Speed Pro Hypereutectic Piston 4.060" Bore 5/64 x 5/64 x 3/16" Ring Grooves Plus 12.3 cc - Coated Skirt M59XX1 Convoluted bumper prevents shock from

Convoluted bumper prevents shock from bottoming out

Part of a Fully Engineered Swap System that Provides Optimized Component Clearances and Drivetrain / U-Joint Operation Angles

They are made of cast iron and install into the exhaust crossover without any modifications

Hub Seal / Spindle Nut / Dust Cap / Cotter Pin

Straight stemmed XH-424 stainless exhaust valves and NK-841 stainless intake valves have chrome stems

Speed Pro Hypereutectic Piston 4.060" Bore 5/64 x 5/64 x 3/16" Ring Grooves Plus 12.3 cc - Coated Skirt M59XX1 Convoluted bumper prevents shock fromProduct Description: Piston Hypereutectic 4. 060 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