Mahle MS Piston Set GM LS 364ci 4.000in Bore 3.622in Stk 6.125in Rod .927 Pin -4cc 10.5 CR Set of 8

If you're rebuilding the top end of your GM LS engine for improved performance, a solid set of pistons is crucial. This Mahle MS Piston Set is built for 364 cubic inch LS engines, featuring a 4.000-inch bore and a 3.622-inch stroke. These pistons are designed to work with LS1, LS2, and LS6 style cathedral port heads, offering a 10.5:1 compression ratio with their -4cc dish volume. This specific setup is ideal for naturally aspirated or forced induction builds where you need reliable components that can handle increased stress.

Mahle uses 4032 aluminum for these pistons, which is a well-known material for performance applications because it offers a good balance of strength and thermal expansion properties. This helps ensure the pistons can withstand the heat and pressure generated in a performance LS engine. The pistons come with a 0.927-inch pin and are designed for a 6.125-inch connecting rod, fitting right into many popular LS engine configurations. Each piston weighs in around 430 grams, contributing to a balanced rotating assembly.

This set includes all eight pistons needed for a complete engine rebuild. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures, especially when dealing with critical engine components like pistons.