The chassis layout of the low center of gravity chassis (LCG) Slash 2WD is different than the original high center of gravity chassis (hcg), requiring a different Nerf bar design. Our Slash 2WD LCG Nerf bars fix that problem and are a direct, perfect fit! RPM Nerf bars have added structural support to help strengthen the body and reduce impact forces transferred to the chassis. The additional cross bracing optimizes rigidity while absorbing additional impact energy anything less than RPM would have Crumpled under! RPM Nerf bars are proudly made in the USA, molded in either Blue or black from our engineering grade nylons and backed with our limited Lifetime warranty against breakage. Tech notes: RPM Nerf bars are stock replacement parts, sold in pairs and work with all stock Traxxas chassis running Traxxas #5833, #5833A and #5833G Nerf bars.