DSS Racing FX Series Forged Piston Set

Fits Most Chrysler / Dodge / Jeep / Ram 5.7L Hemi Models

1-6706-3927 / 2-6706-3927 / 3-6706-3927 / K1-6706-3927 / K2-6706-3927 / K3-6706-3927

Overview:

The DSS Racing 5.7 Stroker Small Block Mopar Hemi Gen III FX Series Forged Piston Set is engineered for enthusiasts and builders seeking enhanced durability and performance for their 5.7L Hemi engines. Designed to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi models, these pistons are ideal for stroker builds, delivering reliable strength and precision in demanding applications.

With a compact height of 1.09 inches and a -23cc dish top design, these pistons optimize combustion chamber volume and compression ratios, supporting a range of performance goals. Whether upgrading for street performance or mild racing, this piston set provides a solid foundation for engine builders focused on longevity and power.

Key Features:

These forged pistons incorporate advanced design elements to meet the rigorous demands of stroker small block Mopar Hemi engines:

• Compatible with 392 Small Block Mopar Hemi Gen III engines and FX series configurations
• Compact piston height of 1.09 inches for optimized deck clearance
• 23cc dish top for improved combustion efficiency and tuning flexibility
• .927-inch wrist pin diameter with options for full-floating or press-fit installation
• Ring groove dimensions of 1.2mm/1.2mm/3mm to accommodate high-performance piston rings
• Designed for a 4.050-inch stroke and 6.125-inch connecting rods, ideal for stroker builds
• Available with approximate compression ratios ranging from 7.93:1 to 9.38:1 depending on combustion chamber volume (65cc, 74cc, 85cc)
• Precision forged construction for superior strength and durability under high stress

Construction & Design:

DSS Racing’s FX Series pistons are crafted from high-grade forged aluminum alloy, delivering exceptional strength-to-weight ratio and thermal conductivity. The forging process enhances grain structure, providing resistance to cracking and fatigue common in high-performance and stroker engines.

The pistons feature a carefully engineered dish top design with a -23cc volume to optimize combustion dynamics and allow for various compression setups. The wrist pin bore supports both full-floating and press-fit configurations, offering flexibility for different engine builds and preferences.

Ring grooves are precision-machined to tight tolerances, ensuring proper ring seating and sealing, which contributes to improved oil control and reduced blow-by. The overall design balances durability with weight savings to maintain engine responsiveness and efficiency.

Installation & Fitment:

This piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines, specifically those utilizing the Gen III small block Mopar Hemi platform. Installation requires standard engine assembly procedures and may necessitate matching the pistons to compatible rods and crankshafts for stroker configurations.

Builders should verify clearances and compression ratios based on their specific cylinder heads and engine setup. The pistons accommodate a 4.050-inch stroke and 6.125-inch rods, so proper measurement and balancing are essential for optimal performance and longevity.

What's Included:

• Set of 8 DSS Racing FX Series forged pistons
• Wrist pins sized at .927 inches (full-floating or press-fit options)
• Detailed specifications for ring groove dimensions and piston dish volume

Ideal For:

This piston set is ideal for engine builders and performance enthusiasts upgrading or rebuilding 5.7L Hemi engines with stroker kits. It suits applications ranging from street performance to mild racing, where enhanced durability and precise combustion chamber control are required. The pistons support various compression ratios, making them versatile for different tuning goals and fuel types.

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.