JE Pistons Forged Piston Set

Gen 3 Hemi 6.4L Mopar 8-Cylinder

367218

Overview:

The JE Pistons Gen 3 Hemi 6.4L Piston Set is engineered to deliver exceptional durability and performance for Mopar enthusiasts and professional racers alike. With over 75 years of expertise in forged piston technology, JE Pistons offers a precision-crafted solution designed specifically for the Gen III Hemi 6.4L engine platform. Whether you are building a high-performance street machine or a competitive race engine, these pistons provide the strength and reliability needed to withstand extreme conditions.

Manufactured entirely in the USA, these pistons feature a 4.100-inch bore size and a 1.210 compression distance, optimized for the inverted dome/dish design to enhance combustion efficiency. This piston set is ideal for those seeking to upgrade their engine’s internal components with proven race-winning technology.

Key Features:

Designed with precision and performance in mind, the JE Pistons Gen 3 Hemi 6.4L set includes:

• Premium forged aluminum construction for superior strength and lightweight performance
• Custom-engineered inverted dome/dish piston crown for optimized combustion and power output
• Exact bore size of 4.100 inches to match Gen III Hemi 6.4L specifications
• 1.210-inch compression distance for ideal piston-to-cylinder head clearance
• Fully machined and finished to tight tolerances for consistent fit and function
• Designed specifically for Mopar 8-cylinder Gen 3 Hemi engines
• Proven durability in various racing disciplines including dirt track and drag racing
• Manufactured 100% in the USA to ensure quality control and material integrity

Construction & Design:

JE Pistons utilizes high-grade forged aluminum alloys to produce pistons that combine lightweight characteristics with exceptional strength. The forging process enhances the metal’s grain structure, resulting in pistons that resist cracking and deformation under high stress and temperature conditions. Each piston is CNC-machined to exact specifications, ensuring optimal balance and fitment within the cylinder bore.

The inverted dome/dish design of the piston crown is engineered to improve combustion chamber dynamics, promoting efficient fuel burn and reducing the risk of detonation. This design also supports higher compression ratios and improved power output without sacrificing reliability.

Installation & Fitment:

The JE Pistons Gen 3 Hemi 6.4L Piston Set is a direct fit for Mopar Gen III Hemi 6.4L engines with a 4.100-inch bore. Installation requires standard engine assembly procedures and should be performed by a qualified technician to ensure proper ring end gap, piston orientation, and clearance checks. No major modifications are typically necessary when replacing factory pistons with this set, making it a straightforward upgrade for performance builds.

What's Included:

• Set of 8 forged pistons for Gen 3 Hemi 6.4L engines
• Precision-machined piston skirts and crowns
• Documentation detailing specifications and installation guidelines

Ideal For:

This piston set is ideal for Mopar enthusiasts, engine builders, and racers who demand high-strength, reliable components for their Gen III Hemi 6.4L engines. Whether competing on the drag strip, dirt track, or building a high-performance street engine, these pistons provide the durability and performance enhancements necessary to maximize engine 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.