Mahle MS Piston Set GM LSX 447cid 4.155x1.050RCH 4.125 Stk 6.125 Rod .927 Pin -5.8cc 11.8CR Set of 8

Built from forged 2618 aluminum, this Mahle MS piston set is designed for serious GM LSX engine builds, specifically for the 447 cubic inch displacement. The material choice is key here; forged aluminum is much stronger and more durable than cast aluminum, making it ideal for engines that will see high performance demands and significant stress. This strength allows for tighter tolerances and better heat management, which are critical for preventing piston failure under load.

Each piston in this set features a 4.155-inch bore and a -5.8cc dish volume, contributing to an 11.8:1 compression ratio when paired with a 4.125-inch stroke crankshaft and a 6.125-inch connecting rod. The pin diameter is 0.927 inches. These specifications are carefully balanced to optimize power output and efficiency for naturally aspirated or forced induction applications. The pistons weigh in at 450 grams each, a well-balanced weight that helps reduce reciprocating mass for improved engine response without sacrificing strength.

This set includes eight pistons, all necessary hardware for installation, and is a direct fit for Chevrolet LSX 447 cubic inch engines. Please note that these pistons are not CARB approved and cannot be shipped to California. It's always a good idea to consult your engine builder or a qualified mechanic to ensure these pistons align with your specific build goals and other component choices.