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 #: K0397X05

Overview

The Wiseco Professional Series Forged Piston Set is engineered specifically for the Chrysler Gen III 6.4L 392 HEMI engine, delivering exceptional strength and durability for high-performance applications. Designed with serious racers and engine builders in mind, these pistons excel in heavy-duty and severe duty race environments, providing reliable power and longevity under extreme conditions. Whether you are building a track-focused race engine or a high-output street performance machine, this piston set offers precision fitment and robust construction to help you push your build to the limit.

Each set includes eight pistons crafted to exacting tolerances, ensuring optimal performance and consistent power delivery. With a 4.095-inch bore diameter and a 1.210-inch compression height, these pistons are tailored to meet the demanding specifications of the 6.4L HEMI platform.

Key Features

Wiseco’s Professional Series pistons incorporate advanced materials and design features to maximize performance and durability in racing and high-stress applications:

• Forged from premium-grade aluminum alloy for superior strength and heat resistance
• Precisely machined 4.095-inch bore diameter to match Chrysler 6.4L Gen III HEMI specifications
• Optimized 1.210-inch compression height for precise piston-to-cylinder head clearance
• Robust 0.945-inch wrist pin diameter for enhanced pin retention and reduced wear
• Includes high-quality piston rings engineered for excellent sealing and reduced blow-by
• Custom-level performance features designed for heavy-duty and severe duty race builds
• Set of 8 pistons ideal for complete V8 engine rebuilds or upgrades
• Engineered to withstand high RPM and extreme combustion pressures typical of racing environments

Construction & Design

These pistons are precision forged using Wiseco’s advanced manufacturing processes, which ensure a uniform grain structure and enhanced mechanical properties. The forged aluminum alloy construction strikes an excellent balance between lightweight design and strength, reducing reciprocating mass for improved throttle response and engine efficiency.

The pistons feature tight tolerances to maintain consistent ring sealing and minimize friction, contributing to better power output and engine longevity. The crown and skirt geometry are optimized to support combustion stability and reduce piston slap, enhancing overall engine smoothness. Additionally, the 0.945-inch wrist pin diameter provides increased durability and compatibility with high-performance connecting rods.

Installation & Fitment

This piston set is a direct replacement for Chrysler Gen III 6.4L 392 HEMI engines from 2011 through 2024, including applications in Chrysler 300, Dodge Challenger, Dodge Charger, Dodge Durango, Jeep Grand Cherokee SRT8, Jeep Wrangler, Ram 2500, Ram 3500, and Jeep Grand Wagoneer models. The pistons fit factory cylinder bores sized to 4.095 inches and are compatible with standard 6.200-inch connecting rods and 0.945-inch wrist pins.

Installation requires standard engine assembly procedures with no special machining beyond standard bore sizing. No cutting, drilling, or special tuning is necessary for proper fitment, making these pistons an efficient upgrade or rebuild solution for high-performance 6.4L HEMI engines.

What's Included

• Set of 8 forged aluminum pistons
• Premium piston rings matched to each piston
• Wrist pins and circlips required for assembly

Ideal For

• Serious racers building heavy-duty or severe duty Chrysler 6.4L HEMI engines
• Engine builders seeking reliable, high-strength pistons for track or drag racing applications
• Performance enthusiasts upgrading their Gen III HEMI for increased power and durability
• Builders requiring pistons capable of withstanding high RPM and extreme combustion pressures

Wiseco is a forged piston and engine-components brand trusted in both automotive and powersports performance, offering precision-made pistons and kits for high-RPM, high-boost, and high-load builds. Whether you’re rebuilding for durability or chasing serious horsepower, Wiseco parts are chosen for strength, consistency, and proven performance in demanding conditions.