The 4Gear Ultra-G rolling chassis produced by AutoWorld is a reproduction of the original Aurora Magnatraction chassis. The difference is that it has tabs. Some of the parts will fit the original Aurora AF/X chassis as well. The rear wheels are wide for improved handling around those curves. Included are medium front tires and wide pickup shoes as well. The unique feature of this chassis is the neodynium traction magnets located on the underside of the chassis. This allows the chassis to handle better due to the downforce achieved.

NOTE!!! One guide pin is included for each chassis purchased. These can also be purchased separately.