DSS Racing FX Series Forged Piston Set

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

1-6703-3957 / 2-6703-3957 / 3-6703-3957 / K1-6703-3957 / K2-6703-3957 / K3-6703-3957

Overview:

The DSS Racing 5.7 Stroker Small Block Mopar Hemi Gen III FX Series Forged Piston Set is engineered for enthusiasts and builders seeking reliable, high-performance components for their 5.7L Hemi engines. Designed to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi models, this piston set offers enhanced durability and precision for stroker builds and performance upgrades. Whether you are rebuilding your engine or upgrading for increased power and efficiency, these forged pistons provide a solid foundation for improved combustion and engine longevity.

These pistons are specifically crafted for the Gen III 5.7L Hemi platform, featuring a compact design and optimized dish volume to support various compression ratios. They are ideal for stroker applications with a 4.050" stroke and 6.125" rod length, ensuring compatibility with popular build configurations.

Key Features:

Built with performance and reliability in mind, the DSS Racing FX Series Forged Pistons include the following key features:

• Forged construction for superior strength and durability under high-stress conditions
• Comp height of 1.09" for precise deck clearance and optimal piston-to-head clearance
• 12cc dish top design to accommodate various compression ratios and combustion chamber volumes
• .927" wrist pin diameter with options for full-floating or press-fit installation
• Ring groove dimensions of 1.2mm/1.2mm/3mm for reliable ring sealing and reduced friction
• Compatible with a 4.050" stroke crankshaft and 6.125" connecting rods for stroker builds
• Available in multiple dish volumes to achieve approximate compression ratios of 10.59:1 (65cc), 9.67:1 (74cc), and 8.76:1 (85cc)
• Precision-machined to ensure consistent fitment and performance across all pistons

Construction & Design:

The DSS Racing FX Series pistons are manufactured from high-quality forged aluminum alloy, providing an excellent balance of strength, weight, and heat dissipation. The forging process enhances the grain structure of the metal, resulting in pistons that can withstand the rigors of high-performance and forced induction applications. The dish top design helps control compression ratios while maintaining efficient combustion chamber dynamics.

Each piston features a robust wrist pin bore designed to accept either full-floating or press-fit pins, allowing builders to tailor the assembly to their specific needs. The ring grooves are precisely cut to accommodate performance ring sets, ensuring optimal sealing and reduced blow-by. Overall, the design focuses on durability, weight savings, and compatibility with popular stroker configurations.

Installation & Fitment:

This piston set is engineered to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines, specifically the Gen III small block Mopar Hemi platform. Installation requires standard engine rebuild procedures, with attention to proper ring end gap and piston-to-cylinder wall clearance. The pistons are compatible with a 4.050" stroke crankshaft and 6.125" connecting rods, making them suitable for stroker engine builds.

Builders should verify compression ratio targets based on the selected piston dish volume and combustion chamber size. The wrist pins can be installed as either full-floating or press-fit, depending on engine build preferences and performance requirements.

What's Included:

• Set of forged pistons (quantity as required for engine configuration)
• Wrist pins compatible with full-floating or press-fit installation
• Detailed specifications for piston dimensions and ring groove sizes

Ideal For:

This piston set is ideal for engine builders, performance enthusiasts, and professional shops upgrading or rebuilding 5.7L Hemi engines for street, strip, or mild racing applications. It suits stroker builds requiring a 4.050" stroke and 6.125" rod length, delivering enhanced strength and reliability over stock cast pistons. Whether upgrading for forced induction, nitrous, or naturally aspirated power increases, these forged pistons provide a durable foundation for sustained performance.

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.