Does adding a tail box to a motorcycle count as modification?
2 Answers
Adding a rear trunk to a motorcycle without applying for modification registration is considered illegal modification. Here is a partial introduction to vehicle modifications: Relevant regulations include changing the body color; replacing the engine; replacing the body or frame; replacing the entire vehicle due to quality issues; changing the use nature from commercial to non-commercial or vice versa; the vehicle owner must apply for modification registration at the local vehicle management office. Legal basis: According to the law, no unit or individual may assemble a motor vehicle or alter the registered structure, construction, or characteristics of a motor vehicle without authorization.
I believe adding a top case is definitely a modification, but it falls under the category of mild and practical customization. When motorcycles leave the factory, their rear structure is fixed. Installing a top case requires specialized mounting brackets and fixtures, which essentially alters the vehicle's frame. I've seen people even modify the position of the rear seat handrails to accommodate larger top cases. Although this type of modification isn't a major overhaul, it does change the bike's appearance and weight distribution. However, most vehicle management offices are quite lenient with such modifications—as long as the top case doesn't obstruct the license plate and the brackets are securely installed, it generally passes annual inspections. It's advisable to check the vehicle registration photo; if the bike originally came with a top case, it needs to be documented. Also, pay attention to weight balance during daily rides—I once had a close call while carrying a full load of fishing gear on mountain roads.
