Coated Skirt Parts & Accessories Quick Fuel Technology Our steel retainers are precision

Our steel retainers are precision machined from 4140 chromemoly and finished in black oxide

and the big 24-oz

1966-1981 Pontiac Laurentian

RECOMMENDED TO REPLACE WHEN INSTALLING NEW LOWERING SPRINGS

Speed Pro Hypereutectic Piston 4.310" Bore 5/64 x 5/64 x 3/16" Ring Grooves Plus 20.0 cc - Coated Skirt Parts & Accessories Quick Fuel Technology Our steel retainers are precisionSophisticated "barrel" profiles help optimize oil wedge between skirt and wall. Piston skirts protected by next gen DUROSHIELD coating. TAC ring groove geometry Weight matched to + 2 grams. Machined valve reliefs and circlip grooves; LR 63 lock rings for floated applicationsFrom pistons to engine bearing components, Speed Pro offers an array of performance engine parts. You can rely on Speed Pro for industry leading performance engine technologies,