Mahle MS Piston Set GM LSX 415cid 4.065x1.110RCH 4.0 Stk 6.125 Rod .927 Pin -25cc 9.2CR - Set of 8

This Mahle MS Piston Set includes eight forged pistons designed for GM LSX engines displacing 415 cubic inches. These pistons feature a 4.065-inch bore and a -25cc dish volume, which helps achieve a 9.2:1 compression ratio when paired with a 4.000-inch stroke crankshaft and a 6.125-inch connecting rod. The wrist pin diameter is 0.927 inches. Mahle uses 2618 aluminum for these pistons, a material known for its strength and durability under high performance conditions. Each piston weighs approximately 425 grams. This set is a solid option for builders looking to assemble a robust naturally aspirated or forced induction LSX engine.

The 1.110-inch compression height on these pistons is crucial for proper deck clearance and valve timing, especially when working with specific crankshaft and rod combinations. Mahle's manufacturing process ensures tight tolerances, which is vital for engine longevity and performance. While these pistons are built for demanding applications, it's important to note they are not CARB approved and cannot be shipped to California. Always refer to your engine builder's specifications and Mahle's installation guidelines for proper assembly and break-in procedures to ensure optimal performance and reliability.