DSS Racing FX Series Forged Piston Set

Fits Most Chrysler / Dodge / Jeep / Ram 6.1L SRT8 Models

1-6805-4075 / 2-6805-4075 / 3-6805-4075 / K1-6805-4075 / K2-6805-4075 / K3-6805-4075

Overview:

The DSS Racing 6.1 Stroker Gen III Hemi FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 engines. Designed to accommodate a 4.075" bore, these pistons are ideal for enthusiasts looking to upgrade their 423 Small Block Mopar Hemi Gen III stroker builds. With a focus on durability and performance, this piston set offers a reliable solution for high-performance applications, ensuring enhanced strength and longevity under demanding conditions.

Whether you are building a street performance engine or a track-ready stroker, these forged pistons provide the necessary strength and precision to handle increased power and boost levels. Their compatibility with most 6.1L SRT8 models makes them a versatile choice for a wide range of Mopar enthusiasts.

Key Features:

These DSS Racing forged pistons incorporate advanced design features to optimize engine performance and reliability:

• Forged construction for superior strength and durability compared to cast pistons
• 4.075" bore size, compatible with most Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 engines
• Comp height of 1.09" for precise piston-to-head clearance and optimal compression
• 18cc dish top design to control compression ratio and improve combustion efficiency
• .927" pin diameter with options for full-floating or press-fit pins
• Ring groove dimensions of 1.2/1.2/3mm for reliable ring sealing and reduced friction
• Designed for a 4.050" stroke and 6.125" connecting rods, ideal for stroker engine builds
• Available in multiple dish volumes (65cc, 74cc, 85cc) to tailor compression ratios from 8.76 to 10.46

Construction & Design:

The DSS Racing FX Series pistons are crafted from high-quality forged aluminum alloy, providing an excellent balance of strength and lightweight performance. The forging process enhances the grain structure of the metal, resulting in pistons that resist cracking, scuffing, and thermal fatigue under high-stress conditions. The pistons feature a precision-machined dish top to optimize combustion chamber shape and control compression ratios, which is critical for maintaining engine efficiency and preventing detonation in high-performance applications.

Pin bosses are engineered to accept either full-floating or press-fit wrist pins, offering flexibility depending on your build preferences. The ring grooves are carefully cut to accommodate performance ring sets, ensuring a tight seal and minimizing blow-by. Overall, the design focuses on durability, precision, and compatibility with the Gen III Hemi stroker platform.

Installation & Fitment:

This piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 engines with a 4.075" bore, making it an excellent upgrade for Gen III Hemi stroker builds. Installation requires standard engine assembly procedures, including proper ring fitting, pin installation, and piston orientation. Depending on your engine build, minor clearancing may be necessary to accommodate the increased stroke and piston dimensions.

Professional installation is recommended to ensure optimal piston-to-cylinder wall clearance and to maintain engine reliability. These pistons are compatible with 6.125" connecting rods and a 4.050" stroke crankshaft, so verify component compatibility before assembly.

What's Included:

• Set of forged pistons (quantity as required for engine configuration)
• Wrist pin options (full-floating or press-fit, depending on SKU)
• Detailed specifications for bore size, dish volume, and ring groove dimensions

Ideal For:

This piston set is ideal for Mopar enthusiasts and engine builders seeking to upgrade their 6.1L SRT8 Gen III Hemi engines for increased displacement and performance. It suits stroker engine builds aiming for enhanced power output, durability, and reliability in street, strip, or mild race applications. Whether upgrading a factory engine or building a custom stroker, these pistons provide a solid foundation for high-performance Mopar powerplants.

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.