Mahle MS Piston Set BBF 557ci 4.44in Bore 4.5in Stroke 6.7in Rod 0.990 Pin -38cc 9.9 CR Set of 8

This Mahle MS Piston Set includes eight forged pistons designed for Ford Big Block engines displacing 533 cubic inches. These pistons feature a 4.440-inch bore and are built to work with a 4.500-inch stroke crankshaft and a 6.800-inch connecting rod. The set includes 0.990-inch wrist pins and has a -38cc dish volume, which results in a 9.5:1 compression ratio with the specified components. Each piston weighs approximately 527 grams.

Crafted from 4032 aluminum alloy, these pistons are well-built for demanding engine builds. The 4032 alloy offers a good balance of strength and thermal expansion properties, making it suitable for high-performance applications where reliability is key. The -38cc dish is designed to achieve a specific compression ratio, crucial for tuning engine performance and efficiency. This set is a solid option for anyone rebuilding or upgrading a Ford Big Block engine where precise component matching is essential for optimal results.

Please note that this piston set is not CARB approved and cannot be shipped to California. It is also subject to California's Proposition 65 warning.