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.

[BradyMarie]

I know this all too well, modifying motorcycle exhausts is basically illegal in our country. The traffic authorities prohibit any alteration to the factory exhaust system parameters. I've personally seen several riders get fined 500 yuan for installing straight pipes and having to restore the original setup on the spot. The biggest headache is the excessive noise from modifications - tests show they typically exceed 80 decibels. A single throttle blip at night can wake up half the apartment building. If you really want that exhaust note, I'd suggest saving up for OEM performance exhaust systems - at least they have 3C certification and won't get you in trouble during inspections. By the way, annual inspections are particularly strict with exhausts now - fail both emissions and noise tests and you won't pass.

[VanAmir]

Just the other day when I accompanied my friend to get his car repaired, the mechanic mentioned that nine out of ten modified motorcycles caught by authorities are flagged due to their exhaust pipes. The law clearly states that exhaust modifications fall under illegal modifications, primarily because they disrupt the muffler structure, causing vehicle noise levels to double. Tests show that modified exhausts can exceed legal noise limits by more than twice the standard. Moreover, exhaust modifications also affect the engine's combustion parameters, inevitably leading to failed emissions during annual inspections. Some vendors misleadingly claim that 'just changing the exhaust tip doesn’t count as modification,' but my neighbor was forced to revert his carbon fiber exhaust tip by traffic police and even received penalty points. If you must modify, it's advisable to retain the original catalytic converter, but make sure not to obscure the vehicle inspection label's position.

[AngelinaLee]

Motorcycle exhaust systems should never be tampered with casually. Last year, our riding group learned this the hard way. A friend from the traffic police department clearly stated that removing silencers or replacing stock exhaust pipes with aftermarket ones are both illegal. During one gathering, we measured with a decibel meter - bikes with straight pipes already hit 85 dB at idle, easily exceeding 100 dB when accelerating. Nowadays, urban no-honking zones even monitor exhaust noise levels. The harshest penalty I've seen involved vehicle impoundment, a 2,000 yuan fine, plus mandatory scrapping of modified parts. For those seeking better sound, consider legal exhaust brands like Scorpion with E-mark certification - just remember to get invoices from shops as proof.