DSS Racing FX Series Forged Piston Set

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

1-6806-4065 / 2-6806-4065 / 3-6806-4065 / K1-6806-4065 / K2-6806-4065 / K3-6806-4065

Overview:

The DSS Racing 6.1 Stroker Gen III Hemi FX Series Forged Piston Set is engineered specifically for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.1L SRT8 engine. Designed to accommodate a 4.065" bore, these pistons are ideal for enthusiasts and professional builders seeking enhanced strength, durability, and reliability in stroked 6.1L small block Mopar Hemi Gen III engines.

These forged pistons deliver superior resistance to heat and detonation, making them perfect for high-boost, high-compression, and naturally aspirated builds. Whether you are upgrading your engine for street performance, track use, or drag racing, this piston set provides the foundation for consistent power gains and engine longevity.

Key Features:

Built with precision and performance in mind, the DSS Racing FX Series pistons offer the following key features:

• Compatible with 4.065" bore applications on Chrysler / Dodge / Jeep / Ram 6.1L SRT8 engines
• Forged construction for maximum strength and durability under extreme conditions
• Compensated dish top design with -23cc volume to optimize compression ratios
• Pin diameter of .927" with options for full-floating or press-fit configurations
• Ring groove dimensions of 1.2mm / 1.2mm / 3mm for reliable sealing and reduced friction
• Designed for a 4.050" stroke and 6.125" connecting rod length, supporting stroker builds
• Available in multiple compression volumes (65cc, 74cc, 85cc) to achieve approximate compression ratios of 9.91, 9.15, and 8.38 respectively
• Comp height of 1.09" for precise piston-to-deck clearance and optimal combustion chamber geometry

Construction & Design:

The DSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, providing an excellent balance of lightweight design and exceptional strength. The forging process enhances grain structure, resulting in pistons that resist cracking and deformation under high thermal and mechanical stress. The -23cc dish top design helps control compression ratio, reducing the risk of detonation in boosted or high-compression applications.

Each piston features precision-machined ring grooves and a robust pin bore designed to accept either full-floating or press-fit wrist pins, allowing builders to tailor the setup to their specific engine requirements. The pistons are engineered to maintain tight tolerances for consistent performance and longevity in demanding environments.

Installation & Fitment:

This piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 Gen III Hemi engines with a 4.065" bore. Installation requires standard engine assembly procedures and may involve balancing and blueprinting for optimal results. The pistons are compatible with a 4.050" stroke crankshaft and 6.125" connecting rods, making them ideal for stroker engine builds. Professional installation is recommended to ensure proper clearances and performance.

What's Included:

• Set of forged pistons (quantity as required for engine configuration)
• Wrist pin options for full-floating or press-fit installation
• Precision-machined piston ring grooves ready for ring installation

Ideal For:

This piston set is perfect for engine builders, performance enthusiasts, and professional racers upgrading or rebuilding 6.1L SRT8 Mopar Hemi engines. It is especially suited for stroker builds, forced induction setups, and naturally aspirated engines requiring enhanced durability and optimized compression ratios. Whether upgrading for street performance, drag racing, or track applications, these pistons provide a reliable foundation for increased power and engine longevity.

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.