Do you need to replace the plastic bumper on your V-Dock? V-Dock has replacement dock parts and accessories for those who need them. The V-Dock Plastic Replacement Bumper is a 36-inch bumper pad that can mount to both stationary and movable bumper brackets. It measures 4 1/2 inches wide and 2 1/8 inches thick and can offer your V-Dock the protection it needs once you have it in place. You should always replace a plastic bumper on your V-Dock when necessary.