DSS Racing FX Series +9cc Dome Top Forged Piston Set
Fits Most Chrysler / Dodge / Jeep / Ram 5.7L Hemi Models
1-6728-3927 / 2-6728-3927 / 3-6728-3927 / K1-6728-3927 / K2-6728-3927 / K3-6728-3927
Overview:
The DSS Racing FX Series +9cc Dome Top Forged Piston Set is engineered specifically for Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 5.7L Hemi engine. Designed to enhance engine performance and durability, these pistons are an ideal upgrade for enthusiasts seeking improved compression and combustion efficiency. Whether you're rebuilding your engine or upgrading for higher power output, this piston set offers a reliable foundation for performance builds.
Featuring a +9cc dome top design, these pistons increase the compression ratio, helping to optimize power delivery and throttle response. They are compatible with the 347 Small Block Mopar Hemi Gen III platform and built to exacting standards to ensure a precise fit and long-lasting performance.
Key Features:
These forged pistons incorporate advanced design elements and high-quality materials to meet the demands of high-performance applications:
- +9cc dome top for increased compression and improved combustion efficiency
- Comp height of 1.21 inches for optimal piston-to-head clearance
- .945-inch pin diameter compatible with full-floating or press-fit configurations
- Ring groove dimensions of 1.2mm/1.2mm/3mm for reliable ring sealing and durability
- Designed for a 3.578-inch stroke and 6.243-inch connecting rod length
- Approximate compression ratios vary by combustion chamber volume: 65cc–12.12, 74cc–10.75, 85cc–9.47
- Forged construction for superior strength and resistance to high stress
- Precision machining ensures consistent performance and fitment
Construction & Design:
Manufactured from high-grade forged aluminum alloy, these pistons deliver exceptional strength-to-weight ratio, allowing them to withstand the rigors of high-performance and forced induction applications. The dome top design not only increases compression but also promotes efficient air-fuel mixture combustion, contributing to improved power and throttle response.
The pistons are CNC-machined to tight tolerances, ensuring precise ring groove dimensions and pin bore alignment. This attention to detail reduces friction and wear, enhancing engine longevity. The option for full-floating or press-fit wrist pins provides flexibility depending on your engine build preferences.
Installation & Fitment:
This piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines, specifically the 347 Small Block Mopar Hemi Gen III platform. Installation requires standard engine rebuild procedures, including proper ring end gap setting and piston orientation. Due to the +9cc dome volume, it is important to verify piston-to-valve clearance and combustion chamber volume to achieve the desired compression ratio and avoid interference.
Professional installation is recommended to ensure optimal performance and reliability. These pistons are compatible with stock and aftermarket components designed for the 5.7L Hemi engine.
What's Included:
- Set of forged +9cc dome top pistons (quantity as per SKU)
- Wrist pins (full-floating or press-fit depending on configuration)
- Ring grooves machined to specified dimensions
- Installation guidelines and specifications
Ideal For:
This piston set is ideal for performance enthusiasts, engine builders, and professional shops looking to upgrade or rebuild Chrysler, Dodge, Jeep, or Ram 5.7L Hemi engines. It suits applications ranging from street performance to moderate racing builds where increased compression and durability are desired. These pistons provide a solid foundation for enhancing power output while maintaining engine reliability.
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 +9cc Dome Top Forged Piston Set: Fits Chrysler / Dodge / Jeep / Ram 5.7L Hemi
- Unit price
- /per
What does the Available to Promise date mean?
ETA stands for Estimated Time of Arrival. The date shown is calculated using our Available-to-Promise (ATP) system, which tracks real-time supplier commitments to determine when a product is expected to be available for delivery. Specifically, the date is calculated by adding 9 business days from the date a supplier has committed to ship the product, representing a worst-case scenario for when we can expect to receive inventory.
Please note: The ETA is an estimate, not a guarantee. While we work closely with our suppliers to keep dates as accurate as possible, delays due to shipping carriers, weather, customs, or supplier-side issues may occasionally push the actual arrival beyond the date shown. Likewise, inventory may arrive sooner than the ETA in many cases. If you would like to be notified for when this item arrives, sign up for our back in stock notifications!
1-6728-3927 DSS Racing 05-23 Chrysler / Dodge / Jeep / Ram 5.7L Hemi FX Series +9cc Dome Top Forged Piston Set. Engineered for high performance, these forged pistons offer a +9cc dome top design to optimize compression ratios and power output. Featuring a compact 1.21" compression height and durable full-floating or press-fit pins, they ensure reliability under extreme conditions. Ideal for 347 Small Block Mopar Hemi Gen III builds, this set enhances combustion efficiency and engine longevity, making it perfect for enthusiasts seeking robust upgrades.
FREE GROUND SHIPPING
MADE IN THE USA
Adding product to your cart
DSS Racing FX Series +9cc Dome Top Forged Piston Set
Fits Most Chrysler / Dodge / Jeep / Ram 5.7L Hemi Models
1-6728-3927 / 2-6728-3927 / 3-6728-3927 / K1-6728-3927 / K2-6728-3927 / K3-6728-3927
Overview:
The DSS Racing FX Series +9cc Dome Top Forged Piston Set is engineered specifically for Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 5.7L Hemi engine. Designed to enhance engine performance and durability, these pistons are an ideal upgrade for enthusiasts seeking improved compression and combustion efficiency. Whether you're rebuilding your engine or upgrading for higher power output, this piston set offers a reliable foundation for performance builds.
Featuring a +9cc dome top design, these pistons increase the compression ratio, helping to optimize power delivery and throttle response. They are compatible with the 347 Small Block Mopar Hemi Gen III platform and built to exacting standards to ensure a precise fit and long-lasting performance.
Key Features:
These forged pistons incorporate advanced design elements and high-quality materials to meet the demands of high-performance applications:
- +9cc dome top for increased compression and improved combustion efficiency
- Comp height of 1.21 inches for optimal piston-to-head clearance
- .945-inch pin diameter compatible with full-floating or press-fit configurations
- Ring groove dimensions of 1.2mm/1.2mm/3mm for reliable ring sealing and durability
- Designed for a 3.578-inch stroke and 6.243-inch connecting rod length
- Approximate compression ratios vary by combustion chamber volume: 65cc–12.12, 74cc–10.75, 85cc–9.47
- Forged construction for superior strength and resistance to high stress
- Precision machining ensures consistent performance and fitment
Construction & Design:
Manufactured from high-grade forged aluminum alloy, these pistons deliver exceptional strength-to-weight ratio, allowing them to withstand the rigors of high-performance and forced induction applications. The dome top design not only increases compression but also promotes efficient air-fuel mixture combustion, contributing to improved power and throttle response.
The pistons are CNC-machined to tight tolerances, ensuring precise ring groove dimensions and pin bore alignment. This attention to detail reduces friction and wear, enhancing engine longevity. The option for full-floating or press-fit wrist pins provides flexibility depending on your engine build preferences.
Installation & Fitment:
This piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines, specifically the 347 Small Block Mopar Hemi Gen III platform. Installation requires standard engine rebuild procedures, including proper ring end gap setting and piston orientation. Due to the +9cc dome volume, it is important to verify piston-to-valve clearance and combustion chamber volume to achieve the desired compression ratio and avoid interference.
Professional installation is recommended to ensure optimal performance and reliability. These pistons are compatible with stock and aftermarket components designed for the 5.7L Hemi engine.
What's Included:
- Set of forged +9cc dome top pistons (quantity as per SKU)
- Wrist pins (full-floating or press-fit depending on configuration)
- Ring grooves machined to specified dimensions
- Installation guidelines and specifications
Ideal For:
This piston set is ideal for performance enthusiasts, engine builders, and professional shops looking to upgrade or rebuild Chrysler, Dodge, Jeep, or Ram 5.7L Hemi engines. It suits applications ranging from street performance to moderate racing builds where increased compression and durability are desired. These pistons provide a solid foundation for enhancing power output while maintaining engine reliability.
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.
-
-
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
-
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
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 | |||||