Manley Performance Coated Extreme Pistons 6.4L HEMI 4.090in Bore - Set of 8: Chrysler 300 (05-15) / Dodge Ram 1500 (03-10)

Manley Performance Extreme Coated Pistons

Chrysler 6.4L HEMI V8

598900CE-8

Overview:

The Manley Chrysler HEMI 6.4L Extreme Coated Pistons are a high-performance forged piston set designed specifically for the 6.4L HEMI engine platform. Crafted to meet the demands of professional engine builders and serious enthusiasts, these pistons deliver exceptional strength, durability, and precision fitment for your build.

Whether you are assembling a high-output street engine, a track-focused powerplant, or a reliable performance upgrade, these pistons provide the foundation for improved combustion efficiency and long-term reliability under increased power levels.

With a 4.090-inch bore and 1.210-inch compression height, these pistons feature a -12.5cc dish design to optimize combustion chamber volume and support your desired compression ratio. The set includes eight pistons, perfect for a V8 application.

Key Features:

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

• Forged from 2618 aluminum alloy, known for excellent strength and fatigue resistance under high stress.
• Proven cam and barrel skirt profiles reduce friction and wear for enhanced longevity.
• Tool steel wrist pins provide robust connection between piston and connecting rod, ensuring durability at high RPMs.
• Moly skirt coatings on select part numbers reduce friction and improve piston ring seal.
• 12.5cc dish piston design optimizes combustion chamber volume for precise compression control.
• Coated piston surfaces enhance heat resistance and reduce scuffing in demanding operating conditions.
• Precision machining ensures consistent bore and compression height for reliable engine assembly.
• Designed specifically for Chrysler 6.4L HEMI engines with a 4.090-inch bore size.

Construction & Design:

These pistons are manufactured using 2618 alloy forgings, a premium aluminum alloy favored in high-performance and racing applications for its superior strength and thermal properties. The forging process results in a dense, uniform grain structure that withstands extreme combustion pressures and temperatures.

The pistons feature carefully engineered cam and barrel skirt profiles that minimize friction between the piston and cylinder walls, reducing wear and improving efficiency. The moly skirt coating further enhances this effect by providing a low-friction surface that helps maintain ring seal and reduces piston slap noise.

Tool steel wrist pins are used to connect the pistons to the connecting rods, offering high strength and resistance to bending or deformation under high RPM and load conditions. The coated piston surfaces improve heat dissipation and protect against scuffing, contributing to longer engine life and consistent performance.

Installation & Fitment:

This piston set is designed as a direct fit for Chrysler 6.4L HEMI engines with a 4.090-inch bore and 1.210-inch compression height. The -12.5cc dish volume is engineered to complement specific combustion chamber designs and compression ratios.

Installation requires standard engine assembly procedures and precision machining of the block bore to the specified size. No special modifications beyond typical engine build practices are necessary.

• Set of 8 pistons for complete V8 rebuild
• Compatible with Chrysler 6.4L HEMI engines
• Requires proper ring and pin installation per engine specifications

What’s Included

• Set of 8 forged 2618 alloy pistons with -12.5cc dish
• Tool steel wrist pins
• Coated piston skirts for reduced friction

Ideal For:

• Performance enthusiasts building high-output 6.4L HEMI engines
• Professional engine builders seeking durable, race-proven pistons
• Street and track applications requiring reliable forged pistons
• Rebuilds aiming to improve engine strength and longevity under increased boost or power