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 1966-1981 Pontiac Laurentian

1966-1981 Pontiac Laurentian

1980-1986 Mercury Cougar

and the big 24-oz

These easy to use

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 1966-1981 Pontiac LaurentianSophisticated "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,