Mahle MS Piston Set BBF 502ci 4.39in Bore 4.15in Stroke 6.7in Rod 0.990 Pin -28cc 9.7 CR Set of 8

Forged from 4032 aluminum alloy, this Mahle MS piston set is built for serious performance in your Ford Big Block 502 cubic inch engine. The pistons feature a -28cc dish volume, which, when combined with a 4.150-inch stroke crankshaft and a 6.700-inch connecting rod, results in a 9.7:1 compression ratio. This specific compression ratio is a well-balanced choice for many performance applications, offering a good blend of power and pump gas compatibility, depending on your camshaft and cylinder head selection.

Each piston in this set weighs approximately 533 grams and is designed with a 4.390-inch bore diameter. The 0.990-inch wrist pin is a common size for many performance connecting rods, ensuring good compatibility. Mahle's expertise in piston manufacturing means these are well-made components designed to handle the stresses of a high-performance engine. The 4032 aluminum alloy is chosen for its strength and ability to withstand higher operating temperatures compared to cast aluminum, making it a solid choice for builds that see regular use or demanding conditions.

This set includes eight pistons, enough for a complete V8 engine build. Please note that these pistons are not CARB approved and cannot be shipped to California. Always consult your engine builder or a qualified professional to ensure these pistons are the right fit for your specific build goals and to confirm all necessary supporting components are accounted for during assembly.