Mahle MS Piston Set SBC 422ci 4.165in Bore 3.875in Stroke 6.0in Rod .927 Pin -5cc 12.1 CR Set of 8

These Mahle MS Series pistons are forged from 4032 aluminum, a material chosen for its strength and thermal expansion properties, making them a solid choice for high-performance Small Block Chevrolet builds aiming for a 422 cubic inch displacement. The 4.165-inch bore size is precisely machined, and combined with the 3.875-inch stroke and a 6.0-inch connecting rod, it helps achieve the target displacement. The -5cc dish volume contributes to a 12.1:1 compression ratio when paired with appropriate cylinder heads, offering a significant power increase over stock configurations.

Mahle's expertise in piston design is evident in the details. The 0.927-inch pin diameter is standard for many performance applications, and the overall weight of 432 grams per piston is optimized for balance and durability in demanding engine conditions. These pistons are built to handle the stresses of performance engines, whether for street use or track applications. It's important to note that these pistons are not CARB approved and cannot be shipped to California due to emissions regulations.

This set includes eight pistons, providing a complete solution for your engine rebuild. For optimal performance and longevity, ensure you consult the manufacturer's detailed installation instructions and consider pairing these pistons with high-quality connecting rods, rings, and bearings that meet the demands of your specific engine build.