Heavy duty double slipper mechanical suspension systems (HDSS) are available in single or multiple axle configurations with a 49" axle spacing. The adjustable track arms can be modified during axle installation to provide the ideal alignment for your trailer, boosting your tire life. Dexter's heavy-duty equalizer bushings are purposefully oversized to last longer, lowering your maintenance time and cost. Dexter's hangers and equalizers are built from lightweight, high-yield steel and give you the support you need for the rough road ahead.