DSS Racing FX Series Forged Pistons

Chrysler / Dodge / Jeep / Ram 6.1L SRT8 Gen III Mopar Hemi

1-6805-4055 / 2-6805-4055 / 3-6805-4055 / K1-6805-4055 / K2-6805-4055 / K3-6805-4055

Overview:

The DSS Racing FX Series Forged Pistons are precision-engineered performance components designed specifically for the 6.1L Gen III Mopar Hemi engines found in most Chrysler, Dodge, Jeep, and Ram SRT8 models. Built to withstand the rigors of high-performance and racing applications, these pistons offer enhanced strength, durability, and reliability over stock cast pistons. Whether you are upgrading your engine for street performance, track use, or serious motorsports, these forged pistons provide the foundation for increased power and efficiency.

Designed with a compact 1.09" compression height and a -18cc dish top, these pistons optimize combustion chamber volume to support a range of compression ratios, allowing for flexible tuning options. Their compatibility with full-floating or press-fit wrist pins ensures adaptability to various engine builds.

Key Features:

The DSS Racing FX Series Forged Pistons combine advanced design and manufacturing techniques to deliver superior performance and reliability. Key features include:

• Forged 418 Small Block Mopar Hemi Gen III construction for maximum strength and durability
• 1.09" compression height optimized for 6.1L SRT8 engines
• 18cc dish top design to support multiple combustion chamber volumes and compression ratios
• .927" wrist pin diameter compatible with full-floating or press-fit configurations
• Ring groove dimensions of 1.2mm top and second rings, and 3mm oil ring for effective sealing and oil control
• Stroke compatibility of 4.050" and connecting rod length of 6.125" for precise engine geometry
• Available in multiple dish volumes (65cc, 74cc, 85cc) to achieve approximate compression ratios of 10.36, 9.52, and 8.68 respectively
• Engineered to fit most Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 Gen III Mopar Hemi engines

Construction & Design:

Each piston in the DSS Racing FX Series is forged from high-grade 418 alloy, known for its excellent strength-to-weight ratio and resistance to thermal and mechanical stress. The forging process refines the grain structure of the metal, resulting in pistons that can endure the extreme pressures and temperatures encountered in high-performance engines.

The pistons feature a carefully engineered dish top design with a -18cc volume to optimize combustion efficiency and reduce the risk of detonation. Precision machining ensures tight tolerances for ring grooves and wrist pin bores, promoting reliable sealing and smooth piston movement. The option for full-floating or press-fit wrist pins adds versatility for different engine assembly preferences.

Installation & Fitment:

The DSS Racing FX Series Forged Pistons are designed as direct replacements for factory pistons in most Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 Gen III Mopar Hemi engines. Installation requires standard engine rebuild procedures, including proper ring fitting, wrist pin installation, and clearance checks. These pistons are compatible with the factory stroke of 4.050" and connecting rod length of 6.125", ensuring seamless integration into existing engine components.

Professional installation is recommended to ensure optimal performance and longevity. No major modifications are typically necessary, but verification of piston-to-valve clearance and deck height is advised during assembly.

What's Included:

• Set of six DSS Racing FX Series Forged Pistons
• Wrist pins (full-floating or press-fit depending on configuration)
• Installation instructions and technical specifications

Ideal For:

These forged pistons are ideal for automotive enthusiasts, professional builders, and racers seeking to upgrade their 6.1L Gen III Mopar Hemi engines for enhanced durability and performance. Whether building a street performance vehicle, drag racer, or track car, the DSS Racing FX Series pistons provide a reliable foundation for increased power output and engine longevity under demanding conditions.

DSS Racing — Founded in 1983 originally as Danny’s Speed Shop, DSS Racing has grown from a small Midwest performance engine shop into a respected name in forged engine components for the high-performance and racing markets. Based in St. Charles, Illinois, DSS is best known for its forged pistons and machined engine parts made in the USA that have been used in championship engines and thousands of builds, blending old-school racing roots with precision manufacturing for enthusiasts and racers alike.