Wiseco Professional Series Forged Pistons

2011–2024 Chrysler 300, Dodge Challenger, Dodge Charger, Dodge Durango, Jeep Grand Cherokee, Jeep Wrangler, Ram 2500, Ram 3500, Jeep Grand Wagoneer 6.4L 392 HEMI

Part #: K0399XS

Overview

The Wiseco Professional Series Forged Piston Set is engineered specifically for the Chrysler Gen III 6.4L 392 HEMI V8 engine, delivering exceptional strength and durability for high-performance and racing applications. Crafted for serious engine builders and racers, these pistons are designed to endure the extreme stresses of heavy-duty and severe duty use, making them ideal for both boosted and naturally aspirated builds.

Each piston is precision forged and includes premium piston rings to ensure optimal sealing and performance under high cylinder pressures and elevated temperatures. Whether you are upgrading your street performance engine or assembling a race-ready powerplant, Wiseco’s Professional Series pistons provide the reliability and strength necessary to maximize your engine’s potential.

Key Features

Wiseco’s Professional Series pistons incorporate advanced design and manufacturing technologies to meet the demands of high-horsepower Chrysler 6.4L HEMI builds:

• Forged aluminum construction for superior strength, heat resistance, and durability under extreme conditions
• Precisely engineered for the Chrysler Gen III 6.4L 392 HEMI to ensure perfect fitment and optimal performance
• 4.090" bore size with a 2.00cc dome volume and .866" wrist pin diameter for enhanced durability and reduced wear
• Designed to handle increased cylinder pressures and high RPM operation common in race and performance engines
• Includes premium piston rings installed on each piston for excellent sealing and reduced blow-by
• Compression height and pin bore tailored to match factory and aftermarket rods for seamless integration
• Ideal for heavy-duty racing, severe duty applications, and high-boost forced induction setups
• Optimized piston geometry to improve combustion efficiency and reduce friction

Construction & Design

Manufactured from high-quality forged aluminum alloy, these pistons benefit from a refined grain structure that enhances resistance to cracking, scuffing, and thermal fatigue compared to cast pistons. The forging process ensures a robust yet lightweight component capable of withstanding the rigors of racing and high-performance driving.

The pistons feature precise dimensional tolerances and a design optimized for combustion efficiency, contributing to improved power output and engine longevity. The 0.866" wrist pin diameter and 2.00cc dome volume are engineered to meet the specific demands of the 6.4L Gen III HEMI platform, ensuring compatibility with common connecting rods and cylinder bore sizes.

Installation & Fitment

This piston set is a direct fit for Chrysler Gen III 6.4L 392 HEMI engines from 2011 through 2024, including applications in the Chrysler 300, Dodge Challenger, Dodge Charger, Dodge Durango, Jeep Grand Cherokee, Jeep Wrangler, Ram 2500, Ram 3500, and Jeep Grand Wagoneer. Designed to work with a 4.090" bore and 6.125" connecting rods, these pistons typically require no special machining beyond standard bore sizing.

They are compatible with both factory and aftermarket components, making them an excellent choice for engine rebuilds or performance upgrades. The set includes eight pistons, providing a complete solution for V8 engine builds.

What's Included

• Set of 8 Wiseco Professional Series forged pistons
• Premium piston rings pre-installed on each piston

Ideal For

• Racers building heavy-duty or severe duty Chrysler 6.4L Gen III HEMI engines
• Performance enthusiasts seeking durable, high-quality pistons for high-horsepower street or race builds
• Engine builders requiring reliable forged pistons for boosted or naturally aspirated applications
• Anyone upgrading from stock pistons to forged components for improved strength, longevity, and reliability