Speed Pro Hypereutectic Piston 4.030" Bore 5/64 x 5/64 x 3/16" Ring Grooves Minus 16.0 cc - Coated Skirt Car Care & Detailing Cups feature a bronze bushing

Cups feature a bronze bushing

Chevrolet: Del Ray 58 - 58 4

750 / Two 1

Up to 12 in Wide Tires

12-3/4 in Square

Speed Pro Hypereutectic Piston 4.030" Bore 5/64 x 5/64 x 3/16" Ring Grooves Minus 16.0 cc - Coated Skirt Car Care & Detailing Cups feature a bronze bushingSophisticated "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,