Mahle MS Piston Set BBC 508ci 4.500in Bore 4.00in Stroke 6.385in Rod 0.990 Pin -3cc 8.9 CR Set of 8

Mahle is a well-known name in engine components, and their MS Piston Set is built for serious performance builds. This set is specifically designed for Big Block Chevy engines displacing 509 cubic inches, featuring a 4.500-inch bore and a 4.000-inch stroke. If you're rebuilding a high-performance Big Block, these pistons are a solid choice to consider for the heart of your engine.

These pistons are forged from 4032 aluminum, a material chosen for its strength and durability under high stress. They feature a flat-top design with a -3.4cc dish, which helps achieve a compression ratio of 8.9:1 when paired with the correct cylinder heads and gasket combination for a standard deck height of 9.800 inches. The included 0.990-inch pins are designed to handle the forces involved in a powerful V8. Each piston weighs in at 542 grams, contributing to a well-balanced rotating assembly.

This set includes eight pistons, ready for installation in your Big Block Chevy. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.