DSS Racing FX Series Forged Piston Set

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

1-6805-4085 / 2-6805-4085 / 3-6805-4085 / K1-6805-4085 / K2-6805-4085 / K3-6805-4085

Overview:

The DSS Racing 6.1 Stroker Small Block Mopar Hemi Gen III FX Series Forged Piston Set is engineered for enthusiasts and professional builders seeking durable, high-performance pistons tailored specifically for the 6.1L SRT8 engine platform. Designed to fit most Chrysler, Dodge, Jeep, and Ram models equipped with the 6.1L Hemi, this piston set supports stroker builds with a 4.050" stroke and is optimized for increased power and reliability.

These pistons are ideal for those upgrading their engine internals to handle higher boost levels, increased compression ratios, or extended RPM ranges while maintaining excellent strength and thermal resistance. Whether you are building a street performance engine or a track-focused powerplant, DSS Racing’s forged pistons deliver consistent performance and durability.

Key Features:

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

• Compatible with 6.1L Small Block Mopar Hemi Gen III engines, including most Chrysler, Dodge, Jeep, and Ram SRT8 models
• Forged construction for superior strength and durability under high-stress conditions
• Comp height of 1.09" for optimal piston-to-head clearance and combustion efficiency
• 18cc dish top design to support various compression ratios and combustion chamber volumes
• .927" wrist pin diameter with options for full-floating or press-fit configurations
• Ring groove dimensions of 1.2mm/1.2mm/3mm to accommodate high-performance piston rings
• Designed for a 4.050" stroke and 6.125" connecting rods, supporting stroker engine builds
• Approximate compression ratios available: 65cc dish for 10.5:1, 74cc for 9.65:1, and 85cc for 8.8:1
• Precision machining ensures tight tolerances and reliable fitment

Construction & Design:

DSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, chosen for its excellent strength-to-weight ratio and thermal conductivity. The forging process enhances the metal grain structure, resulting in pistons that resist cracking, scuffing, and deformation under extreme combustion pressures and temperatures.

The pistons feature a carefully engineered dish top design with a -18cc volume to optimize combustion chamber shape and compression ratio, allowing builders to tailor engine performance to specific needs. The wrist pin bore supports either full-floating or press-fit pins, providing flexibility depending on engine build preferences. Additionally, the ring grooves are precision cut to accommodate high-performance rings that maintain sealing and reduce blow-by.

Installation & Fitment:

This piston set is designed for direct fitment in most Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 engines, particularly those utilizing the Gen III Small Block Mopar Hemi platform. Installation requires standard engine assembly procedures, including proper ring end gap setting and wrist pin installation based on the chosen configuration (full-floating or press-fit).

Builders upgrading to a stroker setup with a 4.050" stroke and 6.125" rods will find these pistons engineered to maintain optimal piston-to-cylinder wall clearance and compression ratios. Professional installation is recommended to ensure precise torque specifications and clearances are met for reliable operation.

What's Included:

• Set of forged pistons compatible with 6.1L Small Block Mopar Hemi Gen III FX Series engines
• Wrist pins (.927" diameter) with options for full-floating or press-fit installation
• Precision-cut piston rings sized 1.2mm/1.2mm/3mm
• Detailed specifications for compression ratios and piston dish volumes

Ideal For:

This piston set is ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding 6.1L SRT8 engines who require durable forged pistons capable of handling increased power and higher RPMs. It suits stroker engine builds, forced induction applications, and naturally aspirated setups seeking improved strength and reliability over stock cast pistons.

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.