Speed Pro Hypereutectic Piston 4.310" Bore 5/64 x 5/64 x 3/16" Ring Grooves Plus 10.5 cc - Coated Skirt BR40003 Clamps / Grommets / Shrink

Clamps / Grommets / Shrink Sleeves Included

Windsor Ford w/Jesel

1963-1966 GMC 3500

610" OD and fit applications with 11/32" valves and

For separating

Speed Pro Hypereutectic Piston 4.310" Bore 5/64 x 5/64 x 3/16" Ring Grooves Plus 10.5 cc - Coated Skirt BR40003 Clamps / Grommets / ShrinkSophisticated "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,