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 #: K0399X1

Overview

The Wiseco Professional Series Forged Piston Set is engineered specifically for the Chrysler 6.4L Gen III HEMI engine, delivering uncompromising strength and durability for high-performance applications. Crafted for serious racers and engine builders, this set of eight forged pistons is designed to withstand the extreme demands of drag racing, road racing, and heavy-duty street performance. Whether building a high-horsepower race engine or a robust performance street setup, these pistons provide a reliable foundation for increased power and long-lasting engine life.

Each piston set includes premium piston rings matched for optimal sealing and wear resistance, ensuring superior performance under aggressive tuning and high RPM conditions. Wiseco’s Professional Series pistons are the ideal choice for those seeking durability, precision, and enhanced engine reliability in the Chrysler 6.4L 392 HEMI platform.

Key Features

Designed with advanced engineering and manufacturing techniques, these pistons offer the following key benefits:

• Forged from high-strength aluminum alloy for exceptional durability and resistance to thermal and mechanical stress.
• Precision-machined 4.100-inch bore size to match Chrysler 6.4L Gen III HEMI specifications for perfect fitment.
• Compression height of 1.125 inches optimized for proper deck clearance and piston-to-valve clearance.
• 0.927-inch wrist pin diameter engineered for maximum strength and reduced reciprocating mass.
• Includes premium piston rings designed for optimal sealing and long-lasting wear resistance.
• Reinforced ring lands and skirt coatings reduce friction and wear during high RPM operation.
• Compatible with factory and aftermarket connecting rods sized at 6.125 inches.
• Custom-level performance features tailored for heavy-duty race builds and high-output engines.
• Built to withstand the extreme conditions of drag racing, road racing, and other motorsport disciplines.

Construction & Design

Wiseco’s Professional Series pistons are manufactured using state-of-the-art forging processes that enhance grain structure and mechanical properties for superior strength-to-weight ratio. The forged aluminum alloy construction reduces piston mass while maintaining toughness, allowing for improved engine response and durability.

Each piston is CNC-machined to exacting tolerances, ensuring consistent fitment and reliable performance. The design incorporates reinforced ring lands and advanced skirt coatings to minimize friction and wear, even under the severe duty cycles typical of high-performance and racing engines. These pistons are engineered specifically for the Chrysler Gen III HEMI platform to provide dependable operation in demanding environments.

Installation & Fitment

This piston set is designed exclusively for the Chrysler 6.4L Gen III HEMI engine, ensuring precise compatibility with the factory bore and rod dimensions. Installation requires professional engine assembly practices, including proper ring end gap setting and clearance verification. Typically, no modifications to the engine block or connecting rods are necessary when using these pistons, provided the engine is prepared to the specified bore and rod measurements.

What's Included

• Set of 8 forged pistons
• Premium piston rings matched to the pistons

Ideal For

• Performance engine builders upgrading Chrysler 6.4L Gen III HEMI engines
• Racers requiring durable pistons for drag, road, or circle track applications
• High-output street and track vehicles demanding reliable forged components
• Engine builders focused on severe duty and heavy load conditions

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.