DSS Racing FX Series Forged Piston Set

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

1-6710-3917C / 2-6710-3917C / 3-6710-3917C / K1-6710-3917C / K2-6710-3917C / K3-6710-3917C

Overview:

The DSS Racing Gen III Hemi FX Series Forged Piston Set is engineered specifically for the 5.7L Chrysler, Dodge, Jeep, and Ram Hemi engines. Designed to meet the demands of high-performance builds, these pistons provide exceptional strength and durability while maintaining precise tolerances for optimal engine efficiency. Whether you are upgrading your stock engine or building a high-output powerplant, this piston set offers a reliable foundation for improved combustion and power delivery.

Ideal for enthusiasts and professional builders alike, these pistons are crafted to withstand the rigors of forced induction, high RPM, and increased cylinder pressures. The FX Series pistons balance lightweight construction with robust design, helping to reduce reciprocating mass and improve throttle response.

Key Features:

These DSS Racing forged pistons incorporate advanced engineering to enhance performance and reliability. Key features include:

• Compatible with 366 Small Block Mopar Hemi Gen III engines
• Forged construction for superior strength and durability
• Flat top design with a -1.5cc dish for optimized combustion chamber volume
• Compression height of 1.21 inches for precise piston-to-deck clearance
• .927-inch wrist pin diameter with options for full-floating or press-fit pins
• Ring groove dimensions of 1.2mm / 1.2mm / 3mm for reliable ring sealing
• Designed for a 3.795-inch stroke and 6.125-inch connecting rods
• Available in multiple combustion chamber volumes to tailor compression ratios (65cc, 74cc, 85cc)
• Approximate compression ratios ranging from 8.9:1 to 11.01:1 depending on chamber volume

Construction & Design:

DSS Racing FX Series pistons are crafted from high-quality forged aluminum alloy, delivering an excellent strength-to-weight ratio essential for high-performance applications. The forging process enhances the metal’s grain structure, resulting in pistons that resist cracking and deformation under extreme conditions. The flat top design with a slight dish improves combustion efficiency and helps control detonation in boosted or naturally aspirated setups.

The pistons feature precision-machined ring grooves and pin bores to ensure proper ring seal and wrist pin fitment. The option for full-floating or press-fit wrist pins allows builders to customize the assembly based on their specific engine requirements and performance goals.

Installation & Fitment:

This piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines equipped with the Gen III small block configuration. Installation requires standard engine assembly procedures, and these pistons are compatible with the factory stroke of 3.795 inches and 6.125-inch connecting rods. Builders should verify piston-to-deck clearance and ring end gaps during assembly to ensure optimal performance and longevity.

Due to the precision engineering and multiple combustion chamber volume options, these pistons can be tailored to various compression ratio targets, making them suitable for both street and race applications.

What's Included:

• Set of 8 DSS Racing FX Series forged pistons
• Wrist pins (full-floating or press-fit options depending on selection)
• Ring groove machining for standard piston rings
• Technical specifications and installation guidelines

Ideal For:

This piston set is ideal for performance enthusiasts, engine builders, and racers seeking a durable, high-quality piston solution for the 5.7L Gen III Hemi platform. Whether upgrading a stock engine for increased power or building a custom high-performance motor, these pistons provide the strength and precision needed for reliable operation under demanding conditions.

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.