Mahle MS Piston Set BBC 555ci 4.560in Bore 4.25in Stroke 6.385in Rod 0.990 Pin -3cc 9.6 CR Set of 8

This Mahle MS Piston Set is built for Big Block Chevy 555 cubic inch engines. You get a complete set of eight pistons, designed to work with a 4.560-inch bore and a 4.250-inch stroke, using a 6.385-inch connecting rod and a 0.990-inch pin. These pistons feature a flat top design with a -3.4cc dish, which helps achieve a 9.6:1 compression ratio on a standard deck height engine. They are constructed from 4032 aluminum, a material known for its strength and ability to handle higher temperatures and pressures, making it a solid choice for performance builds.

The 4032 aluminum alloy offers good thermal expansion properties, which means these pistons are well-suited for performance applications where tighter tolerances are needed. Each piston weighs in at 544 grams, contributing to a balanced rotating assembly. This set is intended for Big Block Chevy applications with a standard deck height of 9.800 inches. It's important to note that this piston set is not CARB approved and cannot be shipped to California.