KEMIMOTO Motorcycle Tail Bag 7-14L Expandable - Waterproof Rear Seat

In this review the KEMIMOTO Motorcycle Tail Bag is evaluated for daily commuters and weekend riders who need a compact but expandable luggage solution. The bottom line: this rear seat bag works best for street and sport motorcycles that require a secure, weatherproof pack that can grow from a slim 7L to a usable 14L when needed. The reviewer found the bag easy to install, durable in wet conditions thanks to the included rain cover, and versatile enough to carry a helmet, jacket, or everyday essentials without being obtrusive.

Key Features

• Expandable Capacity: The bag expands from a compact 11.4 in x 9.4 in x 4.1 in to a larger 14.6 in x 12.2 in x 7.5 in, offering flexible storage for short trips or daily carry.
• Universal Dual Use: With supplied mounting straps and a shoulder strap the bag converts from a motorcycle tail bag to a handheld or shoulder bag for off-bike convenience.
• Waterproof Protection: Constructed from Oxford fabric with a carbon fiber look and a dedicated rain cover, the bag keeps gear dry during wet commutes and light touring.
• Practical Organization: A front elastic cord secures gloves or a light jacket while an internal mesh pocket helps separate smaller items like keys or a phone.
• Secure Attachment: Six mounting straps provide a stable fit on most sport and touring motorcycles and the reflective striping adds nighttime visibility.

Who It's For

This bag is ideal for riders of street and sport motorcycles such as CB600RR, iron883, MT10, FZ07/09, and R1200GS who want a small, expandable luggage option that stays secure on the tail or passenger seat. Commuters who need a weatherproof pack that doubles as a shoulder bag will appreciate the quick conversion and compact storage when not expanded.

Riders of dirt bikes or bicycles should look elsewhere because the bag is not designed for those frames. Also those needing large, hard-shell top cases or long-distance touring luggage with rigid mounting systems may find this soft bag too limited for very heavy loads or extended multi-day tours.

Pros & Cons

Pros

• Well-made straps and heavy-duty zippers give confidence that the bag will stay attached during spirited riding.
• Expandable design provides useful extra volume when needed without creating bulk on short rides.
• Fully waterproof with a rain cover and durable Oxford fabric that resists tearing and abrasion.

Cons

• The bag is not suitable for dirt bikes or bicycle mounting, limiting its universality for off-road riders.
• While roomy for a soft tail bag, it is not a full replacement for large hard luggage on long multi-day tours.

Specifications

Brand	KEMIMOTO
Capacity	7-14L expandable
Size (Standard)	11.4 in x 9.4 in x 4.1 in
Size (Expanded)	14.6 in x 12.2 in x 7.5 in
Material	Oxford fabric with carbon fiber design
Attachment	6 straps plus 1 shoulder strap
Includes	Waterproof rain cover and internal mesh pocket

Our Verdict

The KEMIMOTO Motorcycle Tail Bag is a practical, value-oriented option for street riders who need a weatherproof, expandable tail bag that converts to a shoulder bag for off-bike use. It delivers solid build quality, useful capacity expansion, and reliable waterproofing at a price that makes it a sensible addition for everyday commuting and short trips.

Frequently Asked Questions

Will this fit my sport motorcycle?
The bag is designed to be universal for many sport and touring models; check the standard and expanded dimensions against your passenger seat or tail rack before buying.

Is the bag fully waterproof without the cover?
The Oxford fabric is water-resistant, but the included rain cover provides full waterproof protection in heavy rain.

Can it carry a helmet?
When expanded to 14L it can accommodate smaller helmets or a folded jacket, but full-size helmets may be a tight fit depending on helmet shape.