Carrying gear on a motorcycle or ATV is a constant trade-off: how much cargo do you need, and how do you want to mount it? These two rear-storage options come at it from opposite ends. The ARMORIAN Waterproof Motorcycle Tail Bag is a compact, waterproof rear-seat/rack bag for motorcycles. The TCMT Rear Seat Rack Cargo Storage Pack Trunk is a much larger ATV-oriented cargo box. The right choice depends on your vehicle, your cargo volume, and how much fitting work you want to take on.
Quick verdict
If your priority is a compact motorcycle tail bag with a lower price, the ARMORIAN 18L is the pick at USD 92.00. If you need a much larger ATV cargo trunk and are prepared for a drilling install, the TCMT 82L is the pick at USD 249.99.
Side-by-side comparison
| Feature | ARMORIAN 18L Tail Bag | TCMT 82L Rear Trunk |
| Listed price | USD 92.00 | USD 249.99 |
| Price bar | | |
| Brand | ARMORIAN | TCMT |
| Capacity | 18 Liters | 82L |
| Color | Black | Black |
| Condition | New other (see details) | New |
The table shows the big differences at a glance: the ARMORIAN costs less but offers far less cargo space, while the TCMT costs more and is built for much larger loads. Both share a black finish and each has its own brand name, but they are not competing on the same scale.
Where each product wins
- ARMORIAN 18L Waterproof Motorcycle Tail Bag wins for riders who want a compact, waterproof rear bag with a buckle-and-zipper closure and don't need the highest possible cargo volume. It's a motorcycle-oriented tail bag, not an ATV trunk.
- TCMT Rear Seat Rack Cargo Storage Pack Trunk wins when you need a large ATV cargo box with universal fit and LLDPE construction. It also brings a 1-year manufacturer warranty.
Product notes
ARMORIAN Waterproof Motorcycle Tail Bag
This ARMORIAN bag keeps the compact tail-bag idea simple: a black cargo pouch with a buckle-and-zipper closure and a waterproof claim in the product name. It's described as an aftermarket rear-seat rack trunk for motorcycle travel, so it's aimed at riders who want to carry a modest amount of gear without adding a huge box to the bike. The item is listed as new-other/open box, which is the trade-off for the lower price. If you're comfortable with a non-sealed unit and want a compact, waterproof option for motorcycle rides, this bag gives you that at a smaller cost. The main limitation is the open-box condition, so expect the packaging and presentation of an open-box item rather than a factory-sealed purchase.
TCMT Rear Seat Rack Cargo Storage Pack Trunk
This TCMT trunk is the big-cargo side of the pair. It's listed as a universal-fit ATV rear seat rack cargo pack, finished in black LLDPE, with a 1-year manufacturer warranty. If you ride an ATV and need serious rear storage for tours, tools, or passenger luggage, this is the option designed for that role. The catch is installation: the note explicitly says holes need to be drilled for install, so it's not a simple strap-on-and-go item. That fitting work makes it a bigger commitment. In return, you get a trunk with a material designed for cargo use and a warranty that adds a little more peace of mind on the ATV side.
Final choice by use case
Choose the ARMORIAN Waterproof Motorcycle Tail Bag if you ride a motorcycle and want a compact rear bag for everyday gear. Choose the TCMT Rear Seat Rack Cargo Storage Pack Trunk if you own an ATV and need a large rear cargo box that mounts to the rear seat rack. Both are rear-storage solutions, but they serve different vehicles and different cargo expectations.
