DSS Racing FX Series Forged Piston Set

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

1-6852-4100 / 2-6852-4100 / 3-6852-4100 / K1-6852-4100 / K2-6852-4100 / K3-6852-4100

Overview:

The DSS Racing FX Series Forged Piston Set is engineered specifically for the 6.2L Gen III Hemi engines found in many Chrysler, Dodge, Jeep, and Ram Hellcat and Trackhawk models. Designed to handle high-performance demands, these pistons offer exceptional strength and durability for enthusiasts looking to upgrade their engine’s internals. Whether you are building a street performance engine or a track-ready powerhouse, this piston set provides reliable, precision-crafted components to improve engine efficiency and longevity.

With a 4.100" bore size and a compact dish top design, these pistons are optimized for a range of compression ratios, making them versatile for various build goals. The set is ideal for those seeking to maintain factory-like dimensions while enhancing the engine’s ability to withstand increased power and boost levels.

Key Features:

These forged pistons incorporate advanced design elements and manufacturing techniques to ensure peak performance and reliability:

• Compatible with 6.2L Gen III Hemi engines, including Hellcat and Trackhawk models
• 4.100" bore size tailored for 378 Small Block Mopar Hemi applications
• Compact 10cc dish top for optimized combustion chamber volume
• Pin diameter of .945" available in full-floating or press-fit configurations
• Ring groove dimensions: 1.2mm top and second rings, 3mm oil ring for effective sealing
• Designed for a 3.578" stroke and 6.2" connecting rod length
• Available in multiple compression heights (1.275" comp height) to suit different engine builds
• Approximate compression ratios ranging from 8.48 to 10.26 depending on combustion chamber volume
• Precision forged construction for superior strength and heat resistance

Construction & Design:

DSS Racing’s FX Series pistons are forged from high-grade aluminum alloy, providing an excellent balance of lightweight design and structural integrity. The forging process enhances grain structure, resulting in pistons that resist cracking and deformation under extreme heat and pressure. The pistons feature a compact dish top design with a -10cc volume to optimize combustion efficiency and reduce detonation risk.

The pin bore is engineered for either full-floating or press-fit wrist pins, allowing builders to select the best option for their application. Ring grooves are precision-machined to accommodate high-performance piston rings, ensuring superior sealing and oil control. Overall, the design focuses on durability and compatibility with factory components, making these pistons a reliable upgrade for high-output 6.2L Hemi engines.

Installation & Fitment:

This piston set is designed as a direct fit for most Chrysler, Dodge, Jeep, and Ram 6.2L Hellcat and Trackhawk engines with a 4.100" bore. Installation requires standard engine assembly procedures and may involve balancing and blueprinting depending on the build. No major modifications are typically necessary, but professional installation is recommended to ensure optimal performance and longevity.

What's Included:

• Set of forged pistons sized for 4.100" bore
• Wrist pin options: full-floating or press-fit (depending on SKU)
• Precision-machined ring grooves ready for high-performance piston rings

Ideal For:

This piston set is ideal for performance enthusiasts and engine builders upgrading or rebuilding 6.2L Gen III Hemi engines in Hellcat and Trackhawk vehicles. It suits applications ranging from street performance to drag racing and high-boost forced induction setups, providing enhanced durability and reliability under increased power demands.

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.