JE Pistons Gen 3 Hemi Floating Piston Set

Mopar 6.4L Gen III Hemi 8-Cylinder

367221

Overview:

The JE Pistons Gen 3 Hemi 6.4L Floating Piston Set is engineered specifically for the Mopar 6.4L Gen III Hemi engine, delivering superior performance and durability for high-demand racing and street applications. With over 75 years of expertise in forged piston technology, JE Pistons offers a precision-crafted solution designed to withstand the rigors of aggressive driving and competition. This piston set is ideal for enthusiasts and professional racers seeking reliable, high-quality components that enhance engine efficiency and power output.

Manufactured entirely in the USA, these pistons are forged and machined to exacting standards, ensuring a perfect fit and optimal performance in your Gen 3 Hemi engine. Whether you're building a dirt track racer or a drag strip contender, JE Pistons provides proven performance that has earned multiple victories across various motorsport disciplines.

Key Features:

Designed with advanced engineering and premium materials, the JE Pistons Gen 3 Hemi Floating Piston Set offers the following key features:

• Precision forged from high-strength aluminum alloy for maximum durability and lightweight performance
• Custom dome design optimized for the 6.4L Gen III Hemi combustion chamber
• 4.100 inch bore size with a 1.210 compression height for exact engine fitment
• Floating piston pin design to reduce friction and improve piston stability at high RPM
• Fully machined and balanced for superior engine smoothness and longevity
• Compatible with 8-cylinder Mopar Gen 3 Hemi engines
• Engineered to withstand extreme heat and pressure conditions typical of racing environments
• Proven track record in dirt track, drag racing, and other high-performance motorsports

Construction & Design:

Each piston in this set is forged from premium-grade aluminum alloy, providing an excellent strength-to-weight ratio essential for high-performance engines. The forging process enhances the metal’s grain structure, resulting in pistons that resist cracking, scuffing, and thermal fatigue. JE Pistons then machine each component with precision CNC equipment to ensure tight tolerances and perfect geometry tailored to the Gen 3 Hemi’s specifications.

The floating piston pin design allows for reduced side loading and friction, which contributes to improved piston ring seal and longer engine life. The dome shape is carefully engineered to optimize combustion efficiency and compression ratio, enhancing power delivery without compromising reliability.

Installation & Fitment:

This piston set is designed as a direct fit for the Mopar 6.4L Gen III Hemi engine, requiring no modifications for proper installation. Professional installation is recommended to ensure correct ring end gap, piston orientation, and torque specifications. These pistons are compatible with stock and aftermarket components designed for the Gen 3 Hemi platform, making them an excellent upgrade for engine rebuilds or performance builds.

What's Included:

• Set of 8 forged floating pistons
• Piston pins
• Retaining clips

Ideal For:

This piston set is ideal for Mopar enthusiasts, professional racers, and engine builders who demand high-quality, durable components for the 6.4L Gen III Hemi engine. Whether you are building a race engine for dirt track competition, drag racing, or a high-performance street machine, JE Pistons delivers the reliability and performance needed to maximize your engine’s potential.

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.