Mahle MS Piston Set BBM 499ci 4.375in Bore 4.15in Stroke 6.76in Rod 0.990 Pin -8cc 11.4 CR Set of 8

This is a set of eight Mahle forged pistons designed for Big Block Mopar engines, specifically for builds around 499 cubic inches. These pistons feature a 4.375-inch bore and are intended for use with a 4.150-inch stroke crankshaft and a 6.760-inch connecting rod. The -8.1cc dish volume combined with the other dimensions results in a 11.4:1 compression ratio, making them suitable for performance-oriented engine builds where higher compression is desired.

Mahle has constructed these pistons from 4340 aluminum, a material known for its strength and durability under high stress. Each piston weighs approximately 466 grams, which is a reasonable weight for a forged piston of this size. The 0.990-inch pin diameter is standard for many performance applications. These pistons are designed as a flat-top piston for the 383 and 400 Mopar engine blocks, but are sized for a 499 cubic inch displacement, indicating they are for a stroker build.

When building a high-performance engine, the pistons are a critical component. Mahle is a well-known name in engine components, and this set offers a solid foundation for a powerful Big Block Mopar. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. Always consult your engine builder or a qualified mechanic to ensure these pistons are the right choice for your specific build and to confirm all necessary supporting components are accounted for.