Upgrade your International 4700-4900 with high-quality crossmember and walking beam parts from our comprehensive category. Our selection caters to various rear suspension systems, including Corporate Air, IROS, and Chalmers 800. Discover durable crossmember brackets, sturdy walking beams, and sleek fiberglass rear frame covers to enhance the functionality and appearance of your medium-duty International truck. Whether you need to replace a worn-out part or customize your rig, this category has everything you need to do the job correctly.