Kingman Speed® GEN III HEMI OE Non-MDS Hydraulic Lifter Assembly

COMPATIBLE: (5.7L/6.1L/6.2L/6.4L)

2005 - 2023 CHRYSLER 300

2008 - 2023 DODGE CHALLENGER 

2006 - 2023 DODGE CHARGER 

2006 - 2023 DODGE DURANGO 

2005 - 2008 DODGE MAGNUM

2003 - 2027 RAM 1500

2014 - 2018 RAM 2500

2014 - 2018 RAM 3500 

2005 - 2027 JEEP GRAND CHEROKEE

A non-MDS lifter set replaces a vehicle's factory Multi-Displacement System (MDS) lifters to keep all cylinders firing constantly. These traditional hydraulic lifters are primarily used when upgrading to performance camshafts or performing an "MDS delete" to prevent the common lifter ticking, failure, and engine damage associated with the factory cylinder-deactivation system.

Constant Operation: Unlike MDS lifters, which collapse on command using oil pressure to shut down four cylinders for fuel economy, non-MDS lifters remain rigid at all times, ensuring continuous power from all eight cylinders.

Reliability: MDS lifter bodies only receive full oil pressure when the system is activated, which can leave the roller bearings starved for oil. Non-MDS lifters receive a continuous, full flow of pressurized oil to properly lubricate the moving parts.

Durability: Heavy-duty, non-MDS lifters (often called "Hellcat" lifters) feature larger, stouter roller bearings that can handle higher horsepower and aggressive camshaft loads without collapsing or seizing.