2009–2023 5.7L HEMI MDS Lifter Delete Kit by MMX and Mopar for Dodge RAM
Eliminate the limitations of the factory Multi-Displacement System and improve long-term engine reliability with the 2009–2023 5.7L HEMI MDS Lifter Delete Kit by MMX and Mopar for Dodge RAM. Designed for truck owners, performance enthusiasts, and engine builders, this comprehensive kit replaces the factory MDS components with proven non-MDS valvetrain parts, creating a stronger and more dependable engine configuration. Whether you’re rebuilding a worn engine, upgrading for performance, or preventing future lifter-related failures, this kit provides a trusted solution backed by MMX and Mopar quality.
The factory MDS system was developed to improve fuel economy by deactivating selected cylinders during light-load driving conditions. While effective for efficiency, the MDS lifters and related components can become a concern in high-mileage engines or performance applications. Many HEMI owners choose to convert to a non-MDS setup to improve reliability, simplify engine operation, and create a stronger valvetrain foundation.
This lifter delete kit includes carefully selected components designed to eliminate the factory MDS system while maintaining proper engine function. The upgraded valvetrain configuration supports improved durability and compatibility with future performance upgrades such as camshaft installations, cylinder head upgrades, forced induction systems, and complete engine builds.
Manufactured using genuine Mopar and premium MMX components, this kit is engineered to meet demanding performance and durability standards. The parts are designed to provide excellent fitment and long service life, making the conversion process straightforward for professional engine builders and experienced technicians.
Whether your Dodge RAM is used for daily driving, towing, work duties, or performance applications, removing the MDS system can help create a more robust engine platform. This upgrade has become one of the most popular reliability modifications among 5.7L HEMI owners seeking long-term peace of mind.
Product Specifications
| Feature | Description |
|---|---|
| Product Name | MDS Lifter Delete Kit |
| Manufacturers | MMX and Mopar |
| Vehicle Fitment | 2009–2023 Dodge RAM |
| Engine Compatibility | 5.7L HEMI V8 |
| System Type | MDS Delete Conversion |
| Purpose | Replace Factory MDS Components |
| Component Quality | Genuine Mopar and MMX Parts |
| Performance Benefit | Improved Valvetrain Reliability |
| Application | Engine Rebuilds and Performance Upgrades |
| Compatibility | Non-MDS Engine Configurations |
| Installation Type | Internal Engine Upgrade |
| Condition | Brand New |
Frequently Asked Questions
| Question | Answer |
|---|---|
| What is the MDS system? | MDS stands for Multi-Displacement System, which deactivates selected cylinders during light-load driving to improve fuel economy. |
| Why perform an MDS delete? | Many owners choose an MDS delete to improve long-term reliability and eliminate potential lifter-related concerns. |
| Is this kit compatible with performance camshaft upgrades? | Yes. MDS delete kits are commonly installed during camshaft upgrades and engine performance builds. |
| Are genuine Mopar components included? | Yes. This kit utilizes genuine Mopar components along with premium MMX parts. |
| Can this kit be used during an engine rebuild? | Absolutely. It is a popular upgrade when rebuilding or refreshing a 5.7L HEMI engine. |
| Does this improve engine durability? | The non-MDS valvetrain configuration is often preferred for improved reliability and long-term durability. |
| Is professional installation recommended? | Yes. Internal engine modifications should be performed by qualified technicians to ensure proper assembly and operation. |
Upgrade your 5.7L HEMI with the MMX and Mopar MDS Lifter Delete Kit and enjoy a stronger valvetrain, improved reliability, premium-quality components, and a solid foundation for future performance enhancements.
Cody Mitchell –
I ordered this MDS Delete Kit for my 2019 RAM 1500, and Dodge Auto Supply handled everything perfectly. The website had clear product information, and checkout was quick. Shipping updates were accurate, and the package arrived in excellent shape. The MMX and Mopar parts were top quality, and everything fit exactly as expected. I used this kit while upgrading my cam and replacing lifters. The engine now feels smoother, and power delivery is stronger. I no longer worry about MDS-related failures, which was the main reason for the upgrade. The truck feels more reliable and much better under load. This is a smart investment for any 5.7 HEMI owner.
Brandon Keller –
I ordered the 5.7L HEMI MDS Lifter Delete Kit by MMX and Mopar from Dodge Auto Supply for my 2018 RAM 1500 after dealing with lifter noise for months. The ordering process was smooth, and the website had all the fitment details I needed. Shipping updates were consistent, and the kit arrived earlier than expected. Everything was packed securely, and all components looked factory-grade. The kit included the exact parts needed for the MDS delete, which saved me time hunting down individual pieces. My mechanic installed it along with a fresh camshaft, and the difference was huge. The engine idles smoother, runs stronger, and the annoying lifter tick is gone. Throttle response improved, and power delivery feels much more consistent. This kit gave me confidence in the long-term reliability of my truck. Definitely worth every dollar. The package contents matched what MMX lists for RAM applications.
Tyler Brooks –
My experience with Dodge Auto Supply was excellent when ordering the MMX/Mopar MDS Lifter Delete Kit for my 2016 RAM 1500. The website was easy to use, and the checkout process was simple. Shipping was fast, and the kit arrived in perfect condition. I chose this because I wanted to eliminate MDS and upgrade reliability while rebuilding my 5.7 HEMI. The quality of the components impressed me right away. Installation went smoothly, and once the truck was back together, the engine felt stronger and smoother. The truck now pulls harder through the RPM range, and idle quality improved. I also noticed more consistent oil pressure and no more strange valve train noise. This kit made my rebuild much easier, and I’m glad I trusted Dodge Auto Supply.
Owen Fletcher –
I ordered the 5.7L HEMI MDS Delete Kit for my imported RAM in Australia, and Dodge Auto Supply delivered a great experience. Ordering was simple, and the product details were accurate. Shipping was efficient, and the kit arrived in perfect condition. The MMX and Mopar quality is excellent, and the included hardware made the installation much easier. After fitting everything, the truck felt smoother, quieter, and more responsive. Power delivery feels stronger, especially under load. This upgrade is ideal if you want to improve reliability and remove MDS concerns permanently.
Mason Carter –
I bought the 5.7L HEMI MDS Delete Kit by MMX and Mopar for my 2014 Dodge RAM after my lifter failed. Dodge Auto Supply made the process easy from start to finish. The product description matched exactly what arrived, and shipping was faster than expected. The kit included everything needed, including timing components and gaskets, which made the repair more efficient. After installation, the engine felt completely different—in a good way. The rough idle disappeared, throttle response improved, and the truck feels stronger overall. I’ve put over 3,000 miles on it since the install with zero issues. From what I’ve seen online, a lot of RAM owners recommend going this route when lifter issues start showing up.
Hayden Wallace –
I purchased the MMX/Mopar 5.7L HEMI MDS Delete Kit from Dodge Auto Supply for my RAM 1500 in Canada, and I’m extremely satisfied. Shipping was smooth and fully tracked, and the kit arrived safely. The packaging was excellent, and every part was organized well. Installation took time, but everything fit correctly with no surprises. After the install, the truck felt smoother right away. The idle cleaned up, the engine felt stronger, and throttle response improved. This kit solved the lifter concerns I had and gave me peace of mind for long-term reliability. I’d definitely recommend this to anyone rebuilding a HEMI.
Zachary Rivers –
This was my first order from Dodge Auto Supply, and I’m impressed. I bought the MMX/Mopar MDS Lifter Delete Kit for my 2017 RAM 1500 after hearing early lifter tick. The ordering process was easy, and the kit arrived quickly. Everything was packed securely, and the quality was excellent. My mechanic installed it along with a tune to disable MDS, which many HEMI owners say is necessary when doing the delete. That advice lined up with what I found online too. After installation, the truck runs stronger, smoother, and the ticking is completely gone. This is one of the best reliability upgrades I’ve done.