Mahle MS Piston Set Chevrolet LS1/2/6 5.3L 326ci 3.790in Bore 3.622in Stk 10:1 CR -2.1cc Set of 8

Built from 2618 aluminum alloy, these Mahle MS pistons are designed for serious performance builds in Chevrolet LS1, LS2, and LS6 engines. With a bore of 3.790 inches and a stroke of 3.622 inches, they are specifically sized for the 327 cubic inch (5.3L) displacement, aiming for a 10.0:1 compression ratio with a -2.1cc valve relief volume. This combination is a solid choice for those rebuilding or upgrading their engine's top end, looking for a well-built component that can handle increased stress.

The 2618 aluminum alloy is known for its strength and durability under high temperatures and pressures, making it a popular choice for performance pistons. Each piston weighs in at 428 grams, contributing to a balanced rotating assembly. The 0.927-inch pin diameter is standard for many LS applications, and the 1.299-inch compression height (CH) works with a 6.125-inch connecting rod to achieve the target compression ratio. Mahle's manufacturing expertise ensures these pistons fit right and perform reliably when installed correctly.

This set includes eight pistons, providing a complete solution for a V8 engine. Please note 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 proper fitment and assembly procedures.