Mahle MS Piston Set BBC 505ci 4.350in Bore 4.25in Stroke 6.385in Rod .990 Pin 43cc 13.2 CR Set of 8

If you're building a high-performance Big Block Chevy engine, this Mahle MS Piston Set is a solid choice for your 505 cubic inch application. These pistons are designed for a 4.350-inch bore and are engineered to work with a 4.250-inch stroke crankshaft and a 6.385-inch connecting rod, featuring a .990-inch pin diameter. The 43cc dome volume contributes to a 13.2:1 compression ratio, which is ideal for naturally aspirated performance builds where maximum power is the goal.

Mahle is known for well-built engine components, and this set is no exception. The pistons are constructed from a strong 2618 aluminum alloy, a material commonly used in performance applications due to its excellent strength-to-weight ratio and ability to withstand high temperatures and pressures. Each piston weighs in at 613 grams, helping to keep reciprocating assembly weight manageable for better engine response. This set includes pistons for a standard deck height of 9.800 inches, ensuring proper deck clearance with your block.

This piston set is intended for competition or off-road use and is not CARB approved, meaning it cannot be shipped to California. It's important to note that this is a performance part, and proper engine assembly, balancing, and tuning are critical for optimal performance and longevity. Ensure you have the correct supporting components, such as rings and wrist pins, which are typically sold separately, to complete your engine build.