DSS Racing FX Series Forged Piston Set

Fits Chrysler / Dodge / Jeep / Ram 6.2L Hellcat & 6.4L 392 Models

1-6816-4100 / 2-6816-4100 / 3-6816-4100 / K1-6816-4100 / K2-6816-4100 / K3-6816-4100

Overview:

The DSS Racing FX Series Forged Piston Set is engineered for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat and 6.4L 392 engines. Designed to handle the extreme demands of boosted and naturally aspirated setups, these pistons offer superior strength, durability, and precision fitment. Ideal for enthusiasts and professional builders aiming to maximize engine reliability and power output, this piston set ensures consistent performance under high stress.

With a 4.100" bore size and compatibility with popular Mopar Hemi Gen III platforms, these pistons provide an excellent foundation for engine builds requiring forged components that maintain OEM-style dimensions and clearances.

Key Features:

The DSS Racing FX Series Forged Pistons combine advanced engineering and quality materials to deliver outstanding performance and longevity. Key features include:

• Forged construction for enhanced strength and durability under high boost and high RPM conditions
• 4.100" bore size designed to fit most Chrysler / Dodge / Jeep / Ram 6.2L Hellcat and 6.4L 392 engines
• Compensated dish top design with -23cc volume for optimized compression ratios
• Pin diameter of .927" compatible with full-floating or press-fit configurations
• Ring groove dimensions of 1.2mm / 1.2mm / 3mm for reliable ring sealing and reduced friction
• Compatible with 6.125" connecting rods and 4.050" stroke engines
• Available in multiple dish volumes (65cc, 74cc, 85cc) to tailor compression ratios from approximately 8.51 to 10.07
• Precision CNC machining ensures tight tolerances and consistent piston geometry
• Designed specifically for 428 Small Block Mopar Hemi Gen III engines

Construction & Design:

These pistons are crafted from high-grade forged aluminum alloy, providing an optimal balance of lightweight strength and thermal conductivity. The forging process enhances grain structure, resulting in superior fatigue resistance and toughness compared to cast pistons. The dish top design with a -23cc volume helps control compression ratios, improving detonation resistance and combustion efficiency.

The piston pin bore is engineered to accept either full-floating or press-fit pins, offering flexibility depending on engine build preferences. Ring grooves are precision-machined to accommodate performance ring sets, ensuring excellent sealing and reduced blow-by. The pistons are designed to maintain OEM-style dimensions for straightforward installation without extensive modifications.

Installation & Fitment:

This piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat and 6.4L 392 engines, including popular models such as the Hellcat Charger, Challenger, Jeep Trackhawk, and Ram 1500 TRX. Installation requires standard engine assembly procedures and is compatible with existing 6.125" connecting rods and 4.050" stroke crankshafts.

Builders should verify clearances and ring end gaps during assembly to ensure optimal performance and longevity. These pistons are suitable for both full rebuilds and performance upgrades where forged components are desired for increased durability.

What's Included:

• Set of forged pistons (quantity as required for engine configuration)
• Precision-machined piston pins (full-floating or press-fit depending on selection)
• Ring grooves prepared for standard performance ring sets

Ideal For:

The DSS Racing FX Series Forged Piston Set is ideal for performance enthusiasts, professional engine builders, and racers seeking reliable, high-strength pistons for Mopar 6.2L Hellcat and 6.4L 392 engine builds. Whether upgrading a street machine, track car, or off-road vehicle, these pistons provide the durability and precision needed to handle increased power levels and demanding 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.