What is the Legal Modification Range for Car Spoilers?

[VonArabella]

Do not alter the length and width of the vehicle. Exterior modifications: Replacement of vehicle exterior logos, colors, decals, installation of sunroofs, addition of front and rear bumpers, roof racks, rear spoilers, and upgrades to tires, rims, and chassis. Interior modifications: Modification of interior facilities, including steering wheels, replacement of sport seats, addition of instrument equipment, and sound-deadening materials. Power system upgrades: Modification of exhaust pipes, turbochargers, etc., utilizing the gap between the engine's design power and actual power to increase instantaneous displacement. Registration: If a vehicle owner wishes to change the body color, replace the engine, or alter the body or frame, they can proceed with the changes first and then submit an application for modification registration to the vehicle management office within 10 days.