Wiseco Professional Series Forged Piston Set

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 #: K0397XS

Overview

The Wiseco Professional Series Forged Piston Set is engineered specifically for the Chrysler 6.4L Gen III HEMI engine, delivering exceptional strength and durability for high-performance and racing applications. Crafted for serious engine builders and racers, this set of eight pistons is designed to withstand the extreme conditions of heavy-duty use while enhancing engine reliability and power output.

Whether upgrading a street performance build or assembling a race-ready motor, these pistons offer precision fitment and advanced materials that push the limits of factory specifications. Included premium piston rings ensure optimal sealing and reduced friction, providing a complete solution for enhanced combustion efficiency and durability.

Key Features

Wiseco’s Professional Series pistons combine advanced engineering and manufacturing techniques to meet the demands of high-stress, high-heat environments. Key features include:

• Forged aluminum construction for maximum strength and resistance to fatigue and thermal stress
• 4.090 inch bore size, perfectly matched to the Chrysler 6.4L Gen III HEMI specifications
• 1.210 inch compression height optimized for ideal engine geometry and performance
• 9.50cc dome volume designed to support custom compression ratios and efficient combustion
• 0.927 inch wrist pin diameter for enhanced pin strength and durability under high loads
• Professional Series design tailored for severe duty racing and high-output street engines
• Premium piston rings included for superior sealing and reduced friction
• Precision machining ensures consistent fitment and balance across all eight pistons
• Compatible with factory and aftermarket rods and components designed for the 6.4L Gen III HEMI

Construction & Design

Each piston is forged from a high-quality aluminum alloy, providing an ideal balance of lightweight strength and excellent thermal conductivity. The forging process refines the grain structure, significantly improving fatigue resistance compared to traditional cast pistons. The dome shape and volume are engineered to optimize combustion efficiency and power delivery specific to the Gen III HEMI platform.

Wiseco’s meticulous machining and finishing processes ensure tight tolerances and smooth surface finishes, which reduce internal friction and enhance ring sealing. This attention to detail guarantees reliable performance and longevity, even under the most demanding racing or high-performance conditions.

Installation & Fitment

This piston set is designed exclusively for the Chrysler 6.4L Gen III HEMI engine, ensuring precise fitment and compatibility with factory specifications. Installation follows standard engine assembly procedures and is recommended for professional or experienced builders familiar with high-performance engine builds.

The set includes eight matched pistons for balanced engine assembly and is compatible with both factory and aftermarket connecting rods designed for the 6.4L Gen III HEMI. Typically, no modifications to the engine block or rods are required when installing these pistons.

What's Included

• Set of 8 Wiseco Professional Series forged pistons
• Premium piston rings matched to piston specifications

Ideal For

• Race engine builders requiring durable, high-strength pistons for severe duty applications
• Performance enthusiasts upgrading their Chrysler 6.4L Gen III HEMI for increased power and reliability
• Engine builders focused on custom compression ratios and precise engine geometry
• Those seeking a premium piston set designed to withstand high RPM and boost levels