DSS Racing FX Series Forged Piston Set

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

1-6713-3947 / 2-6713-3947 / 3-6713-3947 / K1-6713-3947 / K2-6713-3947 / K3-6713-3947

Overview:

The DSS Racing FX Series Forged Piston Set is engineered specifically for the 5.7L Small Block Mopar Gen III Hemi engines found in many Chrysler, Dodge, Jeep, and Ram vehicles. Designed to meet the demands of high-performance builds, these pistons offer exceptional strength and durability for enthusiasts and professional builders alike. Whether upgrading for increased power, reliability, or engine longevity, this piston set delivers precision and quality that stands up to rigorous driving conditions.

With a compact height and optimized dish volume, these pistons help maintain ideal compression ratios while accommodating various combustion chamber sizes. The FX Series pistons are perfect for those seeking a reliable upgrade that balances performance with OEM fitment and function.

Key Features:

Built with advanced engineering and attention to detail, the DSS Racing FX Series Forged Pistons include the following key features:

• Forged construction for superior strength and resistance to high stress
• Comp Height of 1.21 inches for precise deck clearance and piston-to-head fitment
• 12cc dish top design to optimize combustion chamber volume and compression ratio
• .927-inch piston pin diameter compatible with full-floating or press-fit configurations
• Ring groove dimensions of 1.2mm / 1.2mm / 3mm for reliable ring sealing and durability
• Designed for a 3.578-inch stroke and 6.243-inch connecting rod length
• Available with approximate compression ratios tailored to combustion chamber sizes: 65cc (9.43:1), 74cc (8.62:1), and 85cc (7.83:1)
• Precision machining ensures consistent performance and fitment across all pistons

Construction & Design:

The DSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, providing an excellent balance of lightweight design and exceptional strength. Forging enhances the metal’s grain structure, resulting in pistons that resist cracking, scuffing, and deformation under extreme heat and pressure. The dish top design reduces compression to accommodate various combustion chamber volumes, making these pistons versatile for different engine builds.

Each piston features carefully engineered ring grooves and pin bosses to ensure optimal sealing and durability. The option for full-floating or press-fit wrist pins allows compatibility with a range of connecting rod configurations, enhancing installation flexibility. The pistons are CNC-machined to exacting tolerances, guaranteeing consistent performance and reliable operation in demanding environments.

Installation & Fitment:

These pistons are designed as direct replacements for most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines, making installation straightforward for experienced engine builders and professional shops. The set fits the Gen III Small Block Mopar Hemi platform, ensuring compatibility with stock and modified engine components. Depending on your build, minor adjustments to ring end gaps or clearances may be necessary to optimize performance and longevity.

Installation requires standard engine assembly procedures, including proper cleaning, lubrication, and torque specifications. DSS Racing pistons are engineered to work seamlessly with OEM or aftermarket rods and rings designed for the 5.7L Hemi, providing a reliable foundation for your performance upgrade.

What's Included:

• Complete set of forged pistons for a 5.7L Small Block Mopar Gen III Hemi engine
• Pistons with -12cc dish tops and precision-machined ring grooves
• Compatible wrist pin options (full-floating or press-fit)
• Technical specifications and installation guidelines

Ideal For:

This piston set is ideal for automotive enthusiasts, engine builders, and performance shops upgrading or rebuilding Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines. Whether you are enhancing a street performance vehicle, preparing a race engine, or seeking improved durability for daily driving, the DSS Racing FX Series pistons offer a reliable and high-quality solution. They are especially suited for builds requiring forged components to handle increased power levels and higher RPMs.

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.