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This may increase the probability of failure and may be a danger to the rider and other road users. Modifications to a motorcycle frame or suspension may load vital components well beyond the limits for which they were originally designed. The alterations must not affect the safe handling of the motor cycle or endanger either the rider or any other road user.Modified pre-ADR vehicles must continue to comply with the Transport Operations (Road Use Management-Vehicle Standards and Safety) Regulation 2021.Modified motorcycles must continue to comply with the ADRs to which they were originally constructed.There are some general rules that apply to motorcycles modifications:
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You can engage the services of an Approved Person Engineer to provide professional advice. If you do not know the standards and ADRs that apply for your motorcycle, you should consider seeking professional help to design the modifications. (The date of manufacture is usually located on the identification plate affixed to the motorcycle.) The standards for motorcycles, mopeds and motor trikes can vary depending on the Australian Design Rule (ADR) category and the date of manufacture of your bike. Reference to motorcycles on this page may include mopeds and motor trikes.
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This is a guide to keeping your motorcycle in a safe and legal condition. These standards cover the design, construction and legal modifications. The motorcycle standards are set to ensure your bike is safe to ride.
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