Mahle MS Piston Set BBC 540ci 4.500in Bore 4.25in Stroke 6.385in Rod .990 Pin 13cc 10.5 CR Set of 8

This Mahle MS Piston Set includes eight forged pistons designed for Big Block Chevy engines displacing 540 cubic inches. These pistons feature a 4.500-inch bore and a 4.25-inch stroke, intended for standard deck height blocks. The 13cc dome volume, combined with a 6.385-inch rod length and a .990-inch pin diameter, helps achieve a 10.5:1 compression ratio, making them suitable for performance builds where a specific compression target is desired.

Constructed from 4032 aluminum alloy, these pistons are well-built for demanding applications. The 4032 alloy is known for its strength and durability, offering good thermal expansion properties that help prevent piston slap and maintain a tight piston-to-wall clearance. Each piston weighs approximately 548 grams, contributing to a balanced rotating assembly. This set is engineered to work with a 9.800-inch standard deck height block, simplifying installation for engine builders familiar with this common configuration.

It's important to note that this piston set is not CARB approved and cannot be shipped to California. Always consult your engine builder or Mahle's technical documentation for specific installation requirements and compatibility with other engine components to ensure optimal performance and longevity.