The new adjustable ULTRA Stability System (USS) option is designed for stable rectilinear movement of the wheelie machine at higher speeds. In the early stages of wheelie practicing, the motorcycle rolls over backward very often if don’t have an ULTRA Rollover Protection (URP) system on your wheelie machine. Thus strong impacts occur on the thrust plate of the wheelie trainer. With such hits, the wheelie machine can turn sharply to the right or left, which could lead to unpredictable consequences.
The new adjustable ULTRA Stability System (USS) option allows to avoid these situations and stabilizes the movement of the wheelie machine straight, which means more stability on the ground. Please note that this option can only be added at the stage of building your wheelie machine. It is impossible to add it to an already produced wheelie machine ULTRA with no USS. Please double-check that first.