Manley BMW N55/S55 37cc Platinum Series Dish Piston Set - 84.5mm Bore

• Chrome Moly Wrist Pins: Premium Chrome Moly wrist pins come standard with our Standard Series Pistons. For select SKUs, we offer wrist pin upgrades to 9310 and Turbo Tuff/DLC alloys, providing additional durability.
• Unique Fixturing: Manley's unique fixturing allows for skirt turning and ring groove machining in a single operation, ensuring ultimate ring groove to skirt squareness.
• Exacting Ring Lands and Grooves: We adhere to strict standards for piston ring lands and grooves, resulting in enhanced ring seal and more power.
• Cam and Barrel Profiles: Our pistons boast cam and barrel (skirt) profiles that generate substantial power while being gentle on cylinder walls.
• 2618 Alloy Forgings: We use domestic 2618 alloy forgings, ensuring superior strength and performance.

Upgrade your BMW engine with the Manley Performance Platinum Series Dish Piston Set, designed specifically for N55 and S55 models with an 84.5mm bore. Crafted from high-strength 2618 alloy forgings, these pistons deliver exceptional durability and performance for demanding applications. The pistons feature proven cam and barrel skirt profiles that optimize power output while maintaining gentle contact with cylinder walls, helping to increase efficiency and longevity. Each piston is engineered with precision ring lands and grooves to ensure excellent ring seal, which translates into improved compression and overall engine power. Manufactured with advanced fixturing techniques, the pistons are machined to achieve perfect ring groove to skirt squareness, providing consistent performance and fitment. The inclusion of premium chrome moly wrist pins as standard enhances durability, with options for upgraded alloys such as 9310 or Turbo Tuff/DLC for even greater strength in high-performance setups.

Designed with professional engine builders and tuners in mind, these pistons incorporate moly skirt coatings on select part numbers to reduce friction and wear under extreme conditions. The design also emphasizes strict quality standards, ensuring each piston maintains precise ring lands and grooves for optimal sealing and power. Compatibility with various tuning and modification needs makes the Manley Platinum Series pistons a reliable choice for performance enthusiasts seeking to maximize their engine’s potential. Please note that these pistons are not carburetor approved and require acknowledgment of this specification prior to installation. Engine builders appreciate the detailed engineering and high-quality materials that go into every set, making them a trusted choice for serious performance upgrades and custom engine builds.

Features:

• High-performance 2618 alloy forgings for superior strength and durability

• Proven cam and barrel skirt profiles designed for optimal power and minimal wear

• Premium chrome moly wrist pins included, with upgrade options available

• Advanced fixturing ensures precise ring groove to skirt alignment

• Strictly machined ring lands and grooves for enhanced sealing and power transfer