DSS Racing FX Series Forged Piston Set

Fits Chrysler, Dodge, Jeep, Ram 5.7L Hemi Models

1-6718-3957 / 2-6718-3957 / 3-6718-3957 / K1-6718-3957 / K2-6718-3957 / K3-6718-3957

Overview:

The DSS Racing FX Series +9cc Dome Top Forged Piston Set is engineered specifically for most Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 5.7L Hemi V8 engine. Designed to replace factory pistons, this set offers enhanced strength and durability for enthusiasts seeking reliable performance upgrades. Ideal for street performance, mild racing, or engine rebuilds, these pistons provide improved combustion efficiency and increased compression options to suit various build goals.

Whether you are rebuilding your 5.7L Hemi or upgrading for higher power output, these forged pistons deliver the quality and precision needed to withstand demanding conditions while maintaining OEM fitment and reliability.

Key Features:

Built with advanced engineering and precision manufacturing, the DSS Racing FX Series pistons offer the following key features:

• +9cc dome top design to increase compression ratio and optimize combustion
• Forged construction for superior strength and resistance to detonation
• Comp height of 1.21" for compatibility with stock and aftermarket components
• Pin diameter of .927" with options for full-floating or press-fit wrist pins
• Ring groove dimensions of 1.2mm/1.2mm/3mm to accommodate high-performance piston rings
• Compatible with 3.578" stroke and 6.243" connecting rods typical of the 5.7L Hemi
• Available in multiple combustion chamber volume options (65cc, 74cc, 85cc) for compression ratios ranging approximately from 9.58:1 to 12.25:1
• Designed for 352 Small Block Mopar Hemi Gen III engines

Construction & Design:

These pistons are crafted from high-grade forged aluminum alloy, providing an excellent balance of lightweight strength and thermal conductivity. The dome top design enhances combustion chamber shape, promoting efficient flame travel and improved power output. Precision CNC machining ensures tight tolerances for optimal ring sealing and piston-to-wall clearance, reducing friction and wear.

The option for full-floating or press-fit wrist pins allows builders to tailor the assembly to their specific application and durability requirements. The piston skirts are engineered to minimize noise and scuffing, contributing to smoother engine operation and longevity.

Installation & Fitment:

The DSS Racing FX Series pistons are designed as direct replacements for factory pistons in most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines. Installation requires standard engine rebuild procedures, including proper ring end gap setting and piston orientation. No major modifications to the block or connecting rods are typically necessary, making these pistons a straightforward upgrade for performance builds or rebuilds.

Builders should verify compression ratio targets based on their chosen combustion chamber volume and engine specifications to ensure compatibility with fuel and tuning strategies.

What's Included:

• Set of 8 forged +9cc dome top pistons
• Wrist pins (full-floating or press-fit options depending on SKU)
• Piston rings compatible with 1.2/1.2/3mm groove dimensions
• Installation instructions and technical specifications

Ideal For:

This piston set is ideal for automotive enthusiasts, engine builders, and performance tuners working on Chrysler, Dodge, Jeep, or Ram 5.7L Hemi engines who require durable, high-quality forged pistons. Whether upgrading for increased compression, rebuilding a worn engine, or preparing for mild to moderate power enhancements, these pistons provide a reliable foundation for improved engine performance and longevity.

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.