JE Pistons Forged Piston Set

Gen 3 Hemi 6.4L 4.09in Bore 0.927in Pin Diameter

367216

Overview:

The JE Pistons Gen 3 Hemi 6.4L forged piston set is engineered for high-performance Mopar applications, specifically designed to fit the Gen III Hemi 6.4L engine with a 4.090-inch bore and 0.927-inch pin diameter. With over 75 years of expertise in racing piston technology, JE Pistons delivers a premium product that balances durability and performance for serious enthusiasts and professional racers alike.

Manufactured entirely in the USA, these pistons are forged and machined to exacting standards to ensure optimal strength and reliability under extreme conditions. Whether you are building a street performance engine or a dedicated race motor, this piston set offers proven performance and longevity that has been tested on dirt tracks and drag strips around the world.

Key Features:

Designed to meet the demands of high-output Mopar Gen III Hemi engines, these pistons incorporate advanced features to maximize power and durability:

• Precision forged from premium billet aluminum for superior strength and lightweight performance
• Exact bore size of 4.090 inches to match Gen 3 Hemi 6.4L specifications
• 0.927-inch wrist pin diameter for enhanced pin stability and reduced wear
• Inverted dome/dish piston crown design optimized for combustion efficiency and compression control
• Compatible with 8-cylinder configurations, ideal for Mopar 6.4L Gen III Hemi engines
• Fully machined and balanced for consistent performance and reduced vibration
• Engineered to withstand high RPM and boost levels common in racing and performance builds
• 100% manufactured in the USA ensuring quality control and craftsmanship

Construction & Design:

JE Pistons utilizes a state-of-the-art forging process that produces pistons with exceptional grain structure and mechanical properties. The aluminum alloy used is carefully selected for its strength-to-weight ratio, allowing these pistons to endure the intense pressures and temperatures found in high-performance engines.

The inverted dome/dish crown design is tailored to optimize combustion chamber dynamics, improving power output while maintaining safe compression ratios. Each piston is CNC machined to tight tolerances, ensuring perfect fitment and consistent performance across all cylinders.

Installation & Fitment:

This piston set is designed as a direct fit for Mopar Gen III Hemi 6.4L engines with a 4.090-inch bore. Installation requires standard engine assembly procedures, including proper ring installation and clearance checks. No major modifications are typically necessary when replacing factory pistons with this JE Pistons set, making it suitable for both rebuilds and performance upgrades.

What's Included:

• Set of 8 forged pistons for 8-cylinder Gen 3 Hemi 6.4L engines
• Precision wrist pins sized at 0.927 inches diameter
• Complete machining and finishing for immediate installation

Ideal For:

This piston set is ideal for Mopar enthusiasts, professional racers, and engine builders seeking a reliable, high-performance upgrade for the Gen III Hemi 6.4L platform. Whether building a street/strip car, drag racer, or dirt track machine, these pistons provide the strength and precision needed to handle increased power and demanding conditions.

JE Pistons is a cornerstone name in forged pistons for high-performance and motorsports engines across domestic, sport compact, European, and powersports platforms. Their forged piston kits are engineered for strength and reliability in high-RPM, high-boost, and high-compression builds where factory internals won’t survive long.