The RPM rear bumper mount is a beefy alternative to the small beam supports offered with stock parts. Our replacement is built more like a massive skid plate with tons of durability and flexibility to help absorb rear impacts and heavy rear-end-first collisions. Each RPM rear bumper mount is designed from our ultra-tough blend of engineering grade nylons for protection you can trust. Additionally, our rear bumper mount comes with four small attachment points for our low visibility wheelie bars (RPM #81582 – sold separately)! if you're tired of dragging or destroying your rear bumper, the combination of our rear bumper mount and low visibility wheelie bars will solve those issues permanently! Tech notes: Replaces stock Traxxas #7734 rear bumper support.