What is the box behind a motorcycle called?

[AllieLynn]

The box behind a motorcycle is called a trunk. Here are specific details about motorcycle trunks: Installation: Regardless of the motorcycle's positioning, most motorcycles will have a trunk installed at the rear. When purchasing a motorcycle, the seller will usually indicate whether the bike comes with a trunk. Therefore, it is rare to find a motorcycle without a trunk nowadays. However, installing an aftermarket trunk is considered an illegal modification, as the government does not approve of adding trunks to motorcycles. Penalty Points: Installing an aftermarket trunk violates relevant regulations and can be considered an illegal modification. Not all motorcycles with trunks are illegal; if the motorcycle's registration certificate states that it came with a trunk from the factory, it is considered legal. However, during traffic police inspections, there is a possibility that the trunk may be considered a post-purchase installation.

[CoraMarie]

I've been traveling around on my motorcycle for many years, and that box is called a top case or top box, which is the large box mounted on the rear seat of the motorcycle. It's incredibly useful for long-distance trips, as it can hold helmets, raincoats, snacks, and more, making it super convenient. When choosing a box, pay attention to the material—plastic ones are lightweight but prone to damage, while metal ones are more impact-resistant. I once bought a quick-release model that could be easily detached when loaded, offering more flexibility during travel. Security is also important; always add a lock to prevent curious people from opening it. Also, don't go for one that's too big during installation, as it can affect the bike's balance and make it wobble at high speeds. In short, this top case is an essential for riding—it makes trips much more worry-free.

[McHaven]

I ride my motorcycle for commuting every day, and that box is the rear trunk, also known as the tail box. It's mainly used to store daily necessities, like document bags or lunch bags. In the morning rush, I can quickly stuff things inside without any hassle. I think it's not only practical but also serves as a crash buffer—it can reduce impact in case of a rear-end collision. In terms of material, plastic ones are cheaper and easier to clean, while metal ones are more durable but heavier. Installation is simple; there are DIY tutorials online, and you can easily mount a lockable box yourself. Just remember to regularly check if the screws are loose—don’t regret it after the box breaks. All in all, the rear trunk turns a small motorcycle into a mobile mini-warehouse, speeding up daily routines.

[OliviaLee]

I've been into modified motorcycles for quite a while, and that box installed at the back is called a rear case or tail box, which is used to increase storage space. Personally, I prefer DIY installation, choosing an aluminum alloy case for its lightweight and durability. Last time, I installed a model with a bracket—simple to fix and stable while riding, plus it allows position adjustment. In terms of usage, it's convenient for storing tools or a backpack, but avoid overloading to prevent affecting handling. After installation, it's recommended to add a waterproof cover to keep things dry on rainy days. Choose a size that matches your motorcycle model—larger bikes with bigger cases and smaller bikes with more compact ones. In short, this box saves the hassle of carrying a bag and adds fun to modifications, but remember to buy from reputable brands to ensure safety.

[VonHeidi]

As a motorcycle beginner just starting to ride, the box everyone talks about is called a top case or rear case - it's the storage box mounted on the rear seat. For new riders, it can hold helmets and gloves, preventing dropped items when carrying them. Material-wise, plastic entry-level models are recommended as they're lightweight and beginner-friendly. Installation isn't difficult either - usually comes with brackets and screws for self-tightening. Focus on anti-theft measures by adding a combination lock to prevent strangers from opening it. Very practical for long-distance rides, but avoid overpacking to maintain balance. Not expensive - a medium size suffices for daily use. In short, a top case makes riding more comfortable and worry-free.

[Serena]

I used to ride a motorcycle for mountain adventures, and the box installed at the rear is called a top case or tail case—essentially a storage container fixed behind the seat. It’s incredibly useful during trips for storing water and emergency food supplies, and it can even serve as a resting platform. I prefer the quick-release type for easy access and loading on the go. Choosing a moderately sized case is key to avoid affecting cornering, as larger boxes can significantly reduce the bike’s stability. For added safety, consider attaching reflective strips to enhance visibility at night. Compared to side cases, tail cases are more common for daily use, but material choice impacts durability: plastic is cheaper but prone to aging, while alloy is sturdier but harder to repair. Overall, this case enhances riding flexibility and is worth trying out.