Mahle MS Piston Set BBC 489ci 4.280in Bore 4.25in Stroke 6.385in Rod .990 Pin 18cc 10.1 CR Set of 8

If you're building a high-performance Big Block Chevy engine, especially a 489 cubic inch stroker, getting the right pistons is crucial. This set from Mahle is built for serious power, designed to handle the demands of a performance build where reliability and output are key.

These are Mahle's MS series pistons, forged from 4032 aluminum for a strong yet lightweight component. They're designed for a 4.280-inch bore and feature an 18cc dome volume, which helps achieve a 10.1:1 compression ratio with a 4.250-inch stroke and a 6.385-inch rod. The 0.990-inch pin size is standard for many performance applications. Weighing in at 527 grams, these pistons offer a good balance of strength and reduced reciprocating mass, which is important for engine longevity and high RPM capability.

This set includes eight pistons, enough for a complete V8 engine. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a build of this caliber, ensuring proper balancing and assembly by a qualified engine builder is recommended to get the most out of these Mahle pistons.