e middle of the chassis frame, the main role is to enhance the overall rigidity of the chassis frame.
Depending on the vehicle originally designed, the frame structure is different, some have been omitted, some have been replaced by other structures.
Families usually do not pay attention to these types of vehicles and equipment, but the sports car, then rather more not less.
In addition, in order to enhance overall body rigidity and professional body modification (cockpit) to strengthen anti-rol