Mahle MS Piston Set BBC 498ci 4.320in Bore 4.25in Stroke 6.385in Rod .990 Pin 43cc 13.0 CR Set of 8

This is a set of eight Mahle MS forged pistons designed for Big Block Chevy 498 cubic inch engines. These pistons are built for a standard deck height of 9.800 inches and feature a 4.320-inch bore with a 4.250-inch stroke, commonly found in performance Big Block Chevy applications. Mahle is a well-known name in engine components, and this set is intended for builders looking for solid internals for a performance engine build.

Each piston in this set is forged from 2618 aluminum, a strong material often chosen for high-performance pistons due to its durability under extreme conditions. They have a dome volume of 43cc, which, when combined with the specified bore and stroke, results in a 13.1:1 compression ratio with a 6.385-inch connecting rod. The included wrist pin is 0.990 inches in diameter. These pistons weigh approximately 600 grams each, which is typical for forged pistons of this size and intended use.

This piston set is intended for custom engine builds where precise component matching is key to achieving desired performance. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Ensure you have the correct connecting rods and crankshaft for your build, as these pistons are designed for a specific combination to achieve the stated compression ratio and displacement.