Manley Performance Platinum Series Pistons

Chrysler 300C / Dodge Charger / Magnum 05-08 5.7L Hemi

597405C-8

Overview:

The Manley Performance Platinum Series Piston Set is engineered specifically for Chrysler 5.7L HEMI engines, offering a precise combination of bore and stroke dimensions to optimize performance and reliability. Designed for professional engine builders, tuners, and serious enthusiasts, these pistons provide a robust foundation for high-performance builds and rebuilds.

Whether you are upgrading your engine for street performance, track use, or heavy-duty applications, these pistons deliver the durability and strength required to handle increased power and demanding conditions. You’ll benefit from improved combustion efficiency and long-lasting wear resistance, helping your engine maintain peak performance over time.

Key Features:

Manley’s Platinum Series pistons incorporate advanced materials and design features to ensure superior strength and performance:

• Forged from premium 2618 aluminum alloy, known for excellent fatigue resistance and toughness under high stress.
• Proven cam and barrel skirt profiles reduce friction and wear, enhancing piston stability and longevity.
• Tool steel wrist pins provide exceptional strength and durability for reliable piston-to-connecting rod connection.
• Moly skirt coatings on select part numbers reduce friction and improve break-in characteristics.
• 9.3cc dome design optimizes combustion chamber shape for improved power and efficiency.
• Precisely machined to 3.922-inch bore and 3.579-inch stroke specifications for exact fitment in Chrysler 5.7L HEMI engines.
• Designed to withstand high cylinder pressures and temperatures typical of performance and forced induction applications.

Construction & Design:

Each piston in the Platinum Series is meticulously crafted using 2618 forged aluminum alloy, a material favored in high-performance engine components for its superior strength and resistance to thermal expansion. The forged construction ensures a dense, uniform grain structure that enhances durability under extreme operating conditions.

The skirt profiles have been optimized through extensive testing to reduce piston slap and friction, contributing to smoother engine operation and longer component life. Tool steel wrist pins are precision-fitted to provide a secure and wear-resistant pivot point between the piston and connecting rod.

The molybdenum coating applied to the skirts on select models further reduces friction during initial break-in and ongoing operation, helping to protect the cylinder walls and improve overall engine efficiency.

Installation & Fitment:

This piston set is designed as a direct replacement for Chrysler 5.7L HEMI engines with a 3.922-inch bore and 3.579-inch stroke configuration. It fits applications requiring a 9.3cc dome piston design to maintain proper compression ratios and combustion chamber geometry.

Installation should be performed by experienced engine builders or technicians familiar with forged piston assembly and engine rebuilding procedures. Proper ring end gap and clearance measurements are essential to ensure reliable operation and longevity.

What's Included:

• Complete set of forged 2618 aluminum alloy pistons with 9.3cc dome design
• Tool steel wrist pins
• Moly skirt coatings applied on select pistons

Ideal For:

• Performance enthusiasts upgrading or rebuilding Chrysler 5.7L HEMI engines
• Professional engine builders seeking durable, high-strength pistons
• Applications requiring improved combustion efficiency and durability under high stress
• Street, track, and forced induction builds demanding reliable piston performance

Manley Performance manufactures high-strength engine internals for serious builds—especially forged pistons, connecting rods, valves, and valvetrain components developed for racing and high-output street applications. If you’re building for boost, high compression, or sustained RPM, Manley is a common choice for parts engineered to take abuse and keep power reliable.