Mahle MS Piston Set BBM 540ci 4.375in Bore 4.50in Stroke 7.1in Rod 0.990 Pin -8cc 12.3 CR Set of 8

Mahle is a well-known name in engine components, recognized for their expertise in piston technology. This Mahle MS Piston Set is built for high-performance applications, specifically designed for Chrysler Big Block engines displacing 541 cubic inches. If you're building a serious performance engine, these pistons are engineered to handle the demands of increased power and stress.

This set features pistons with a 4.375-inch bore and a 4.50-inch stroke, paired with a 7.1-inch rod length. They utilize a 0.990-inch pin and have a dish volume of -8.1cc, which results in a 12.3:1 compression ratio. The pistons themselves are constructed from 4032 aluminum, a material chosen for its strength and thermal expansion properties, making it suitable for high-performance street and race applications. Each piston weighs approximately 510 grams, contributing to a well-balanced rotating assembly.

When installing these pistons, remember they are designed for a specific engine configuration and require careful attention to clearances and assembly procedures. Due to their high compression ratio and specific design, they are not CARB approved and cannot be shipped to California. Ensure you consult your engine builder or a professional mechanic for proper installation and tuning to get the most out of this performance piston set.