Mahle MS Piston Set BBC 498ci 4.320in Bore 4.25in Stroke 6.385in Rod .990 Pin 18cc 10.3 CR Set of 8

Built from 4032 aluminum alloy, this Mahle MS piston set is designed for Big Block Chevy 498 cubic inch engines with a standard deck height. The pistons feature a 4.320-inch bore and are designed to work with a 4.250-inch stroke crankshaft and a 6.385-inch connecting rod, utilizing a 0.990-inch pin. This combination results in a 10.3:1 compression ratio, a notable bump over stock, making them suitable for performance builds where increased power is desired.

Each piston in this set weighs 543 grams and includes an 18cc dome volume. The 4032 aluminum alloy is chosen for its strength and durability, offering good resistance to detonation and thermal expansion, which is crucial for high-performance applications. The set comes complete with eight pistons, ready for installation in your engine rebuild. Remember that these pistons are not CARB approved and cannot be shipped to California. Always refer to manufacturer instructions for proper installation and break-in procedures.