Mahle MS Piston Set Ford 557ci 4.44in Bore 4.500in Stroke 6.7in Rod 0.990 Pin -3cc 12.7 CR Set of 8

If you're building a high-performance Ford Big Block engine, getting the right pistons is crucial for power and reliability. This Mahle MS piston set is designed for Ford 557 cubic inch engines, offering a solid foundation for serious builds. These pistons are forged from 2618 aluminum, a strong material that can handle the high stresses of performance applications. They feature a 4.440-inch bore and are designed to work with a 4.500-inch stroke and a 6.700-inch connecting rod, with a 0.990-inch pin diameter. The -3cc dish volume contributes to a 12.7:1 compression ratio, which is ideal for naturally aspirated performance builds seeking maximum power.

Mahle is a well-known name in engine components, and these MS series pistons reflect that reputation. The forged construction means they are significantly stronger than cast pistons, making them a reliable choice for engines that will see hard use. Each piston weighs in at 564 grams, which is a good balance for strength and rotational mass. The 4.440-inch bore size is specific for certain Ford Big Block configurations, ensuring a proper fit when paired with the correct cylinder block. This set includes all eight pistons needed for a V8 engine.

When undertaking a performance engine build of this caliber, it's important to consider all the components that work together. These pistons are designed for a specific combination of stroke and rod length to achieve the target compression ratio. Remember that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed specifications and installation guidelines to ensure proper fitment and performance for your specific engine build.