Wiseco Professional Series Forged Piston Set

2011–2024 Chrysler 300, Dodge Challenger, Dodge Charger, Dodge Durango, Jeep Grand Cherokee SRT8, Jeep Wrangler, Ram 2500, Ram 3500, Jeep Grand Wagoneer 6.4L 392 HEMI

Part #: K0396XS

Overview

The Wiseco Professional Series Forged Piston Set is engineered specifically for the Chrysler 6.4L Gen III HEMI engine, covering model years 2011 through 2024. Designed for serious racers and high-performance builders, this set of eight pistons delivers exceptional strength and durability for heavy-duty and severe race applications. Whether you are assembling a dedicated race engine or upgrading a high-output street machine, these pistons provide a reliable foundation to push your build beyond factory limits.

Each piston is precision forged and matched with premium piston rings to ensure optimal sealing and performance under extreme conditions. This piston set is ideal for those who demand uncompromising quality and performance from their Chrysler 392 HEMI engine.

Key Features

Wiseco’s Professional Series pistons incorporate advanced design and manufacturing techniques to meet the rigorous demands of motorsports and high-performance engine builds:

• Forged from high-strength aluminum alloy for superior durability and resistance to thermal and mechanical stress
• Designed with a 4.090-inch bore diameter to precisely match Chrysler 6.4L Gen III HEMI specifications
• Compression height of 1.210 inches for accurate piston-to-cylinder head clearance and optimized combustion chamber volume
• Equipped with a 0.945-inch wrist pin diameter for enhanced pin strength and reduced piston weight
• Negative 11.5cc valve reliefs provide adequate clearance for high-lift camshafts and aggressive valve timing
• Set of 8 pistons, perfect for complete V8 engine builds
• Includes premium piston rings engineered for excellent sealing and reduced friction
• Professional Series pistons are tailored for heavy-duty race use, supporting high horsepower and torque outputs

Construction & Design

Wiseco’s Professional Series pistons are crafted using state-of-the-art forging processes that produce a dense, uniform grain structure for maximum strength and durability. Precision CNC machining ensures tight tolerances and consistent fitment, critical for high-performance applications. The pistons feature optimized skirt profiles and valve reliefs to reduce weight while maintaining structural rigidity.

The forged aluminum alloy construction offers excellent thermal conductivity, which helps manage combustion heat and reduces the risk of detonation. These pistons are engineered to withstand the intense pressures and temperatures encountered in racing and severe duty environments, making them a reliable choice for high-horsepower Chrysler 6.4L HEMI builds.

Installation & Fitment

This piston set is designed for direct fitment on Chrysler 6.4L Gen III HEMI engines with a 4.090-inch bore, covering a wide range of vehicles from 2011 through 2024. Compatible with factory and aftermarket connecting rods sized for a 0.945-inch wrist pin, these pistons require no modifications to the engine block or other components when installed correctly. Professional installation by experienced engine builders or racers is recommended to ensure optimal performance and reliability.

What's Included

• Set of 8 forged aluminum pistons with negative 11.5cc valve reliefs
• Premium piston rings matched to the piston design for superior sealing and reduced friction

Ideal For

• Serious racers building heavy-duty or severe duty race engines
• Performance enthusiasts upgrading their Chrysler 6.4L Gen III HEMI for increased power and durability
• Engine builders requiring precision components for high-horsepower V8 applications