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.
|Ride Heights (in.)||Notes|
|UTKNT 40K||40,000||LDA™ Large-Diameter Axle||16||Standard|
|HKANT 40K||40,000||LDA||16||Optional; Requires QUIK-DRAW®|
|AANT 23K||23,000||LDA||14, 15, 16, 17||Optional; std. travel only|
|AAT 23K*||23,000||LDA||14, 15, 16, 17||Optional; std. travel and limited rebound*|
|AAT 25K*||25,000||LDA||14, 15, 16, 17, 18, 19||Optional; std. travel and limited rebound*|
*RCA Raised-Center Axle is available on AAT23K models equipped with ZMD for both standard and limited rebound travel. Only 14" or 16" ride heights are available with limited rebound travel when spec'ing RCA.