This is a set of optional RPM Front Bumper Mounts, and are intended for use with the Traxxas Summit. RPM 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 have been widened (the front more so than the rear) to allow more room for flex. The center connecting rib is also curved to allow the bulkhead mounting points the ability to rotate at the mounting screws, allowing more impact absorption and less energy transfer. Made from RPM's custom-blended nylon with the perfect blend of rigidity, flexibility, durability, and memory, and backed with RPM's limited lifetime warranty against breakage!