DSS Racing FX Series Forged Piston Set
Fits Most Chrysler / Dodge / Jeep / Ram 5.7L Hemi Models
1-6713-3957 / 2-6713-3957 / 3-6713-3957 / K1-6713-3957 / K2-6713-3957 / K3-6713-3957
Overview:
The DSS Racing FX Series Forged Piston Set is engineered specifically for Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 5.7L Hemi engine. Designed to replace factory pistons, this set offers enhanced strength and durability for high-performance and demanding applications. Whether you are building a street performance engine or a race-ready powerplant, these pistons provide the reliability and precision needed to handle increased power and boost levels.
Crafted for the 352 Small Block Mopar Hemi Gen III platform, the FX Series pistons feature a compact design with a 3.957" bore size and a 1.21" compression height. Their -12cc dish top design helps optimize combustion chamber volume and compression ratio, making them ideal for a variety of build goals.
Key Features:
These forged pistons incorporate advanced engineering and materials to deliver superior performance and longevity. Key features include:
- Forged construction for maximum strength and resistance to detonation
- 3.957" bore size compatible with most 5.7L Hemi engines
- 12cc dish top design to optimize compression and combustion efficiency
- 1.21" compression height tailored for Gen III Small Block Mopar Hemi
- Pin diameter of .927" with options for full-floating or press-fit configurations
- Ring groove dimensions of 1.2mm/1.2mm/3mm for reliable ring sealing
- Compatible with a 3.578" stroke and 6.243" connecting rods
- Available in multiple dish volumes to achieve approximate compression ratios ranging from 7.86 to 9.48
Construction & Design:
The DSS Racing FX Series pistons are forged from high-grade aluminum alloy, providing an excellent balance of strength, weight, and thermal conductivity. The forging process enhances grain structure and durability, allowing these pistons to withstand the high pressures and temperatures typical of boosted or high-output Hemi engines.
The pistons feature a carefully engineered dish top design with a -12cc volume to optimize combustion chamber shape and reduce the risk of detonation. Precision machining ensures tight tolerances for piston pin fitment and ring groove dimensions, contributing to improved sealing and reduced blow-by.
Installation & Fitment:
This piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines, specifically the Gen III Small Block Mopar Hemi platform. Installation requires standard engine rebuild procedures, including proper ring end gap setting and piston pin installation. The pistons accommodate either full-floating or press-fit wrist pins, depending on your build preference.
Due to the precise compression height and bore size, these pistons integrate seamlessly with stock or aftermarket connecting rods and crankshafts with a 3.578" stroke and 6.243" rod length. No major modifications are typically necessary, making them a direct upgrade for performance rebuilds.
What's Included:
- Set of forged pistons (quantity as required for engine)
- Wrist pins (full-floating or press-fit options depending on SKU)
- Ring grooves machined for 1.2/1.2/3mm piston rings (rings not included)
Ideal For:
This piston set is ideal for enthusiasts and professional builders seeking a durable, high-performance piston upgrade for the 5.7L Hemi engine. It suits naturally aspirated builds as well as forced induction applications, including turbocharged and supercharged setups. Whether upgrading for increased horsepower, improved reliability, or engine longevity, the DSS Racing FX Series pistons deliver a solid foundation for your build.
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 3.957" Bore: Fits Chrysler / Dodge / Jeep / Ram 5.7L Hemi
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1-6713-3957 / 2-6713-3957 / 3-6713-3957 / K1-6713-3957 / K2-6713-3957 / K3-6713-3957 DSS Racing 05-23 Chrysler / Dodge / Jeep / Ram 5.7L Hemi FX Series Forged Piston Set. Engineered for high performance, these forged pistons feature a 3.957" bore and a -12cc dish top for optimized combustion. Designed with full-floating or press-fit pins and precise ring grooves, they enhance durability and power output. Ideal for 5.7L Hemi Gen III engines, they offer improved compression ratios and reliable strength for street or track applications.
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DSS Racing FX Series Forged Piston Set
Fits Most Chrysler / Dodge / Jeep / Ram 5.7L Hemi Models
1-6713-3957 / 2-6713-3957 / 3-6713-3957 / K1-6713-3957 / K2-6713-3957 / K3-6713-3957
Overview:
The DSS Racing FX Series Forged Piston Set is engineered specifically for Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 5.7L Hemi engine. Designed to replace factory pistons, this set offers enhanced strength and durability for high-performance and demanding applications. Whether you are building a street performance engine or a race-ready powerplant, these pistons provide the reliability and precision needed to handle increased power and boost levels.
Crafted for the 352 Small Block Mopar Hemi Gen III platform, the FX Series pistons feature a compact design with a 3.957" bore size and a 1.21" compression height. Their -12cc dish top design helps optimize combustion chamber volume and compression ratio, making them ideal for a variety of build goals.
Key Features:
These forged pistons incorporate advanced engineering and materials to deliver superior performance and longevity. Key features include:
- Forged construction for maximum strength and resistance to detonation
- 3.957" bore size compatible with most 5.7L Hemi engines
- 12cc dish top design to optimize compression and combustion efficiency
- 1.21" compression height tailored for Gen III Small Block Mopar Hemi
- Pin diameter of .927" with options for full-floating or press-fit configurations
- Ring groove dimensions of 1.2mm/1.2mm/3mm for reliable ring sealing
- Compatible with a 3.578" stroke and 6.243" connecting rods
- Available in multiple dish volumes to achieve approximate compression ratios ranging from 7.86 to 9.48
Construction & Design:
The DSS Racing FX Series pistons are forged from high-grade aluminum alloy, providing an excellent balance of strength, weight, and thermal conductivity. The forging process enhances grain structure and durability, allowing these pistons to withstand the high pressures and temperatures typical of boosted or high-output Hemi engines.
The pistons feature a carefully engineered dish top design with a -12cc volume to optimize combustion chamber shape and reduce the risk of detonation. Precision machining ensures tight tolerances for piston pin fitment and ring groove dimensions, contributing to improved sealing and reduced blow-by.
Installation & Fitment:
This piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines, specifically the Gen III Small Block Mopar Hemi platform. Installation requires standard engine rebuild procedures, including proper ring end gap setting and piston pin installation. The pistons accommodate either full-floating or press-fit wrist pins, depending on your build preference.
Due to the precise compression height and bore size, these pistons integrate seamlessly with stock or aftermarket connecting rods and crankshafts with a 3.578" stroke and 6.243" rod length. No major modifications are typically necessary, making them a direct upgrade for performance rebuilds.
What's Included:
- Set of forged pistons (quantity as required for engine)
- Wrist pins (full-floating or press-fit options depending on SKU)
- Ring grooves machined for 1.2/1.2/3mm piston rings (rings not included)
Ideal For:
This piston set is ideal for enthusiasts and professional builders seeking a durable, high-performance piston upgrade for the 5.7L Hemi engine. It suits naturally aspirated builds as well as forced induction applications, including turbocharged and supercharged setups. Whether upgrading for increased horsepower, improved reliability, or engine longevity, the DSS Racing FX Series pistons deliver a solid foundation for your build.
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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YEARMAKEMODELSUBMODEL2011 - 2024Chrysler3005.7L Hemi2005 - 2010Chrysler300C5.7L Hemi2009 - 2023DodgeChallenger5.7L Hemi2005 - 2023DodgeCharger5.7L Hemi2005 - 2011DodgeDakota5.7L Hemi2004 - 2025DodgeDurango5.7L Hemi2005 - 2008DodgeMagnum5.7L Hemi2002 - 2010DodgeRam5.7L Hemi2005 - 2010JeepCommander5.7L Hemi2005 - 2025JeepGrand Cherokee5.7L Hemi2022 - 2024JeepWagoneer5.7L Hemi2011 - 2024Ram15005.7L Hemi2019 - 2024Ram1500 Classic5.7L Hemi2010 - 2025Ram25005.7L Hemi2011 - 2012Ram35005.7L Hemi
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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 $250. Select “Free Shipping” at checkout.
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 | |||||