COMP Cams Non-MDS Lifter Kit

2003–2025 Dodge Ram 1500 / 2500 / 3500, 2004–2025 Dodge Durango, 2005–2025 Chrysler 300 / Dodge Magnum / Jeep Grand Cherokee / Jeep Commander / Dodge Charger / Dodge Challenger 5.7L, 6.1L, 6.2L, 6.4L HEMI

Part #: 856Y-16

Overview

The COMP Cams Non-MDS Lifter Kit is a premium upgrade engineered specifically for Dodge Gen III HEMI engines, including the 5.7L, 6.1L, 6.2L Hellcat, and 6.4L 392 variants. This kit disables the factory Multi-Displacement System (MDS), ensuring all eight cylinders remain fully active for consistent power delivery and enhanced engine reliability. Designed for enthusiasts who want to run performance camshafts or eliminate ticking lifter issues, these lifters provide superior durability and longevity compared to factory and Hellcat-style lifters.

Whether you are rebuilding a stock engine, upgrading for high-performance street use, or building a race-ready powerplant, the COMP Cams Non-MDS Lifter Kit offers a dependable, direct-fit solution that maintains valvetrain integrity under demanding conditions.

Key Features

COMP Cams Non-MDS lifters are crafted to meet the rigorous demands of modern HEMI engines, delivering reliability and improved wear resistance. Key features include:

• Eliminates MDS function to keep all eight cylinders active for consistent power and throttle response
• Enhanced oil retention around the axle and bearing to reduce friction and extend lifter life
• Additional material at the lifter base increases strength and stiffness in the critical roller area
• Direct drop-in replacement design for easy installation with no modifications required
• Includes four premium COMP Cams lifter yokes for precise alignment and OEM-level durability
• Compatible with Dodge 5.7L, 6.1L, 6.2L Hellcat, and 6.4L 392 HEMI engines
• Ideal upgrade over factory and Hellcat lifters for improved reliability under high-performance conditions
• Manufactured by COMP Cams, a trusted leader in performance valvetrain components

Construction & Design

These lifters are engineered with durability and performance as top priorities. The lifter bodies feature reinforced construction with extra material strategically placed at the base to enhance roller strength and stiffness, reducing the risk of bearing wear and lifter body failure common in factory units. The improved oil retention system around the axle and bearing ensures consistent lubrication, minimizing friction and wear during operation.

The included lifter yokes are manufactured from premium materials to meet or exceed OEM specifications, ensuring precise lifter alignment and smooth valvetrain operation. This meticulous design results in a robust, long-lasting component suitable for stock rebuilds, performance upgrades, and racing applications alike.

Installation & Fitment

The COMP Cams Non-MDS Lifter Kit is a direct drop-in replacement for factory lifters on Dodge Gen III HEMI engines, requiring no special modifications or machining. This makes it an accessible upgrade for professional mechanics and experienced enthusiasts alike.

This kit fits a wide range of vehicles equipped with 5.7L, 6.1L, 6.2L Hellcat, and 6.4L 392 HEMI engines, including:

• Dodge Ram 1500 (2003–2025)
• Dodge Ram 2500 (2003–2025)
• Dodge Ram 3500 (2003–2009, 2011–2025)
• Dodge Durango (2004–2025)
• Chrysler 300 (2005–2025)
• Dodge Magnum (2005–2008)
• Jeep Grand Cherokee (2005–2025)
• Dodge Charger (2006–2025)
• Jeep Commander (2006–2025)
• Dodge Challenger (2008–2025)

This kit is the recommended solution for deleting MDS on MDS-equipped HEMI engines or replacing ticking lifters to restore smooth engine operation and reliability.

What's Included

• Four COMP Cams Non-MDS lifters
• Four premium COMP Cams lifter yokes for proper alignment and durability

Ideal For

This lifter kit is perfect for Dodge, Chrysler, and Jeep enthusiasts who want to eliminate the MDS system for consistent cylinder activation and improved reliability. It is ideal for owners upgrading to performance camshafts, repairing ticking lifters, or building high-performance and racing engines. The kit provides a durable, OEM-quality solution for maintaining valvetrain integrity under demanding conditions, ensuring your HEMI engine performs reliably at all times.