DSS Racing FX Series Forged Piston Set

Fits Most Chrysler / Dodge / Jeep / Ram 5.7L Hemi Models

1-6700-3927 / 2-6700-3927 / 3-6700-3927 / K1-6700-3927 / K2-6700-3927 / K3-6700-3927

Overview:

The DSS Racing 5.7 Stroker Small Block Mopar Hemi Gen III FX Series Forged Piston Set is engineered for enthusiasts and professional builders seeking enhanced durability and performance in their 5.7L Hemi engines. Designed to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi models, this piston set supports stroker builds with a 4.050" stroke and is ideal for increasing engine displacement and power output.

These forged pistons offer superior strength and reliability compared to stock cast pistons, making them perfect for high-performance street, track, or off-road applications. The set’s precise specifications ensure optimal compression ratios and compatibility with a variety of engine configurations.

Key Features:

Built with advanced engineering and attention to detail, the DSS Racing FX Series Forged Pistons deliver a combination of strength, efficiency, and fitment precision:

• Compatible with 392 Small Block Mopar Hemi Gen III engines
• Comp Height: 1.09" for optimal piston-to-deck clearance
• 1.5cc flat top design for improved combustion efficiency
• Pin diameter: .927" with options for full-floating or press-fit installation
• Ring groove dimensions: 1.2mm top and second rings, 3mm oil ring
• Stroke length: 4.050" to accommodate stroker crankshafts
• Connecting rod length: 6.125" for balanced engine geometry
• Available compression ratios approximately 11.72:1 (65cc), 10.57:1 (74cc), and 9.46:1 (85cc) depending on combustion chamber volume
• Forged construction for enhanced durability under high stress

Construction & Design:

DSS Racing’s FX Series pistons are crafted from high-quality forged aluminum alloy, providing exceptional strength and heat resistance essential for high-performance and forced induction engines. The forging process refines the grain structure of the metal, resulting in pistons that withstand extreme combustion pressures and temperatures without cracking or deforming.

The pistons feature a flat top design with a slight -1.5cc dish to optimize combustion chamber shape and improve flame propagation. Precision-machined pin bores accommodate either full-floating or press-fit wrist pins, offering flexibility for different engine builds. The ring grooves are engineered to maintain proper ring seal and reduce friction, enhancing overall engine efficiency and longevity.

Installation & Fitment:

This piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines equipped with Gen III small block Mopar Hemi architecture. Installation typically requires professional engine assembly skills and may involve matching the pistons to compatible rods and crankshafts, especially when building stroker configurations with a 4.050" stroke.

Proper ring end gap and piston-to-cylinder wall clearance must be verified during installation to ensure optimal performance and durability. These pistons are suitable for both full rebuilds and performance upgrades, but it is recommended to consult with a professional engine builder to confirm compatibility with your specific engine setup.

What's Included:

• Set of forged pistons (quantity as per engine requirements)
• Wrist pin options: full-floating or press-fit (depending on SKU)
• Detailed specifications for compression ratio and dimensions

Ideal For:

This DSS Racing forged piston set is ideal for automotive enthusiasts, professional engine builders, and racers looking to upgrade or rebuild their 5.7L Hemi engines with a reliable, high-strength piston solution. It is especially suited for stroker engine builds, high-compression applications, and those seeking improved durability and performance in demanding driving 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.