Choosing a motorcycle tail bag is a trade-off between flexibility and simplicity. Do you want a bag that grows with your load, or one that keeps the same shape every ride? And how much are you willing to spend? These two tail bags in the powersports luggage storage towing bracket answer those questions differently, and the differences show up as soon as you look at the listings. One is built around flexible sizing, the other around a fixed shape. Both target the rear seat or rack of a motorcycle, but they ask you to commit to different riding habits.
Quick verdict
Go with the KEMIMOTO Motorcycle Tail Bag Expandable when you want a bag that can change size with your gear, and go with the ARMORIAN 18L Waterproof Motorcycle Tail Bag when you want a fixed-size bag. The listed prices are USD 53.99 and USD 92.00, respectively.
At a glance
| Product | Listed price | Price bar | Capacity | Key detail | Condition |
|---|---|---|---|---|---|
| ARMORIAN 18L Waterproof Motorcycle Tail Bag | USD 92.00 | 18 liters | Buckle and zipper closure; waterproof | New other (open box) | |
| KEMIMOTO Motorcycle Tail Bag Expandable | USD 53.99 | 24-34 liters expandable | Includes waterproof cover; reflective design | New |
Product notes
ARMORIAN 18L Waterproof Motorcycle Tail Bag
This option gives you a defined 18 liters and a waterproof build with both buckle and zipper closures. The closure setup means you have two ways to secure the opening, which is useful when you're carrying smaller items that could slip out. The listing marks it as new other and notes an open box in excellent condition, so you're getting a pre-opened unit rather than sealed packaging. It also lists an item weight of 3.97 lbs, which gives you a rough idea of how substantial the bag is before you mount it on a rear seat or rack. If you like knowing exactly how much space you have, the fixed 18-liter size is a clear advantage: you can pair it with your regular riding gear without guessing. Choose it for commutes or short tours where your load stays predictable. The limitation is the open-box condition, and the fixed size means you can't stretch it for a helmet or a bulkier item. You'll need to accept that the listed condition isn't new sealed, and the capacity won't change when your needs change.
KEMIMOTO Motorcycle Tail Bag Expandable Motorbike Helmet Bag Luggage Storage
The KEMIMOTO brings a 24-34 liter expandable capacity, so it can run compact for short rides and open up when you need to carry a helmet or extra layers. That range is the biggest practical difference between this bag and the ARMORIAN. It comes with a waterproof cover and a safety reflective design, and the listing says it's new. The compatible machine types include dual sport motorcycles, off-road motorcycles, scooters, and street motorcycles, and the listed year range spans 2000 through 2026, which makes it a candidate for a wide variety of bikes. If you frequently switch between a light load and a full weekend kit, the expandable design lets you keep the bag small when you don't need the space and open it when you do. Choose it for trips where packing volume varies, or if you want a single bag to serve multiple motorcycle styles. The limitation is that the waterproof protection depends on the separate cover being put on, since the bag body itself isn't described as waterproof. You'll also need to plan around the larger size when the bag is fully expanded.
Final choice by use case
- For trips where your load changes often, the KEMIMOTO gives you room when you need it without forcing you to carry extra space on shorter rides.
- For routine rides where you want the same predictable cargo space every time, the ARMORIAN keeps things simple and gives you a fixed-size bag.
