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 Fits all popular 5-1/8" diameter

Fits all popular 5-1/8" diameter carburetors and includes a black anodized knurled nut

VanRug is stain resistant and holds up to harsh chemicals

1980-1986 Mercury Cougar

1966-1981 Pontiac Laurentian

and the big 24-oz

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 Fits all popular 5-1/8" diameterSophisticated "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,