Electric Bike Bags: Five Rear Rack Bags Compared by Capacity and Material
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A rear rack bag gives an electric bike a place to carry a laptop, a lunch or a set of tools without a basket. The bags in this group range from a small 7-liter bag to a 20-liter one, and they differ in shell material, closure and whether a rain cover is included. Capacity is the first number to check, because it decides what fits. This guide reads five listings by the capacity, material, closure and weight each one states.
Quick answer
Choose the capacity by what you carry. The bags here range from 7 liters to 20 liters, with several listed at 9 to 13 liters. Then choose the shell. Hard EVA and PU shells keep their shape and protect contents, while soft polyester and PVC bags are lighter and fold flatter. Check the rack width too, since a bag is only as useful as its fit on your rack.
How we chose
Each entry uses the product details saved for the listing: capacity, size, material, closure type, color, item weight and included components. The guide reports these as the listing states them. It does not describe how any bag holds up in rain or on a rough road, how well it stays on a rack, or how it wears over time.
What we could not verify
Water resistance is not tested here. Several listings describe their fabric as waterproof or water-resistant, and those words are the seller’s. One listing gives its size in centimeters, and another in inches, so the dimensions are not always in the same units. Where a field is missing, the guide leaves it out. Rack compatibility is not confirmed for any bag.
The five listings
JXFUKAL: 9.5 liter hard shell, EVA and PU, black, with rain cover
The first JXFUKAL bag is a 9.5-liter hard shell in black, made of EVA and PU. It has a zipper closure, weighs 0.89 kilograms and includes a rain cover. The listing is one of several sizes sold under the same name, and the 9.5-liter version is the smallest of the three in its family. A hard shell keeps its shape on the rack and protects a laptop or tools from knocks. View the JXFUKAL 9.5 liter bag on Amazon.
JXFUKAL: 13 liter, polyester and PU, black
The second JXFUKAL bag is a 13-liter version in black, made of polyester and PU. It weighs 0.57 kilograms, lighter than the hard shell, and its size is listed as 38.1 by 18.5 by 18 centimeters. The listing does not name a closure type in the fields used here. A soft bag with a PU coating is a middle choice between capacity and weight. View the JXFUKAL 13 liter bag on Amazon.
JXFUKAL: 7 to 12 liter bag with rain cover, black, zipper
The third JXFUKAL listing is a rear rack bag in several sizes, with 7, 9, 10 and 12 liters named in the title. The size is 11.81 by 6.69 by 4.72 inches, the weight is 262 grams and the closure is a zipper. The listing is the lightest of the three JXFUKAL bags, which suits a bag you carry on and off the bike. The title’s size range means you should confirm the exact capacity on the product page. View the JXFUKAL 7 to 12 liter bag on Amazon.
KEMIMOTO: 8 liter PVC, black, zipper
The KEMIMOTO bag is an 8-liter bag in black, made of PVC oxford fabric. The size is 14.57 by 5.91 by 5.91 inches and the closure is a zipper. The listing describes the bag as water resistant. PVC is a stiffer fabric than polyester, which helps the bag keep its shape on the rack. View the KEMIMOTO bag on Amazon.
ROCKBROS: 1.6 liter front frame bag, polyester, black
The ROCKBROS item is a front frame bag, not a rear rack bag. It is a 1.6-liter pouch in black polyester, sized 8.15 by 3.74 by 5 inches, with a zipper and a weight of 150 grams. The title describes it as a phone pouch for the frame, and it is included here because it is often bought alongside a rack bag. It holds a phone and a small wallet, not a laptop. View the ROCKBROS frame bag on Amazon.
A comparison by capacity and shell
| Bag | Capacity | Shell | Closure | Weight as listed |
|---|---|---|---|---|
| JXFUKAL (hard shell) | 9.5 L | EVA and PU | Zipper | 0.89 kg |
| JXFUKAL (soft) | 13 L | Polyester and PU | Not stated | 0.57 kg |
| JXFUKAL (multi-size) | 7 to 12 L (title) | Not stated | Zipper | 262 g |
| KEMIMOTO | 8 L | PVC oxford | Zipper | Not stated |
| ROCKBROS (frame bag) | 1.6 L | Polyester | Zipper | 150 g |
The table places the rear rack bags above the frame pouch. The frame pouch is a different product, and it holds much less.
Capacity and what fits
A 7 to 9 liter bag suits a lunch, a jacket and a few tools. A 13-liter bag gives room for a laptop in a sleeve plus a charger. The ROCKBROS frame pouch holds a phone and small items only, so it is an add-on rather than a carrier.
Shell and weather
A hard EVA or PU shell keeps its shape on the rack and protects what is inside. A soft polyester bag is lighter and folds flat when empty. The KEMIMOTO PVC oxford bag sits between the two, and the listing describes it as water resistant. Check the rain cover in the JXFUKAL listing, which is included, against the other bags, which do not state one.
Checks to make before you order
Measure the rear rack width and the space above it before buying.
Confirm the capacity on the multi-size JXFUKAL listing, since the title gives a range.
Check the unit system. The JXFUKAL 13-liter listing gives centimeters, and the KEMIMOTO listing gives inches.
Which bag suits which carry
For a laptop and a charger on a daily commute, the 13-liter JXFUKAL bag gives the most room in a soft shell. For a protected box or tool case, the 9.5-liter hard shell is the choice. For a light bag you take off the bike, the multi-size JXFUKAL is the lightest rack bag here. For a phone and small items on the frame, the ROCKBROS pouch is the add-on.
Weight on the rack
The three JXFUKAL listings differ in weight. The hard-shell 9.5-liter bag weighs 0.89 kilograms, the 13-liter soft bag weighs 0.57 kilograms, and the multi-size bag weighs 262 grams. A heavier bag adds more load to the rear wheel, so compare the bag weight with what you plan to put in it. The rack itself also has a rated load, which is separate from the bag.
Frequently asked questions
Does a rear bag fit any e-bike?
Not automatically. Check the rack width, the mounting straps and the space above the rack on your own bike.
Is a rain cover included?
The JXFUKAL 9.5-liter listing includes one. The other listings do not state one in the fields used here.
Can I carry a laptop in a rear bag?
Yes, the 13-liter JXFUKAL bag is sized for a laptop in a sleeve, but check the size of your laptop against the listed dimensions.
Sources
Bag capacities, materials and weights are taken from the listings. Water resistance claims are the sellers’ statements.
- Amazon, where each listing is read as the seller states it
- OEKO-TEX, the textile testing and certification organization
- U.S. Consumer Product Safety Commission
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