Manley Performance Platinum Series Pistons

Chrysler HEMI 6.4L 4.095in Bore +0.005in Oversize Pistons with -5.0cc Dish

599805C-8

Overview:

The Manley Performance Platinum Series Pistons are precision-engineered forged pistons designed specifically for the Chrysler HEMI 6.4L engine with a 4.095-inch bore and a +0.005-inch oversize dimension. Featuring a -5.0cc dish design, these pistons offer optimized combustion chamber volume for enhanced tuning flexibility and performance gains.

Ideal for professional engine builders, tuners, and serious enthusiasts, these pistons provide a reliable foundation for high-performance builds. Whether you are upgrading your naturally aspirated or forced induction HEMI, these pistons deliver durability and strength to handle increased power levels while maintaining excellent engine efficiency.

With Manley’s reputation for quality and innovation, you’ll get components that stand up to demanding conditions, helping your engine perform at its best on the street or track.

Key Features:

These pistons incorporate advanced materials and design features to ensure superior performance and longevity:

• Constructed from 2618 aluminum alloy forgings, known for exceptional strength and fatigue resistance under high stress.
• Proven cam and barrel skirt profiles reduce friction and wear, improving piston stability and efficiency.
• Equipped with tool steel wrist pins for enhanced durability and precise fitment.
• Moly skirt coatings on select part numbers reduce friction and improve break-in characteristics.
• +0.005-inch oversize bore dimension (4.095 inches) for precise fitment in bored Chrysler HEMI 6.4L blocks.
• 5.0cc dish piston design optimizes combustion chamber volume for tuning versatility and improved detonation resistance.
• Designed to meet the demands of high-performance and racing applications without sacrificing reliability.
• Compatible with a wide range of aftermarket components and engine builds.

Construction & Design:

Manley’s Platinum Series Pistons are crafted using premium 2618 alloy forgings, a material choice favored in motorsports for its excellent strength-to-weight ratio and thermal properties. The forging process ensures a dense, uniform grain structure that withstands extreme combustion pressures and temperatures.

The pistons feature carefully engineered cam and barrel skirt profiles that minimize piston slap and reduce friction against the cylinder walls, contributing to smoother operation and longer engine life. The inclusion of tool steel wrist pins provides a robust connection between the piston and connecting rod, capable of handling high RPM and load conditions.

Selective molybdenum skirt coatings further enhance durability by reducing wear during initial break-in and ongoing operation. The -5.0cc dish design allows engine builders to fine-tune compression ratios and combustion characteristics to suit specific performance goals.

Installation & Fitment:

These pistons are designed as direct replacements for Chrysler HEMI 6.4L engines bored to 4.095 inches with a +0.005-inch oversize specification. They fit precisely within the cylinder bore and are compatible with standard HEMI engine components.

Installation requires standard engine assembly procedures. No special modifications beyond the specified bore size are necessary. Proper ring installation and torque specifications should be followed to ensure optimal performance and longevity.

What’s Included

• Complete set of forged 2618 alloy pistons with -5.0cc dish design
• Tool steel wrist pins
• Pre-applied moly skirt coatings on select pistons
• Detailed product specifications and part identification

Ideal For:

• Professional engine builders and performance tuners upgrading Chrysler HEMI 6.4L engines
• High-performance street vehicles requiring durable, forged pistons
• Track and racing applications demanding reliable, high-strength components
• Engine builds with bored cylinders to 4.095 inches and +0.005-inch oversize pistons
• Builders seeking precise combustion chamber volume control with -5.0cc dish pistons

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.