Speed Pro Hypereutectic Piston 4.060" Bore 5/64 x 5/64 x 3/16" Ring Grooves Minus 5.0 cc - Coated Skirt 4031 The choice of professional racers

The choice of professional racers and off-road enthusiasts around the world

Quick Fuel Technology E-85 Fuel Sample Test Tube Kit 36-E85

111 in Long

Wet / Dry Dual Clutch Transmissions

50in tailpipes

Speed Pro Hypereutectic Piston 4.060" Bore 5/64 x 5/64 x 3/16" Ring Grooves Minus 5.0 cc - Coated Skirt 4031 The choice of professional racersChevrolet Small Block Sophisticated "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