Mahle MS Piston Set SBC 381ci 4.165in Bore 3.480/3.5stk 6.125in Rod .927 Pin -5cc 11.0 CR Set of 8

This Mahle MS Piston Set is designed for Chevrolet Small Block engines displacing 379 cubic inches. What you get in this set are eight forged pistons, each featuring a 4.165-inch bore, a -5cc dish volume, and a 0.927-inch pin diameter. These pistons are built to work with a 3.480-inch or 3.500-inch stroke crankshaft and a 6.125-inch connecting rod, aiming for an 11.0 compression ratio. Each piston weighs approximately 450 grams.

These pistons are forged from 4032 aluminum, a material known for its strength and durability, making them a solid choice for performance builds. The -5cc dish volume is specifically designed to achieve an 11.0:1 compression ratio when paired with the correct cylinder heads and gasket combination, offering a noticeable bump in power over stock configurations. The 4.165-inch bore size is a common specification for stroker small block Chevy builds, allowing for increased displacement and torque.

When rebuilding or upgrading your engine, these Mahle pistons offer a well-built foundation. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed installation instructions for proper fitment and assembly procedures, especially regarding ring gap, bearing clearance, and piston-to-wall clearance.