Mahle MS Piston Set GM LSX 404cid 4.010x1.110RCH 4.0 Stk 6.125 Rod .927 Pin -14cc 10.0CR - Set of 8

Mahle's MS Piston Set is built for serious GM LSX builds, specifically targeting the 404 cubic inch displacement. These pistons are forged from 2618 aluminum, a strong material chosen for its ability to handle high cylinder pressures and temperatures common in performance applications. The 4.010 inch bore size is a common overbore for many LS engine blocks, and the 1.110 inch compression height works with a 6.125 inch connecting rod and a 4.000 inch stroke to achieve a 10.0:1 compression ratio with the -14cc dish volume. This specific compression ratio is a well-regarded target for naturally aspirated or forced induction builds, offering a good balance of power and pump gas compatibility.

Each piston weighs in at 402 grams, which is a reasonable weight for a forged piston of this size, contributing to good reciprocating assembly balance. The 0.927 inch wrist pin diameter is standard for many performance LS applications, ensuring compatibility with a wide range of connecting rods. Mahle is a well-known name in engine components, and this piston set reflects their commitment to providing durable parts for high-performance engines. They are designed to fit right into your LS engine build, making them a solid option when you're looking to upgrade your engine's internals for more power and reliability.

When planning your engine build, remember 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 trusted mechanic to ensure these pistons align with your specific build goals and other component choices, such as camshaft selection and cylinder head volume.