The best motorcycle tail bag backpack depends on how much you carry, how you mount the bag, and whether you need to wear it off the bike. The KEMIMOTO is best for adjustable capacity and a dedicated rain cover; MOTOCENTRIC is best for riders who want up to 38 liters; and the reflective 1680D model suits riders who value visibility details. The HHLUPUP adds a wet-gear net, while the Grapelet offers a hard-shell construction.
| Product | Best For | Capacity |
|---|---|---|
| KEMIMOTO | Expandable storage and backpack carry | 22–34L |
| MOTOCENTRIC | Higher stated capacity with backpack use | 25–38L |
| Reflective 1680D Tail Bag | Reflective details and two-way access | Expandable; exact liters not listed |
| HHLUPUP White Tail Bag | Wet-gear storage and multi-way carry | Up to 38L |
| Grapelet ABS Hard Shell | Hard-shell construction | 24–35L |
KEMIMOTO Expandable Motorcycle Tail Bag
Best for: Riders who want a bag that can switch between motorcycle-mounted storage and backpack carry. Its 22–34-liter capacity expands for additional gear, and the listed dimensions increase in height from 7.9 inches to 11.8 inches when expanded.
The bag is made from 1680D leather fiber and comes with a dedicated rain cover. The manufacturer lists room for items such as clothes, shoes, helmets, tablets, and meals. Six straps and a universal strap-mount design are included, and the bag can also be carried as a handbag.
Limitation: The manufacturer says models without a rear rack have limited compatibility and recommends a rack for stable use. It is not intended for dirt bikes or bicycles.
MOTOCENTRIC 25–38L Helmet Backpack
Best for: Riders who prioritize a larger stated capacity and want one bag for both tail-bag and backpack use. It expands from 25 to 38 liters, providing flexible room for a helmet, riding gear, and other essentials.
The product description identifies Oxford fabric and waterproof protection. Its dual-use design is intended to make it easier to carry the bag after removing it from the motorcycle. This combination makes it a straightforward option for riders who need flexible storage for a commute or a longer ride.
Limitation: The listed details do not specify mounting dimensions or an included rain cover. Check the mounting arrangement and included accessories before choosing it for a particular motorcycle or wet-weather needs.
Reflective 1680D Expandable Tail Bag
Best for: Riders looking for reflective straps, expandable storage, and easy access from different angles. The front reflective straps are a visibility feature, and the two-way zipper is described as allowing access from multiple directions.
Construction includes 1680D Oxford cloth, waterproof cloth, and EVA, with a rain cover included. The bag measures 16.9 by 11.8 by 6.7 inches in its standard form and 11.8 inches high when expanded. The listed weight is 1.1 kilograms. The expanded space is described as suitable for holding a helmet.
Limitation: The product details do not give a capacity in liters. Compare the listed dimensions with the gear you plan to carry instead of relying on a liter estimate.
HHLUPUP 25–38L Waterproof Tail Bag
Best for: Riders who want up to 38 liters of storage, multiple carry options, and a place to secure wet gear. The description says the bag can be used as a handbag, shoulder bag, or backpack, and it has an exterior elastic net for a wet raincoat.
Its 600D Oxford fabric is described as waterproof and tear-resistant, and an extra rain cover is included. The bag is listed as suitable for most motorcycles, dirt bikes, and enduro bikes. It can hold riding items such as clothes, gloves, drinks, and a helmet.
Limitation: The white color may not suit riders who prefer a less noticeable appearance. The product details do not provide mounting measurements, so check fit and attachment requirements before purchase.
Grapelet 24–35L ABS Hard-Shell Tail Bag
Best for: Riders who prefer a tail bag with an ABS hard-shell component and expandable luggage space. The listed construction combines ABS plastic, 1200D waterproof Oxford fabric, and PU leather. Capacity expands from 24 to 35 liters, and reinforced stress points are specified.
For wet-weather use, the bag has a sealed two-way PU-coated design and includes an extra rain cover. Its stated capacity and luggage-focused description make it a practical option for carrying general riding gear.
Limitation: The supplied features do not say that it converts into a backpack or describe backpack straps. Choose another option if carrying the bag on your back is essential.
Buying Guide: How To Choose A Motorcycle Tail Bag Backpack
How much capacity do you need?
Compare both the standard and expanded capacity when available. A 22–34-liter bag may be enough for a smaller load, while a stated maximum of 38 liters offers more room for bulky gear. Capacity alone does not confirm that a specific helmet will fit; check the bag’s dimensions and your helmet’s shape.
Will the bag fit your motorcycle?
Review how the bag attaches and whether your motorcycle has a suitable rear rack or passenger seat. The KEMIMOTO listing specifically notes limited compatibility without a rear rack. Other product details here do not give complete fit measurements, so verify the mounting method and dimensions before ordering.
Do you need backpack straps?
Look for an explicit dual-use or backpack description if you plan to carry the bag off the bike. KEMIMOTO, MOTOCENTRIC, and HHLUPUP expressly describe backpack use. The Grapelet features provided here focus on tail-bag construction and do not specify backpack conversion.
What weather protection is included?
Waterproof fabric and a rain cover are different stated protections. Some options list both, while the MOTOCENTRIC description mentions waterproof protection but does not specify a separate cover. Consider how you will protect the contents in sustained rain and whether an external cover matters to you.
Which extra details matter on daily rides?
Reflective straps may be useful to riders who want visibility details, while the HHLUPUP’s elastic net can hold a wet raincoat. Check zipper access, carry style, construction materials, and the amount of space available after expansion. Prioritize features that match your routine rather than choosing only by maximum capacity.
Frequently Asked Questions
Can a motorcycle tail bag backpack hold a helmet?
Several products in this list describe helmet storage, including the KEMIMOTO, MOTOCENTRIC, HHLUPUP, and Grapelet bags. Check the bag’s dimensions against your helmet because fit can depend on helmet shape and size.
Are these bags suitable for riding in rain?
Several list waterproof materials or protection and include a rain cover. Review the specific product details, since the type of protection differs by bag and no rain cover is specified for every option.
Can I carry every tail bag as a backpack?
No. Choose a listing that explicitly describes backpack use. The Grapelet details provided here do not specify backpack straps or conversion.
Is a rear rack required for a tail bag?
Requirements vary by motorcycle and mounting system. KEMIMOTO recommends a rear rack for stable use and notes limited compatibility on models without one. Check the selected bag’s fit details for your motorcycle.
What is the difference between expandable capacity and fixed capacity?
An expandable bag offers more storage when its expansion section is opened. Compare both the unexpanded and expanded dimensions or capacities so you can judge whether it fits your usual load and motorcycle setup.