DSS Racing FX Series Forged Pistons
Chrysler / Dodge / Jeep / Ram 6.1L SRT8 Gen III Hemi Engines
1-6823-4075 / 2-6823-4075 / 3-6823-4075 / K1-6823-4075 / K2-6823-4075 / K3-6823-4075
Overview:
The DSS Racing FX Series Forged Pistons are precision-engineered components designed specifically for Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.1L SRT8 Gen III Hemi engines. These pistons are crafted to deliver superior strength and durability, making them ideal for enthusiasts and professional builders seeking to enhance engine reliability and performance under demanding conditions.
Featuring a 4.075" bore size and a compact dish top design with a -12cc volume, these pistons optimize combustion efficiency and compression ratios. Whether you are upgrading a street machine or building a high-performance race engine, the FX Series pistons provide the robust foundation needed for sustained power and longevity.
Key Features:
Engineered with advanced materials and design, the DSS Racing FX Series Forged Pistons offer a range of features that improve engine performance and durability:
- Compatible with Chrysler / Dodge / Jeep / Ram 6.1L SRT8 Gen III Hemi engines
- 4.075" bore size tailored for 373 Small Block Mopar Hemi Gen III applications
- Compact dish top with -12cc volume to optimize combustion chamber shape
- Pin diameter of .984" with options for full-floating or press-fit configurations
- Ring groove dimensions of 1.2mm / 1.2mm / 3mm for reliable ring sealing
- Stroke length of 3.578" and connecting rod length of 6.243" for precise engine geometry
- Available in multiple compression ratios approximately ranging from 8.24 to 9.93 depending on combustion chamber volume
- Forged construction for enhanced strength and resistance to high-stress conditions
Construction & Design:
DSS Racing FX Series pistons are forged from high-quality aluminum alloy, providing an excellent balance of lightweight design and structural integrity. The forging process enhances grain structure and strength, allowing these pistons to withstand the high pressures and temperatures typical of high-performance Hemi engines.
The pistons feature a carefully engineered dish top design with a -12cc volume that helps control compression and combustion characteristics. Precision machining ensures tight tolerances for optimal fitment and performance, while the choice between full-floating or press-fit wrist pins allows customization based on engine build preferences.
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 assembly procedures, with attention to proper ring end gap and wrist pin installation based on the selected pin configuration.
Due to their exact bore and stroke specifications, these pistons fit seamlessly into compatible engine blocks without the need for extensive modifications, making them suitable for both rebuilds and performance upgrades.
What's Included:
- Set of four DSS Racing FX Series forged pistons (4.075" bore)
- Wrist pins (.984" diameter) with options for full-floating or press-fit installation
- Precision-machined piston rings with 1.2/1.2/3mm groove dimensions
- Technical specifications and installation guidelines
Ideal For:
These pistons are ideal for automotive enthusiasts, engine builders, and professional racers who demand reliable, high-strength components for their 6.1L SRT8 Gen III Hemi engines. Whether upgrading for increased power output, durability, or engine longevity, the DSS Racing FX Series pistons provide a solid foundation for performance builds and rebuilds alike.
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.
DSS Racing FX Series Forged Pistons Set 4.075" Bore: Fits most Hemi Models
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1-6823-4075 DSS Racing 05-10 Chrysler / Dodge / Jeep / Ram 6.1L SRT8 FX Series Forged Pistons. Designed for Gen III Hemi engines, these forged pistons feature a 4.075" bore and a -12cc dish top for optimized combustion. With a comp height of 1.21 and precise ring grooves, they offer enhanced strength and durability under high-performance conditions. Ideal for enthusiasts seeking improved power and reliability, these pistons support full-floating or press-fit wrist pins, ensuring a perfect fit and long-lasting engine performance.
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DSS Racing FX Series Forged Pistons
Chrysler / Dodge / Jeep / Ram 6.1L SRT8 Gen III Hemi Engines
1-6823-4075 / 2-6823-4075 / 3-6823-4075 / K1-6823-4075 / K2-6823-4075 / K3-6823-4075
Overview:
The DSS Racing FX Series Forged Pistons are precision-engineered components designed specifically for Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.1L SRT8 Gen III Hemi engines. These pistons are crafted to deliver superior strength and durability, making them ideal for enthusiasts and professional builders seeking to enhance engine reliability and performance under demanding conditions.
Featuring a 4.075" bore size and a compact dish top design with a -12cc volume, these pistons optimize combustion efficiency and compression ratios. Whether you are upgrading a street machine or building a high-performance race engine, the FX Series pistons provide the robust foundation needed for sustained power and longevity.
Key Features:
Engineered with advanced materials and design, the DSS Racing FX Series Forged Pistons offer a range of features that improve engine performance and durability:
- Compatible with Chrysler / Dodge / Jeep / Ram 6.1L SRT8 Gen III Hemi engines
- 4.075" bore size tailored for 373 Small Block Mopar Hemi Gen III applications
- Compact dish top with -12cc volume to optimize combustion chamber shape
- Pin diameter of .984" with options for full-floating or press-fit configurations
- Ring groove dimensions of 1.2mm / 1.2mm / 3mm for reliable ring sealing
- Stroke length of 3.578" and connecting rod length of 6.243" for precise engine geometry
- Available in multiple compression ratios approximately ranging from 8.24 to 9.93 depending on combustion chamber volume
- Forged construction for enhanced strength and resistance to high-stress conditions
Construction & Design:
DSS Racing FX Series pistons are forged from high-quality aluminum alloy, providing an excellent balance of lightweight design and structural integrity. The forging process enhances grain structure and strength, allowing these pistons to withstand the high pressures and temperatures typical of high-performance Hemi engines.
The pistons feature a carefully engineered dish top design with a -12cc volume that helps control compression and combustion characteristics. Precision machining ensures tight tolerances for optimal fitment and performance, while the choice between full-floating or press-fit wrist pins allows customization based on engine build preferences.
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 assembly procedures, with attention to proper ring end gap and wrist pin installation based on the selected pin configuration.
Due to their exact bore and stroke specifications, these pistons fit seamlessly into compatible engine blocks without the need for extensive modifications, making them suitable for both rebuilds and performance upgrades.
What's Included:
- Set of four DSS Racing FX Series forged pistons (4.075" bore)
- Wrist pins (.984" diameter) with options for full-floating or press-fit installation
- Precision-machined piston rings with 1.2/1.2/3mm groove dimensions
- Technical specifications and installation guidelines
Ideal For:
These pistons are ideal for automotive enthusiasts, engine builders, and professional racers who demand reliable, high-strength components for their 6.1L SRT8 Gen III Hemi engines. Whether upgrading for increased power output, durability, or engine longevity, the DSS Racing FX Series pistons provide a solid foundation for performance builds and rebuilds alike.
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.
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YEARMAKEMODELSUBMODEL2006 - 2010Chrysler300C6.1L SRT82008 - 2010DodgeChallenger6.1L SRT82006 - 2010DodgeCharger6.1L SRT82006 - 2008DodgeMagnum6.1L SRT82006 - 2010JeepGrand Cherokee6.1L SRT8
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Standard shipping
Free Standard Shipping on orders over $300. Select “Free Shipping” at checkout. *Exclusions apply on oversized and freight items.
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Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.
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Compression Ratio Calculator
Calculate your engine's compression ratio and CID
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Features Piston Series E SeriesE SX SeriesSX 1-FX Series1-FX 2-FX Series2-FX 3-FX Series3-FX Broached pin oiling slots Drilled, forced wrist pin oiling Forged drain-back windows Drilled bottom ring land intersecting oil groove drain-backs Slightly larger, deeper valve reliefs than OEM CNC machined valve reliefs for moderate performance heads and cam combinations Larger, deeper CNC valve reliefs for more aggressive cylinder head and cam combinations Premium Aircraft spec. 4032 low expansion alloy Premium Aircraft spec. 2618 alloy Blower, Turbo, NOS ready Brushed piston crown Additional CNC milling for weight reduction Patented "X Groove" skirt for superior cylinder and ring life Thinner/shallower ring grooves for max ring seal Low volume contact reduction grooves 2nd ring land accumulator groove prevents flutter 3rd ring land scraper relief Oil ring groove relief reservoir Inner and outer pin boss weight reduction Tighter crown thickness control for lighter parts Dynamic skirt milling for consistent weight Diamond-turned high strength skirts High-strength piston pins Extreme Duty XR wrist pins Horizontal Gas Ports enhance ring seal Forged and machined in the USA
Standard shipping
Free Standard Shipping on orders over $300. Select “Free Shipping” at checkout. *Exclusions apply on oversized and freight items.
Free Easy Returns
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.
Compression Ratio Calculator
Calculate your engine's compression ratio and CID
| Features | Piston Series | ||||
|---|---|---|---|---|---|
| E SeriesE | SX SeriesSX | 1-FX Series1-FX | 2-FX Series2-FX | 3-FX Series3-FX | |
| Broached pin oiling slots | |||||
| Drilled, forced wrist pin oiling | |||||
| Forged drain-back windows | |||||
| Drilled bottom ring land intersecting oil groove drain-backs | |||||
| Slightly larger, deeper valve reliefs than OEM | |||||
| CNC machined valve reliefs for moderate performance heads and cam combinations | |||||
| Larger, deeper CNC valve reliefs for more aggressive cylinder head and cam combinations | |||||
| Premium Aircraft spec. 4032 low expansion alloy | |||||
| Premium Aircraft spec. 2618 alloy | |||||
| Blower, Turbo, NOS ready | |||||
| Brushed piston crown | |||||
| Additional CNC milling for weight reduction | |||||
| Patented "X Groove" skirt for superior cylinder and ring life | |||||
| Thinner/shallower ring grooves for max ring seal | |||||
| Low volume contact reduction grooves | |||||
| 2nd ring land accumulator groove prevents flutter | |||||
| 3rd ring land scraper relief | |||||
| Oil ring groove relief reservoir | |||||
| Inner and outer pin boss weight reduction | |||||
| Tighter crown thickness control for lighter parts | |||||
| Dynamic skirt milling for consistent weight | |||||
| Diamond-turned high strength skirts | |||||
| High-strength piston pins | |||||
| Extreme Duty XR wrist pins | |||||
| Horizontal Gas Ports enhance ring seal | |||||
| Forged and machined in the USA | |||||