45L ABS vs 55L Aluminum Motorcycle Top Case: Which One Fits Your Ride?
VEVOR Guide
45L ABS vs 55L Aluminum Motorcycle Top Case: Which One Fits Your Ride?
Motorcycle top cases differ in more than capacity. Shell material, ingress rating, mounting compatibility, liner design, and how much luggage you carry all affect which box makes more sense for commuting or longer trips.
Quick answer
Choose the 45L ABS case if you want a lower-cost, lighter-duty storage box for one helmet and daily essentials. Choose the 55L aluminum alloy case if you want more volume, a metal shell, and the higher listed IP55 ingress rating for longer rides or more demanding use.
Side-by-side comparison
| Feature | 45L ABS | 55L Aluminum |
|---|---|---|
| Capacity | 45L | 55L |
| Shell | ABS plastic | Aluminum alloy |
| Ingress rating | IPX4 | IP55 |
| Helmet storage | One helmet + small items | One helmet + small items |
| Mounting | Multi-hole base | Multi-hole base |
| Keys | 2 | 2 |
| Backrest | Included | Included |
| Removable liner | Yes | Yes |
When 45L ABS makes more sense
- You mainly commute or take shorter rides.
- You carry one helmet plus gloves, rain gear, or compact essentials.
- You want the more affordable option.
- You do not need the higher listed ingress rating of the aluminum model.
When 55L aluminum makes more sense
- You want 10L more capacity.
- You prefer a rigid metal shell.
- You expect more exposure to dust or water and value the listed IP55 rating.
- You take longer trips or carry more riding gear.
Capacity is not the only fit check
Before ordering, confirm your rear rack shape, mounting-hole arrangement, rack load rating, and available clearance for the rider and passenger. A larger top case can change how much rear space the bike uses and how the bike feels when loaded.
Water resistance: IPX4 vs IP55
The 45L ABS case is listed at IPX4, while the 55L aluminum case is listed at IP55. These are different protection ratings and should not be interpreted as full waterproofing under every condition. Keep valuables protected when riding in severe weather.
What both models include
- Multi-hole mounting base
- Backrest
- Detachable washable leather liner
- Reflective details
- Keyed lock with two keys
- Mounting accessories
How to choose
- Decide whether 45L is enough for your regular load.
- Choose 55L if you consistently need more space.
- Check rear-rack compatibility and load rating.
- Compare IPX4 versus IP55 based on your riding conditions.
- Consider whether you prefer ABS or aluminum construction.
Compare VEVOR Motorcycle Top Cases on Dekuch
FAQ
Is the 55L case always better than the 45L case?
No. The 55L model offers more capacity and a metal shell, but the 45L model may be a better fit if you want lower cost and only need compact daily storage.
Do both cases fit every motorcycle?
No. Both use multi-hole mounting bases designed for many rear racks, but you should confirm your rack dimensions and mounting arrangement before purchase.
Are either of these cases completely waterproof?
The current listings show IPX4 for the 45L ABS model and IP55 for the 55L aluminum model. Those ratings indicate different levels of ingress protection, not unlimited waterproofing.