Manley BMW N55/S55 37cc Platinum Series Dish Extreme Duty Piston Set

This set includes Manley's Platinum Series pistons, designed for BMW N55 and S55 engines. You'll receive the pistons themselves, along with the included tool steel wrist pins and moly skirt coatings where applicable. These are a significant upgrade for anyone rebuilding or significantly modifying their engine, aiming for improved strength and longevity under demanding conditions.

Manley uses domestic 2618 alloy forgings for these pistons, which are known for their superior strength and ability to handle high performance applications. The pistons feature proven cam and barrel skirt profiles, which help generate power while also being designed to be gentle on your cylinder walls. They also incorporate exacting standards for ring lands and grooves, which is crucial for achieving a good ring seal and maximizing the power your engine can make. Manley's unique fixturing process allows them to machine the skirt and ring grooves in a single operation, ensuring the ring grooves are perfectly square to the skirt for optimal performance.

When you're building a high-performance BMW engine, especially one that will see track time or significant power increases, using well-built internal components like these pistons is essential. They are built to handle the stresses that come with increased boost and RPMs. Keep in mind 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.