DSS Racing FX Series Forged Pistons Set

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

1-6713-3917 / 2-6713-3917 / 3-6713-3917 / K1-6713-3917 / K2-6713-3917 / K3-6713-3917

Overview:

The DSS Racing FX Series Forged Pistons Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines, including the 345 Small Block Mopar Hemi Gen III. Designed for enthusiasts and professional builders seeking enhanced durability and performance, these pistons offer a reliable upgrade over stock components. Whether you're building a high-performance street engine or a race-ready powerplant, the FX Series pistons deliver the strength and precision needed to handle increased power and demanding conditions.

With a compact design featuring a -12cc dish top and a compression height of 1.21 inches, these pistons optimize combustion efficiency and allow for flexible compression ratios. Their compatibility with full-floating or press-fit wrist pins ensures adaptability to various engine builds.

Key Features:

The DSS Racing FX Series Forged Pistons combine advanced engineering with high-quality materials to provide superior performance and reliability. Key features include:

• Forged construction for maximum strength and durability under high stress
• Compatible with Chrysler / Dodge / Jeep / Ram 5.7L Hemi engines (Gen III 345 Small Block Mopar Hemi)
• Compact piston design with a -12cc dish top for optimized combustion chamber volume
• Compression height of 1.21 inches for precise piston-to-deck clearance
• Pin diameter of .927 inches, supporting full-floating or press-fit wrist pin configurations
• Ring groove dimensions of 1.2mm / 1.2mm / 3mm for reliable ring sealing and reduced friction
• Stroke compatibility of 3.578 inches and connecting rod length of 6.243 inches
• Available in multiple dish volumes to achieve approximate compression ratios of 9.33:1 (65cc), 8.53:1 (74cc), and 7.74:1 (85cc)

Construction & Design:

Each piston in the FX Series is precision forged from high-grade aluminum alloy, delivering an optimal balance of lightweight design and structural integrity. The forging process enhances grain structure, resulting in superior fatigue resistance and the ability to withstand elevated combustion pressures. The pistons feature a carefully engineered dish top to control compression ratios and reduce the risk of detonation in boosted or high-performance naturally aspirated applications.

The ring grooves are machined to tight tolerances to ensure proper ring fitment and sealing, while the wrist pin bores accommodate either full-floating or press-fit pins, providing flexibility for different engine assembly preferences. This attention to detail in design and manufacturing ensures consistent performance and longevity in demanding environments.

Installation & Fitment:

The DSS Racing FX Series Forged Pistons are designed as direct replacements for factory pistons in most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines. Installation requires standard engine assembly procedures, with careful attention to ring end gap and piston-to-wall clearances. These pistons are compatible with the Gen III 345 Small Block Mopar Hemi platform and fit engines with a 3.578-inch stroke and 6.243-inch connecting rods.

Builders should verify compression ratio requirements based on the selected dish volume to ensure optimal engine performance and reliability. No major modifications are typically necessary, making these pistons an excellent choice for performance upgrades or rebuilds.

What's Included:

• Set of forged pistons (quantity as per engine requirements)
• Compatible wrist pins (full-floating or press-fit options depending on SKU)
• Ring groove machining for standard piston rings
• Technical specifications and installation guidelines

Ideal For:

The DSS Racing FX Series Forged Pistons are ideal for automotive enthusiasts, engine builders, and racers upgrading or rebuilding Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines. They suit applications ranging from street performance builds to moderate racing setups where increased strength, durability, and precise compression control are critical. These pistons provide a reliable foundation for enhancing engine power and longevity without compromising factory fitment.

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.