Description These polyurethane cab mount bushings are much tougher than or original grade cab mount bushings. Poly mounts have much less give making them much more durable in high abuse situations giving you a much longer time before the bushings would start to soften and collapse. The downside however is that poly bushings tend to be much more rigid and they transfer more vibration, bumps, and noise to the cab body. If you’re looking for factory replacements to maintain comfort, and durability, use our factory replacement bushings. If you’re looking for HD bushings for your truck and don’t care about the harsher ride; these are your bushings!