DSS Racing FX Series Forged Pistons

Fits Most Chrysler / Dodge / Jeep / Ram 6.2L Hellcat & Trackhawk Models

1-6862-4090 / 2-6862-4090 / 3-6862-4090 / K1-6862-4090 / K2-6862-4090 / K3-6862-4090

Overview:

The DSS Racing FX Series Forged Pistons are precision-engineered performance components designed specifically for the 6.2L Gen III Hemi engines found in most Chrysler, Dodge, Jeep, and Ram Hellcat and Trackhawk models. Crafted to handle extreme power and high RPM conditions, these pistons offer a reliable upgrade for enthusiasts seeking enhanced durability and performance in their high-output Mopar engines.

Built with a focus on strength and lightweight design, these pistons help improve engine response and longevity under demanding driving conditions, making them ideal for street performance, track use, and forced induction applications.

Key Features:

These forged pistons incorporate advanced design elements and manufacturing techniques to deliver superior performance and reliability:

• Compatible with 4.090" bore size for 6.2L Gen III Hemi engines
• Compensated dish top design with -10cc volume for optimized compression ratios
• 1.275" compression height for precise piston-to-cylinder fitment
• Ring groove dimensions: 1.2mm top and second rings, 3mm oil ring for effective sealing
• Pin diameter of .927" with options for full-floating or press-fit configurations
• Designed for 3.578" stroke and 6.2" connecting rods, matching factory specifications
• Available in multiple dish volumes to achieve approximate compression ratios of 10.22:1, 9.32:1, and 8.44:1
• Precision CNC machining ensures tight tolerances and consistent performance
• Engineered to withstand high cylinder pressures and temperatures typical of Hellcat power levels

Construction & Design:

The DSS Racing FX Series pistons are forged from high-strength aluminum alloy, providing an excellent balance of durability and lightweight characteristics. The forging process enhances the metal grain structure, resulting in pistons that resist cracking and deformation under extreme stress.

The pistons feature a carefully engineered dish top design that optimizes combustion chamber volume and compression ratio, allowing for improved power output and efficiency. The ring grooves are precisely machined to accommodate high-performance piston rings, ensuring superior sealing and reduced blow-by.

Pin bosses are reinforced to support either full-floating or press-fit wrist pins, offering flexibility depending on engine build preferences. Overall, the design focuses on maintaining factory dimensions while delivering enhanced strength and reliability for high-performance applications.

Installation & Fitment:

These pistons are designed as direct replacements for most Chrysler, Dodge, Jeep, and Ram 6.2L Hellcat and Trackhawk engines equipped with a 4.090" bore. Installation requires standard engine assembly procedures, and no major modifications are typically necessary when used with compatible rods and cylinders.

Proper ring end gap and clearance checks are recommended during installation to ensure optimal performance and longevity. These pistons are suitable for both naturally aspirated and forced induction setups, making them versatile for various build goals.

What's Included:

• Set of 8 DSS Racing FX Series forged pistons (4.090" bore)
• Wrist pin options: full-floating or press-fit (depending on SKU)
• Detailed specifications and installation guidelines

Ideal For:

These forged pistons are ideal for performance enthusiasts and professional builders upgrading or rebuilding 6.2L Gen III Hemi Hellcat and Trackhawk engines. Whether you are enhancing a street machine, preparing a drag car, or building a track-ready vehicle, these pistons provide the strength and precision needed to support increased power levels and demanding driving 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.