Manley Performance Platinum Series Pistons

Chrysler HEMI 6.4L (392) - 4.100" Bore +0.010 Oversize, 1.210" Compression Height, -12.5cc Dish

598910C-8

Overview:

The Manley Performance Platinum Series Pistons are precision-engineered forged pistons designed specifically for the Chrysler 6.4L HEMI engine. Crafted to exacting standards, these pistons provide a reliable upgrade for enthusiasts and professional engine builders seeking enhanced durability and performance in high-output applications.

Whether you are building a street performance engine, a track-focused powerplant, or a high-horsepower custom build, these pistons deliver the strength and consistency required to handle increased cylinder pressures and aggressive tuning.

With a -12.5cc dish volume and a +0.010" oversize bore specification, this set of eight pistons is ideal for engine rebuilds or upgrades that demand precise fitment and optimized combustion chamber characteristics for improved power and efficiency.

Key Features:

Manley’s Platinum Series Pistons incorporate advanced materials and design features that set them apart for performance and longevity:

• Forged from premium 2618 aluminum alloy for superior strength and fatigue resistance under high-stress conditions.
• Proven cam and barrel skirt profiles reduce friction and wear, enhancing piston stability and longevity.
• Equipped with tool steel wrist pins for maximum durability and secure piston-to-rod connection.
• Molybdenum skirt coatings on select part numbers reduce friction and improve break-in characteristics.
• 12.5cc dish design optimizes combustion chamber volume for desired compression ratio and detonation resistance.
• 1.210" compression height tailored for Chrysler 6.4L HEMI applications to ensure proper piston-to-valve clearance and ring positioning.
• +0.010" oversize bore dimension accommodates cylinder honing and rebuild tolerances for a precise fit.
• Set of 8 pistons included, covering all cylinders for a complete engine refresh or upgrade.

Construction & Design:

These pistons are forged using 2618 aluminum alloy, known for its excellent strength-to-weight ratio and high-temperature performance. The forging process ensures a dense, uniform grain structure that withstands the rigors of high-performance combustion and boost pressures.

The cam and barrel skirt profiles have been extensively tested and refined to reduce piston slap and improve ring seal, contributing to better oil control and reduced wear. Tool steel wrist pins provide a robust connection to the connecting rods, capable of handling high RPM loads without deformation.

Additionally, the moly skirt coatings applied to select pistons reduce friction during initial engine break-in and contribute to long-term durability by minimizing metal-to-metal contact.

Installation & Fitment:

This piston set is designed as a direct replacement for Chrysler 6.4L HEMI engines requiring a 4.100" bore with a +0.010" oversize. The 1.210" compression height and -12.5cc dish volume ensure compatibility with factory or aftermarket cylinder heads and maintain proper compression ratios.

Installation requires standard engine rebuild procedures including proper cylinder honing and ring fitting. No special modifications beyond typical rebuild practices are necessary.

• Fits Chrysler 6.4L HEMI engines with 4.100" bore +0.010" oversize
• Designed for use with compatible rods and rings matching the 1.210" compression height
• No custom machining beyond standard honing and balancing required

What's Included:

• Set of 8 forged 2618 aluminum alloy pistons
• Tool steel wrist pins installed
• Manufacturer packaging and identification

Ideal For:

• Performance engine builders upgrading Chrysler 6.4L HEMI powerplants
• Street and track enthusiasts seeking durable forged pistons for high-output applications
• Rebuilds requiring precise oversize bore pistons with optimized combustion chamber volume
• Engines running moderate to high boost or aggressive tuning

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.