Mahle MS Piston Set GM LS 377ci 4.070in Bore 3.622in Stk 6.125in Rod .927 Pin 12cc 12.2 CR Set of 8

This Mahle MS Piston Set includes eight forged pistons designed for GM LS engines displacing 377 cubic inches. These pistons feature a 4.070-inch bore and a 3.622-inch stroke, with a 6.125-inch rod length and a .927-inch pin diameter. The 12cc combustion chamber volume results in a 12.2:1 compression ratio, making this set ideal for performance builds where increased compression is desired.

Crafted from 2618 aluminum, these pistons are built for strength and durability under demanding conditions. Each piston weighs approximately 492 grams, contributing to a well-balanced rotating assembly. The 4.070-inch bore is a common size for stroker LS engines, and the 12.2:1 compression ratio is a notable step up from stock, offering improved power potential when paired with appropriate camshafts and cylinder heads. This set is designed for a direct fit into compatible LS engine blocks, simplifying the rebuild process.

When rebuilding your LS engine with these Mahle pistons, ensure you have the correct supporting components. This includes appropriate piston rings, connecting rod bolts, and cylinder head gaskets to achieve the target compression ratio and ensure proper sealing. Please note that this piston set is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for precise details on fitting and assembly.