Mahle MS Piston Set GM LS 428ci 4.07in Bore 4.1in Stk 6.125in Rod .927 Pin -8cc 10.8 CR Set of 8

Mahle is a well-known name in engine components, and they're particularly recognized for their high-performance pistons. This set of eight Mahle MS pistons is built for GM LS engines looking to achieve 428 cubic inches of displacement. If you're rebuilding your top end for serious power, these pistons are a solid foundation.

These pistons are forged from 4032 aluminum, a material chosen for its strength and ability to handle high temperatures and pressures common in performance applications. They feature a 4.070-inch bore and are designed to work with a 4.125-inch stroke crankshaft and a 6.125-inch connecting rod. The piston dish has a volume of -8.0cc, which, when combined with the other engine components, results in a 10.8:1 compression ratio. This specific compression ratio is often sought after for a good balance of power and pump gas drivability in modified LS engines. The wrist pin diameter is 0.927 inches, a standard size for many performance connecting rods. Each piston weighs approximately 434 grams, contributing to a well-balanced rotating assembly.

This set includes eight pistons, enough for a complete engine build. Please note that these pistons are not CARB approved and cannot be shipped to California. They also carry a Prop 65 warning. Ensure you have the correct connecting rods, crankshaft, and rings to match these specifications for a successful engine build.