Mahle MS Piston Set BBM 505ci 4.350in Bore 4.25in Stroke 7.1in Rod 0.990 Pin -8cc 11.5 CR Set of 8

If you're building a high-performance Chrysler Big Block engine, this Mahle MS Piston Set is a solid choice for your 505 cubic inch application. These pistons are forged from 4032 aluminum, a material known for its strength and ability to handle the stresses of a performance engine. They are designed with a 4.350-inch bore and a 4.250-inch stroke, working with a 7.100-inch connecting rod and a 0.990-inch wrist pin. The -8.1cc dish volume, combined with other engine components, aims for an 11.5:1 compression ratio, which is great for naturally aspirated builds looking for good power.

Mahle is a well-known name in engine components, and this set reflects their focus on performance. Each piston weighs in at 519 grams, which is a good balance for strength and rotational mass. The 4032 aluminum alloy offers improved strength and thermal expansion properties compared to older 2618 alloys, making it a popular choice for performance street and strip applications. This set includes all eight pistons needed for a V8 engine, along with the wrist pins.

Keep in mind that these pistons are not CARB approved and cannot be shipped to California. Always refer to your engine builder's specifications and the manufacturer's installation instructions for precise assembly details, especially regarding ring gap and piston-to-wall clearance.