Photo Credit: ZAIHAN MOHAMED YUSOF
In a landmark ruling that’s reverberated through the motorcycling and workshop communities, a 48-year-old Singaporean workshop owner has become the first person in the country to be jailed for illegally modifying motorcycle exhaust systems.
This case, involving unapproved Dr Jekill and Mr Hyde aftermarket exhausts is not only a legal milestone but also a wake-up call for both riders and workshops about the importance of adhering to Land Transport Authority (LTA) regulations.
To better understand the implications of this ruling, ROADS.sg reached out to the Singapore Motor Cycle Trade Association (SMCTA) for their perspectives.
What Happened
Tang Yong Shun, the owner of a local motorcycle workshop, had applied to the LTA in March 2020 to become the official distributor of Dr Jekill and Mr Hyde aftermarket exhausts.
However, while the application was still being processed, Tang went ahead and installed unapproved exhausts on at least three motorcycles between 2020 and 2022.
Each exhaust system required a Vehicle Accessory Approval Code (VAAC) to ensure it met international standards and local emission/noise limits.
Tang bypassed this critical step, misleading customers into believing their modifications were road legal. He collected between S$3,700 to S$4,300 per exhaust installation, despite not having the required approvals at the time.
Eventually, all three motorcycles were flagged by LTA enforcement officers during routine checks on roads including the Bukit Timah Expressway and Cuscaden Road.
Tang was sentenced to six days’ jail and fined S$11,000, the first case in Singapore where jail time was imposed for such offences.
Compliance Is Key
This sentencing has brought regulatory compliance sharply into the spotlight. According to SMCTA, “compliance with regulations is important in general,” and ethical practices should be the baseline for any workshop.
While SMCTA was not able to comment specifically on the challenges faced in applying for VAAC codes, given the variation in modification types, they stressed that workshop owners should consult LTA directly for guidance on application procedures and requirements.
SMCTA remains committed to supporting their members in compliance matters.
A Shared Responsibility between Riders and Workshops
For riders keen on personalising or enhancing their motorcycles, the temptation to seek quick installs can be strong, but the responsibility to ensure modifications are legal is a shared one.
SMCTA emphasised that motorcyclists should refer to LTA’s official guidelines on what is and isn’t allowed.
These guidelines clearly classify modifications into three categories: those that do not require approval, those that do, and those that are outright prohibited.
Riders are encouraged to use the LTA OneMotoring resource:
👉 LTA Modification Guidelines
Exhaust systems, in particular, often fall into the category requiring LTA approval.
Without it, even a well-installed system can result in enforcement action, including vehicle impoundment and financial penalties.
Workshops also play a vital role. Responsible businesses should advise customers properly, reject illegal modification requests, and offer legal alternatives.
SMCTA highlighted that ethical workshops should be well-versed in regulations and reinforce best practices for both safety and legality.
Conclusion
This landmark case has sent a clear signal. Illegal modifications are not minor infractions, and the authorities are prepared to take strong action.
It also highlights the need for better education and accountability among both riders and workshop operators.
For those in the motorcycle community, the takeaway is simple: Stay informed. Stay legal. Stay safe.
By working together, from trade associations to individual riders, Singapore’s roads can continue to be a safe and regulated space for all.
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