Wheelie bar, assembled (fits all Maxx trucks) The Maxx wheelie bar has 4 snap-in adjustment positions that allow you to choose how extreme you want your action to be. The unique patent-pending design allows it to be easily removed in situations where you may not want the additional control Use Traxxas stock and hop-up replacement parts to get the most out of your Traxxas RTR vehicles. This product is made from high quality materials and designed for long-lasting performance. This is replacement hardware for use on Traxxas vehicles; consult your user's manual for exact parts listings.