Is it illegal to modify motorcycle exhaust?

[Allison]

Modifying a motorcycle's exhaust system is considered illegal modification. However, it's important to note: 1. Registration after modification: You must apply for modification registration at the local vehicle management office where the motorcycle is registered to avoid it being classified as illegal modification. 2. Consequences of not registering: If the motorcycle's engine type or exhaust pipe is modified without registration, you will be ordered to restore it to its original condition and may face a warning or fine. According to Article 16 of the Road Traffic Safety Law of the People's Republic of China, no unit or individual may engage in the following activities: 1. Modifying the vehicle structure: Assembling a motor vehicle or altering the registered structure, construction, or characteristics of a motor vehicle without authorization. 2. Changing the model, etc.: Changing the model, engine number, frame number, or vehicle identification number of a motor vehicle. 3. Forging marks: Forging, altering, or using forged or altered motor vehicle registration certificates, license plates, driving licenses, inspection qualification marks, or insurance marks. 4. Using others' motor vehicle documents: Using another motor vehicle's registration certificate, license plate, driving license, inspection qualification mark, or insurance mark.