DSS Racing FX Series Forged Piston Set

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

1-6867-4100 / 2-6867-4100 / 3-6867-4100 / K1-6867-4100 / K2-6867-4100 / K3-6867-4100

Overview:

The DSS Racing FX Series Forged Piston Set is engineered specifically for the 6.2L Small Block Mopar Gen III Hemi engines found in most Chrysler, Dodge, Jeep, and Ram Hellcat and Trackhawk models. Designed to handle the extreme power and stress of high-performance applications, these pistons provide enhanced strength, durability, and reliability over stock components. Whether you are building a street performance engine or a track-ready powerhouse, this piston set offers the precision and quality needed to maximize your engine’s potential.

With a compact dome top design and carefully calculated compression ratios, these pistons optimize combustion efficiency while maintaining compatibility with factory components. The FX Series pistons are ideal for enthusiasts and professional builders seeking a dependable upgrade that supports aggressive tuning and high boost levels.

Key Features:

Built to meet the demands of high-output Mopar Hemi engines, the DSS Racing FX Series Forged Pistons include the following key features:

• Forged construction for superior strength and resistance to detonation
• Comp height of 1.275" for precise deck clearance and optimal piston-to-head clearance
• +4cc dome top design to fine-tune compression ratios for various combustion chamber sizes
• .927" wrist pin diameter with options for full-floating or press-fit pins
• Ring groove dimensions of 1.2mm/1.2mm/3mm to accommodate high-performance piston rings
• Compatible with 3.578" stroke and 6.2" connecting rods typical of the 6.2L Hellcat engine
• Available in multiple dome volumes to achieve approximate compression ratios of 12.12:1 (65cc), 10.84:1 (74cc), and 9.64:1 (85cc)
• Precision CNC machining ensures tight tolerances and consistent performance

Construction & Design:

The 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 grain structure, resulting in pistons that withstand the intense pressures and temperatures generated by forced induction and high RPM operation. The dome top design is engineered to optimize combustion chamber dynamics, improving power output and throttle response.

Each piston features a durable ring groove profile designed to maintain ring seal under extreme conditions, reducing blow-by and oil consumption. The wrist pin options allow builders to select either full-floating or press-fit configurations based on their specific application and performance goals. This flexibility ensures compatibility with a wide range of engine builds and assembly preferences.

Installation & Fitment:

These pistons are designed as direct replacements for the 6.2L Small Block Mopar Gen III Hemi found in most Chrysler, Dodge, Jeep, and Ram Hellcat and Trackhawk models. Installation requires standard engine assembly 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 rebuilds or engine builds.

It is recommended to verify piston-to-valve clearance and deck height during installation to ensure optimal fitment and avoid interference. Professional installation is advised to maintain engine reliability and performance.

What's Included:

• Set of forged pistons (quantity as per engine requirements)
• Wrist pins (full-floating or press-fit, depending on selected option)
• Retaining clips for wrist pins

Ideal For:

This piston set is ideal for performance enthusiasts, professional engine builders, and racers who demand reliable, high-strength components for their 6.2L Hellcat or Trackhawk engines. Whether upgrading a stock engine for increased boost levels, building a naturally aspirated high-compression motor, or assembling a custom race engine, the DSS Racing FX Series pistons deliver the durability and precision needed to support aggressive power goals.

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.