Wiseco Professional Series Pistons

2005–2010 Chrysler 300C, 2006–2010 Dodge Charger, 2006–2008 Dodge Magnum, 2006–2010 Jeep Grand Cherokee, 2008–2010 Dodge Challenger 6.1L SRT8

Part #: 6471RX25

Overview

The Wiseco Professional Series forged piston with a +4cc dome and 4.080-inch bore diameter is engineered specifically for high-performance 6.1L SRT8 engines found in select Chrysler, Dodge, and Jeep models from 2005 to 2010. Designed for serious racers and engine builders, these pistons deliver exceptional strength and durability under extreme conditions. Whether you are building a heavy-duty race engine or a high-output street machine, Wiseco’s Professional Series pistons provide the reliability and performance needed to push your build beyond conventional limits.

Each piston is crafted to meet the demands of severe duty applications, making them ideal for forced induction, nitrous, or naturally aspirated race engines. The +4cc dome volume enhances compression and combustion efficiency, contributing to improved power output and throttle response.

Key Features

Wiseco’s Professional Series pistons incorporate advanced design and manufacturing technologies to ensure peak performance and durability. Key features include:

• Forged 2618 aluminum alloy construction for superior strength and thermal resistance
• +4cc dome design to increase compression ratio and optimize combustion
• Precision CNC machining for exact bore and dome dimensions
• Premium ring pack included for enhanced sealing and reduced blow-by
• Designed for heavy to severe duty race applications
• Optimized skirt coating to reduce friction and wear
• Heat-treated and stress-relieved for maximum durability
• Compatible with stock and aftermarket connecting rods
• Balanced for high RPM stability and reduced vibration

Construction & Design

Wiseco Professional Series pistons are manufactured from high-grade 2618 forged aluminum alloy, known for its excellent fatigue strength and thermal conductivity. This material choice allows the pistons to withstand the intense heat and pressure generated in high-performance combustion chambers. The forging process ensures a dense, uniform grain structure, which enhances durability and resistance to cracking under severe conditions.

The +4cc dome shape is carefully engineered to increase the compression ratio without compromising piston-to-valve clearance, making it suitable for performance builds that demand more power. Each piston undergoes CNC machining to achieve precise tolerances, ensuring a perfect fit and optimal ring sealing. Additionally, the skirt surface is treated with a proprietary coating to minimize friction and wear, extending the life of the piston and cylinder bore.

Installation & Fitment

These Wiseco Professional Series pistons are designed as direct replacements for the 6.1L SRT8 engines in the specified Chrysler, Dodge, and Jeep models. Installation requires standard engine rebuild procedures, including proper honing of the cylinder bores and careful ring end-gap adjustment. Due to the +4cc dome volume, it is recommended to verify piston-to-valve clearance and compression ratio compatibility with your specific build.

Professional installation by an experienced engine builder is advised to ensure optimal performance and longevity. These pistons are compatible with stock and aftermarket components commonly used in performance 6.1L SRT8 engine builds.

What's Included

• One Wiseco Professional Series forged piston with +4cc dome, 4.080-inch bore
• Premium piston ring set matched to the piston
• Installation instructions and technical specifications

Ideal For

This Wiseco Professional Series piston is ideal for serious racers, engine builders, and performance enthusiasts who require a durable, high-strength piston for heavy-duty or severe duty applications. It is perfectly suited for naturally aspirated or forced induction 6.1L SRT8 engines in Chrysler 300C, Dodge Charger, Dodge Magnum, Jeep Grand Cherokee, and Dodge Challenger models from 2005 to 2010. Whether building a track-only race engine or a high-performance street machine, these pistons provide the reliability and performance to meet demanding 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.