DSS Racing FX Series Forged Piston Set
Fits Most Chrysler / Dodge / Jeep / Ram 6.1L SRT8 Models
1-6847-4100 / 2-6847-4100 / 3-6847-4100 / K1-6847-4100 / K2-6847-4100 / K3-6847-4100
Overview:
The DSS Racing 6.1 Stroker Gen III Hemi FX Series Forged Piston Set is engineered specifically for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.1L SRT8 engine. Designed to accommodate a 4.100" bore, these pistons are ideal for enthusiasts and builders looking to enhance engine durability and power output while maintaining reliable street and track performance.
Featuring a +4cc dome top design and a comp height of 1.21", these pistons support increased compression ratios and improved combustion efficiency. Whether you are building a stroker motor or upgrading your factory components, this piston set delivers the strength and precision required for demanding Gen III Hemi builds.
Key Features:
Built with performance and reliability in mind, the DSS Racing FX Series pistons offer the following key features:
- Compatible with 4.100" bore sizes for most Chrysler / Dodge / Jeep / Ram 6.1L SRT8 engines
- Forged construction for superior strength and resistance to detonation
- +4cc dome top design to optimize compression and combustion
- Comp height of 1.21" for precise piston-to-deck clearance
- Pin diameter of .927" with options for full-floating or press-fit pins
- Ring groove dimensions of 1.2/1.2/3mm for reliable ring sealing and reduced friction
- Designed for a 3.578" stroke and 6.243" connecting rod length, ideal for stroker builds
- Available in multiple dome volumes (65cc, 74cc, 85cc) to tailor compression ratios from 9.64 to 12.12
Construction & Design:
Each piston in the DSS Racing FX Series is crafted from high-grade forged aluminum alloy, providing an excellent balance of lightweight strength and thermal conductivity. The forging process enhances grain structure, resulting in pistons that withstand the extreme pressures and temperatures of high-performance Gen III Hemi engines.
The dome top design increases combustion chamber volume, allowing for higher compression ratios without sacrificing detonation resistance. Precision machining ensures tight tolerances for optimal ring fitment and piston-to-cylinder wall clearance, contributing to improved engine efficiency and longevity.
Installation & Fitment:
These pistons are designed to fit most Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 models with a 4.100" bore. Installation requires standard engine assembly procedures, with attention to proper ring end gap and pin installation based on the selected pin type (full-floating or press-fit). Builders should verify piston-to-valve clearance and deck height compatibility when assembling stroker configurations.
What's Included:
- Set of forged pistons (quantity as required for engine configuration)
- Piston pins (full-floating or press-fit options)
- Piston rings with 1.2/1.2/3mm groove dimensions
- Installation instructions and technical specifications
Ideal For:
This piston set is ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding 6.1L SRT8 Gen III Hemi engines. It suits applications ranging from street performance to competitive motorsports where increased displacement and compression are desired without compromising durability.
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 Piston Set 4.100 Bore: Fits Chrysler / Dodge / Jeep 6.1L SRT8 (05-10)
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1-6847-4100 DSS Racing 05-10 Chrysler / Dodge / Jeep / Ram 6.1L SRT8 Forged Piston Set. DSS Racing's FX Series forged pistons deliver exceptional strength and durability for your 6.1L SRT8 engine. Featuring a 4.100 bore and +4cc dome top design, these pistons optimize compression ratios for improved power and efficiency. Precision-engineered with full-floating or press-fit pins and advanced ring grooves, they ensure reliable performance under high-stress conditions. Ideal for stroker builds, this set enhances engine longevity while maximizing horsepower and torque output.
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MADE IN THE USA
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DSS Racing FX Series Forged Piston Set
Fits Most Chrysler / Dodge / Jeep / Ram 6.1L SRT8 Models
1-6847-4100 / 2-6847-4100 / 3-6847-4100 / K1-6847-4100 / K2-6847-4100 / K3-6847-4100
Overview:
The DSS Racing 6.1 Stroker Gen III Hemi FX Series Forged Piston Set is engineered specifically for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.1L SRT8 engine. Designed to accommodate a 4.100" bore, these pistons are ideal for enthusiasts and builders looking to enhance engine durability and power output while maintaining reliable street and track performance.
Featuring a +4cc dome top design and a comp height of 1.21", these pistons support increased compression ratios and improved combustion efficiency. Whether you are building a stroker motor or upgrading your factory components, this piston set delivers the strength and precision required for demanding Gen III Hemi builds.
Key Features:
Built with performance and reliability in mind, the DSS Racing FX Series pistons offer the following key features:
- Compatible with 4.100" bore sizes for most Chrysler / Dodge / Jeep / Ram 6.1L SRT8 engines
- Forged construction for superior strength and resistance to detonation
- +4cc dome top design to optimize compression and combustion
- Comp height of 1.21" for precise piston-to-deck clearance
- Pin diameter of .927" with options for full-floating or press-fit pins
- Ring groove dimensions of 1.2/1.2/3mm for reliable ring sealing and reduced friction
- Designed for a 3.578" stroke and 6.243" connecting rod length, ideal for stroker builds
- Available in multiple dome volumes (65cc, 74cc, 85cc) to tailor compression ratios from 9.64 to 12.12
Construction & Design:
Each piston in the DSS Racing FX Series is crafted from high-grade forged aluminum alloy, providing an excellent balance of lightweight strength and thermal conductivity. The forging process enhances grain structure, resulting in pistons that withstand the extreme pressures and temperatures of high-performance Gen III Hemi engines.
The dome top design increases combustion chamber volume, allowing for higher compression ratios without sacrificing detonation resistance. Precision machining ensures tight tolerances for optimal ring fitment and piston-to-cylinder wall clearance, contributing to improved engine efficiency and longevity.
Installation & Fitment:
These pistons are designed to fit most Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 models with a 4.100" bore. Installation requires standard engine assembly procedures, with attention to proper ring end gap and pin installation based on the selected pin type (full-floating or press-fit). Builders should verify piston-to-valve clearance and deck height compatibility when assembling stroker configurations.
What's Included:
- Set of forged pistons (quantity as required for engine configuration)
- Piston pins (full-floating or press-fit options)
- Piston rings with 1.2/1.2/3mm groove dimensions
- Installation instructions and technical specifications
Ideal For:
This piston set is ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding 6.1L SRT8 Gen III Hemi engines. It suits applications ranging from street performance to competitive motorsports where increased displacement and compression are desired without compromising durability.
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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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 | |||||