DSS Racing FX Series Forged Piston Set

Chrysler / Dodge / Jeep / Ram 5.7L Hemi

1-6708-3917 / 2-6708-3917 / 3-6708-3917 / K1-6708-3917 / K2-6708-3917 / K3-6708-3917

Overview:

The DSS Racing FX Series Forged Piston Set is engineered specifically for the 5.7L Stroker Small Block Mopar Gen III Hemi engines found in most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi models. Designed to deliver superior strength and durability, these pistons are ideal for enthusiasts and builders looking to enhance engine performance and reliability under demanding conditions. Whether you are upgrading for increased power, improved efficiency, or engine rebuilds, this piston set offers a precision fit and robust construction to meet high-performance needs.

With a compact design and optimized dome volume, these pistons help achieve ideal compression ratios for various combustion chamber sizes, making them versatile for different tuning setups and performance goals.

Key Features:

The DSS Racing FX Series Forged Pistons combine advanced engineering with high-quality materials to provide a reliable upgrade for your 5.7L Hemi engine. Key features include:

• Forged construction for maximum strength and durability under high stress
• Comp height of 1.09" for precise piston-to-head clearance
• +9cc dome top design to optimize combustion chamber volume and compression ratios
• Pin diameter of .927" with options for full-floating or press-fit installation
• Ring groove dimensions of 1.2/1.2/3mm to accommodate high-performance piston rings
• Compatible with a 4.050" stroke and 6.125" connecting rods for stroker engine builds
• Available in multiple dome volumes (65cc, 74cc, 85cc) to tailor compression ratios from approximately 10.52:1 to 13.5:1
• Designed specifically for the Small Block Mopar Gen III Hemi architecture

Construction & Design:

These pistons are crafted from premium forged aluminum alloy, providing an excellent balance of lightweight properties and exceptional strength. The forging process enhances the metal’s grain structure, resulting in superior resistance to cracking and deformation during high RPM and boost conditions. The dome top design is precision-machined to ensure consistent combustion chamber volumes, which is critical for tuning and performance optimization.

The piston pin bore is engineered to accept either full-floating or press-fit pins, offering flexibility depending on your engine build preferences. Additionally, the ring grooves are cut to tight tolerances to ensure proper ring seating and sealing, which helps maintain compression and reduce blow-by.

Installation & Fitment:

The DSS Racing FX Series Forged Pistons are designed as direct replacements for most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines, including stroker configurations with a 4.050" stroke and 6.125" rods. Installation requires standard engine rebuild procedures, and depending on your setup, you may need to verify piston-to-valve clearance and deck height. These pistons fit Small Block Mopar Gen III Hemi blocks and are compatible with factory or aftermarket components designed for this platform.

Professional installation is recommended to ensure proper ring end gap, piston pin fitment, and torque specifications are met for optimal performance and longevity.

What's Included:

• Set of forged pistons (quantity as per engine requirements)
• Piston pins (full-floating or press-fit options depending on SKU)
• Ring groove machining for high-performance piston rings
• Technical specifications and installation guidelines

Ideal For:

This piston set is ideal for automotive enthusiasts, engine builders, and performance tuners who are upgrading or rebuilding Chrysler, Dodge, Jeep, or Ram 5.7L Hemi engines. It suits applications ranging from street performance to moderate racing and stroker engine builds where enhanced durability and compression tuning are critical. Whether you are increasing displacement or optimizing combustion efficiency, these pistons provide a reliable foundation for your high-performance engine project.

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.