This is an optional Exotek TLR 22 Carbon Fiber Adjustable Wheelie Bar Set, an extra long adjustable carbon fiber wheelie bar for the 22 3.0 - 22 5.0 series of TLR cars. The longer bar allows for more stability and for straighter and faster passes without needing to let off the throttle as often. Finely adjust the wheel height via the 4mm turnbuckle or make large adjustments by adding spacers under the wheel (M3 spacers not included). This kit is made of heavy duty 3mm carbon fiber with alloy turnbuckles and mounts and includes a ball raced machined alloy wheel with over-sized rubber o-ring tire.