Mahle MS Piston Set BBC 531ci 4.600in Bore 4.00in Stroke 6.385in Rod 0.990 Pin -3cc 9.2 CR Set of 8

If you're building a high-performance Big Block Chevy engine, this Mahle MS Piston Set is designed for serious power. This set is specifically for BBC engines displacing around 531 cubic inches, featuring a 4.600-inch bore and a 4.000-inch stroke, intended for a standard deck height block. These pistons are crafted from 4032 aluminum, a material known for its strength and thermal expansion properties, making it a solid choice for demanding builds.

Each piston in this set has a -3.4cc dish volume, which, when combined with the other specified dimensions and a typical 118cc combustion chamber, helps achieve a 9.2:1 compression ratio. This compression ratio is well-suited for naturally aspirated or forced induction applications where reliable power is the goal. The pistons weigh in at 565 grams each and come with a 0.990-inch pin, designed to work with a 6.385-inch connecting rod. Mahle's reputation for well-built engine components means you're getting a set that's made to perform under pressure.

This set includes eight pistons, enough for a complete V8 engine. Please note that these pistons are not CARB approved and cannot be shipped to California due to emissions regulations. Always consult your engine builder or Mahle's specifications for detailed installation requirements and compatibility with other engine components.