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ZMD®
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ZERO MAINTENANCE DAMPING®

Available as a premium option on select VANTRAAX® and INTRAAX®  integrated air suspension models and standard on  ULTRAA-K® air slider systems. ZMD® technology eliminates shock absorbers from the maintenance equation by integrating the damping function traditionally performed by the shock within the air spring itself. ZMD air springs exchange pressurized air between the bellows and the piston. This patented air spring provides uniform and consistent damping over the life of the air spring.

Model System
Capacity (lbs.)
Axle
Diameter (in.)
Ride Heights (in.) Notes
ULTRAA-K®
UTKNT 40K 40,000 LDA™ Large-Diameter Axle 16 Standard
VANTRAAX®
HKANT 40K 40,000 LDA 16 Optional; Requires QUIK-DRAW®
INTRAAX®
AANT 23K 23,000 LDA 14, 15, 16, 17 Optional;  std. travel only