DSS Racing Gen III Hemi FX Series Forged Piston Set

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

1-6823-4065 / 2-6823-4065 / 3-6823-4065 / K1-6823-4065 / K2-6823-4065 / K3-6823-4065

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 handle high-performance demands, these pistons provide exceptional strength and durability for enthusiasts seeking to upgrade their engine’s reliability and power potential. Whether you are building a street performance engine or a track-ready setup, these forged pistons offer the precision and quality needed to maximize your build.

With a focus on compatibility and performance, this piston set fits the 371 Small Block Mopar Hemi Gen III platform, ensuring a perfect match for your 6.1L SRT8 engine. The pistons feature a compact dish design and optimized compression ratios to support a wide range of tuning options.

Key Features:

These DSS Racing pistons incorporate advanced engineering and materials to deliver superior performance and longevity. Key features include:

• Forged construction for enhanced strength and resistance to high stress
• FX Series design optimized for Gen III Hemi 6.1L engines
• Comp height of 1.21 inches for precise piston-to-head clearance
• 12cc dish top design to control compression and support various combustion chamber sizes
• Pin diameter of .984 inches, compatible with full-floating or press-fit configurations
• Ring groove dimensions of 1.2mm / 1.2mm / 3mm for reliable ring sealing and reduced friction
• Stroke compatibility of 3.578 inches and rod length of 6.243 inches for balanced engine geometry
• Available compression ratios approximately 9.88:1 (65cc), 9.04:1 (74cc), and 8.2:1 (85cc) to suit different performance goals

Construction & Design:

Each piston in the DSS Racing Gen III Hemi FX Series set is precision forged from high-grade aluminum alloy, providing an optimal balance of lightweight strength and thermal conductivity. The forging process enhances grain structure, resulting in superior fatigue resistance and durability under extreme operating conditions. The pistons are CNC-machined to exact tolerances, ensuring consistent fitment and performance across all cylinders.

The dish top design reduces compression volume, allowing for fine-tuning of combustion characteristics to match your engine’s setup. The pin bore supports both full-floating and press-fit wrist pin configurations, offering flexibility depending on your build preferences. Additionally, the ring grooves are engineered to maintain ring stability while minimizing friction and wear.

Installation & Fitment:

This piston set is designed as a direct fit for most Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.1L SRT8 Gen III Hemi engine. Installation requires standard engine assembly procedures, and no major modifications are typically necessary when replacing factory pistons with this set. Proper ring end gap and clearance checks should be performed to ensure optimal performance and longevity.

These pistons are ideal for engine builders and enthusiasts upgrading or rebuilding their 6.1L Hemi engines who demand reliable, high-quality components that can withstand increased power levels and aggressive driving conditions.

What's Included:

• Set of forged pistons for all cylinders in the 6.1L Gen III Hemi engine
• Compatible wrist pin bore for full-floating or press-fit pins
• Precision-machined ring grooves ready for piston rings (rings not included)

Ideal For:

• Performance engine builds on Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 platforms
• Street and track enthusiasts seeking durable forged pistons
• Rebuilds requiring high-strength pistons to handle increased boost or power
• Engineers tuning compression ratios for specific fuel or power goals

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.