This is an optional RPM Rear Bumper Mount in Blue
RPM customers already know their bumpers are some of the toughest in the R/C industry, but a tough bumper needs proper support. These bumper mounts are designed to absorb serious impacts while transferring minimal impact energy into the more fragile components of the truck. Both the front and rear RPM bumper mounts were widened to allow the bumper mount material more flexing room. The center connecting rib was also curved to allow the bulkhead mounting points the ability to rotate at the mounting screws, allowing more impact absorption and less energy transference. The last major design improvement over the stock parts is RPM's custom-blended nylon.