DSS Racing Gen III Hemi FX Series Forged Piston Set

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

1-6847-4125 / 2-6847-4125 / 3-6847-4125 / K1-6847-4125 / K2-6847-4125 / K3-6847-4125

Overview:

The DSS Racing Gen III Hemi FX Series Forged Piston Set is engineered specifically for the 6.1L SRT8 engines found in various Chrysler, Dodge, Jeep, and Ram models. Designed to meet the demanding needs of performance enthusiasts and professional builders, these pistons offer exceptional strength and durability under high-stress conditions. Whether you are upgrading your engine for increased power or rebuilding for reliability, this piston set delivers precision fitment and enhanced combustion efficiency.

Built to accommodate the 383 Small Block Mopar Hemi Gen III platform, these pistons feature a +4cc dome top design that optimizes compression ratios for improved power output. Their comp height of 1.21 inches and pin diameter of .927 inches ensure compatibility with full-floating or press-fit wrist pins, providing flexibility for various engine builds.

Key Features:

These forged pistons incorporate advanced design elements and manufacturing techniques to maximize performance and longevity:

• Forged construction for superior strength and resistance to detonation
• +4cc dome top to increase compression ratio and combustion efficiency
• Comp height of 1.21 inches tailored for Gen III Hemi applications
• .927-inch wrist pin diameter compatible with full-floating or press-fit pins
• Precision ring grooves sized at 1.2mm / 1.2mm / 3mm for optimal ring seal
• Designed for a 3.578-inch stroke and 6.243-inch connecting rod length
• Available in multiple combustion chamber volumes (65cc, 74cc, 85cc) to suit different compression ratio needs
• Compatible with 6.1L SRT8 engines from Chrysler, Dodge, Jeep, and Ram

Construction & Design:

Each piston in the DSS Racing FX Series is forged from high-grade aluminum alloy, providing an excellent balance of lightweight construction and structural integrity. The forging process enhances grain flow and material density, resulting in pistons that withstand extreme heat and pressure typical of high-performance and forced induction engines.

The dome top design with a +4cc volume increases the effective compression ratio, improving throttle response and power delivery without compromising reliability. The pistons are engineered with precise ring grooves to maintain optimal ring seal and reduce blow-by, contributing to improved engine efficiency and longevity.

Installation & Fitment:

These pistons are designed as direct replacements for the 6.1L SRT8 Gen III Hemi engines found in Chrysler, Dodge, Jeep, and Ram vehicles. Installation requires standard engine rebuild procedures and may involve balancing and blueprinting for optimal performance. The pistons accommodate either full-floating or press-fit wrist pins, allowing flexibility depending on your build preferences.

Due to their precise dimensions and compatibility with stock components, minimal modifications are necessary, making them an excellent choice for both performance upgrades and reliable rebuilds.

What's Included:

• Set of forged pistons for 6.1L Gen III Hemi engines
• Compatible with full-floating or press-fit wrist pins
• Precision-machined ring grooves
• Multiple combustion chamber volume options (65cc, 74cc, 85cc)

Ideal For:

• Performance enthusiasts upgrading their 6.1L SRT8 engines
• Engine builders seeking durable, high-strength pistons for street or track use
• Rebuilders requiring reliable, OEM-compatible pistons for Chrysler, Dodge, Jeep, and Ram Gen III Hemi engines
• Applications demanding improved compression ratios and combustion 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.