Designed to fit our Slash street stocks and a Slash late model. The bumper kit was made to be adjustable. This allows the front bumper to fit any one of the Slash Street stocks as well as any of the short course late model bodies to a Traxxas Slash. The front is made in flexible Kydex material which is legal and safer than the carbon fiber front bumpers.. The rear allows for the body to be mounted with an extension to the rear  deck area.. eliminating the mounts that go thru the  windows. The mounting kit can be i used with a decked body or  with the windows left in the body. The best results with these mounting kits is easier mounting and extended body life.