Speed Pro Hypereutectic Piston 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves Plus 12.3 cc - Coated Skirt AS04421 Our results were crystal clear

Our results were crystal clear

Very strong mid-range torque and throttle response

fuel filter/pump billet bracket

Adjustable Length Fits All Dual Inlet Holley Carburetors (up to 4500 Series)

Hook the steel springs into provided hole and connect to a lower chassis location

Speed Pro Hypereutectic Piston 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves Plus 12.3 cc - Coated Skirt AS04421 Our results were crystal clearProduct Description: Piston Hypereutectic 4. 040 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Minus 12. 30 cc Coated Skirt Small Block Chevy Set of 8 From 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, from cutting edge Digital Diamond Profiled pistons to A Series bearings. They are engine components performance enthusiasts and