DSS Racing FX Series Forged Piston Set

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

1-6718-3927C / 2-6718-3927C / 3-6718-3927C / K1-6718-3927C / K2-6718-3927C / K3-6718-3927C

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 and high-performance applications. Featuring a forged construction and a +9cc dome top design, this piston set delivers improved strength and optimized combustion chamber volume for increased power potential and reliability under demanding conditions.

Whether you are upgrading your engine for street performance, racing, or heavy-duty use, these pistons provide a solid foundation for building a robust and efficient powerplant.

Key Features:

These FX Series forged pistons incorporate advanced design and manufacturing techniques to meet the rigorous demands of high-performance Mopar Hemi engines. Key features include:

• Forged construction for superior strength and durability compared to cast pistons
• +9cc dome top to optimize compression ratio and combustion efficiency
• Comp height of 1.21" for precise piston-to-deck clearance
• .927" wrist pin diameter compatible with full-floating or press-fit configurations
• Ring groove dimensions of 1.2mm / 1.2mm / 3mm for reliable ring sealing and reduced blow-by
• Designed for a 3.795" stroke and 6.125" connecting rod length, ideal for stroker builds
• Available with approximate compression ratios of 12.79:1 (65cc), 11.34:1 (74cc), and 9.98:1 (85cc) to suit various engine setups
• Precision machining ensures consistent fitment and performance

Construction & Design:

The DSS Racing FX Series pistons are crafted from high-quality forged aluminum alloy, providing an excellent balance of strength, weight, and thermal conductivity. Forging enhances the grain structure of the metal, resulting in pistons that resist cracking, scuffing, and deformation under high cylinder pressures and temperatures.

The dome top design increases the piston’s compression ratio, improving combustion efficiency and power output. The pistons are engineered with tight tolerances for comp height and wrist pin fitment, ensuring compatibility with Gen III 5.7L Hemi stroker configurations. Ring grooves are precisely cut to accommodate performance rings, maintaining optimal sealing and oil control.

Installation & Fitment:

This piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines, particularly those utilizing the Gen III small block Hemi platform with a 3.795" stroke and 6.125" rod length. Installation typically requires standard engine rebuild procedures, including proper honing and cleaning of the cylinder bores, as well as careful measurement to confirm piston-to-deck clearance and ring end gaps.

Depending on your build, these pistons can be used with either full-floating or press-fit wrist pins, providing flexibility for different connecting rod configurations. It is recommended to consult with a professional engine builder to ensure optimal assembly and performance.

What's Included:

• Set of 8 forged pistons with +9cc dome tops
• Wrist pins sized at .927" diameter
• Ring grooves pre-cut for 1.2/1.2/3mm ring sets

Ideal For:

This piston set is ideal for Mopar enthusiasts and engine builders looking to upgrade or rebuild their 5.7L Hemi engines for increased displacement, durability, and performance. It suits stroker engine projects, high-compression builds, and applications requiring forged components capable of handling elevated boost, nitrous, or naturally aspirated power levels.

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.