Mahle MS Piston Set GM LSX 417cid 4.075x1.110RCH 4.000 Stk 6.125 Rod .927 Pin -5.8cc 11.1CR Set of 8

What you get in this Mahle MS Piston Set are eight forged pistons, ready to be installed in your GM LSX engine. These are built for a 417 cubic inch displacement, featuring a 4.075 inch bore and a 4.000 inch stroke, designed to work with a 6.125 inch connecting rod and a 0.927 inch pin. The dish volume is -5.8cc, which helps achieve an 11.1:1 compression ratio with a stock stroke and rod combination. Each piston weighs in at 441 grams, indicating a solid construction suitable for demanding applications.

Mahle uses 2618 aluminum for these pistons, a material known for its strength and durability under high stress. This makes them a well-built choice for engine builds where performance and reliability are key. The 4.075 inch bore size is a common upgrade for LSX engines, allowing for increased displacement and potential power gains. The 1.110 inch compression height is specifically chosen to work with the 6.125 inch rod and 4.000 inch stroke to achieve the target compression ratio.

When building a high-performance engine, the pistons are a critical component. This Mahle set is designed to handle the stresses of increased cylinder pressures and temperatures. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures, especially regarding ring gap and bearing clearances.