DSS Racing FX Series Forged Piston Set

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

1-6801-4055 / 2-6801-4055 / 3-6801-4055 / K1-6801-4055 / K2-6801-4055 / K3-6801-4055

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 the 418 Small Block Mopar Hemi Gen III platform, these pistons provide enhanced durability and reliability under extreme conditions. Ideal for enthusiasts and professional builders seeking to increase engine displacement and boost power output, this piston set supports stroker builds with a 4.050" stroke and a 6.125" rod length.

These forged pistons feature a -7cc dish top design and a compact 1.09" compression height, allowing for optimized combustion chamber volume and improved compression ratios. Whether upgrading for street performance or track use, the DSS Racing FX Series pistons deliver consistent strength and precision fitment for demanding rebuilds and engine upgrades.

Key Features:

Built for performance and reliability, the DSS Racing FX Series Forged Pistons offer the following key features:

• Compatible with most Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 Gen III Hemi engines
• Forged construction for superior strength and resistance to detonation
• 7cc dish top piston design for optimized combustion chamber volume
• Compression height of 1.09" for precise piston-to-deck clearance
• Pin diameter of .927" with options for full-floating or press-fit configurations
• Ring groove dimensions: 1.2mm top and second rings, 3mm oil ring for effective sealing
• Designed for stroker builds with a 4.050" stroke and 6.125" connecting rod length
• Available in multiple dish volume options to achieve approximate compression ratios of 11.64:1 (65cc), 10.57:1 (74cc), and 9.52:1 (85cc)
• Precision manufacturing ensures consistent fit and performance across all pistons

Construction & Design:

The DSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, providing an optimal balance of lightweight strength and thermal conductivity. The forging process enhances the metal’s grain structure, resulting in pistons that withstand high cylinder pressures and temperatures common in performance and racing environments.

Each piston features a carefully engineered dish top design to control compression ratio and promote efficient combustion. The ring grooves are machined to tight tolerances to accommodate performance ring sets, ensuring excellent sealing and reduced blow-by. The piston pins are designed for either full-floating or press-fit installation, allowing builders to select the best option for their engine setup.

Installation & Fitment:

This piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.1L SRT8 Gen III Hemi engine. Installation requires standard engine rebuild procedures, including proper cylinder honing and ring fitting. The pistons are compatible with stroker crankshafts featuring a 4.050" stroke and connecting rods measuring 6.125". Builders should verify clearances and compression ratios based on their specific engine configuration and intended use.

What's Included:

• Set of 8 DSS Racing FX Series forged pistons
• Piston pins (full-floating or press-fit options depending on SKU)
• Ring groove machining for 1.2/1.2/3mm ring sets

Ideal For:

This piston set is ideal for performance enthusiasts, engine builders, and racers looking to upgrade or rebuild their 6.1L SRT8 Gen III Hemi engines with a reliable, high-strength piston solution. It is particularly suited for stroker engine builds aiming to increase displacement and power output while maintaining durability and efficiency.

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.