Mahle MS BMW N54 B30 3.0L 84.00mm x 31.7mm CH 21.5cc 308g 9.5CR Pistons (Set of 6)

This set includes six Mahle MS forged pistons, designed specifically for BMW N54 3.0L engines. Each piston measures 84.00mm in bore diameter and features a 31.7mm compression height, contributing to a 9.5:1 compression ratio. These pistons are constructed from 2618 aluminum, a well-known material for its strength and durability in high-performance applications. The pistons weigh 308g each and have a dish volume of -21.5cc, which is crucial for achieving the target compression ratio when paired with the correct cylinder head and gasket combination for the 89.6mm stroke and 145.05mm rod length.

Mahle's MS series pistons are built for demanding engine builds where reliability and performance are paramount. The forged construction offers significantly improved strength over cast pistons, making them resistant to deformation under high cylinder pressures and temperatures. This is essential for boosted or high-revving N54 engines that often push beyond stock performance limits. The 22mm wrist pin diameter ensures a solid connection to the connecting rod, further enhancing the piston's ability to withstand stress.

When rebuilding or significantly upgrading your N54 engine, these Mahle pistons are a solid option for ensuring the bottom end can handle increased power. It's important to note that this specific piston set is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed installation instructions for proper fitment and assembly procedures, including ring installation and cylinder wall preparation.