A tank bag is the cheapest upgrade you can make to a motorcycle, and also the easiest to get wrong. Mount it wrong and it slides into your steering lock, rattles the paint off your tank, or gets in the way every time you stand on the pegs. Mount it right and it disappears until you need it, then puts a phone, wallet, gloves and a rain shell exactly where your hands can reach them at a fuel stop.
After running these ten bags through weeks of commuting, highway and dirt riding, the best motorcycle tank bags split cleanly by mount type. The SW-Motech Pro Micro 3-5L is the one we would buy first, because its strapless ring lock never touches your paint and the build quality is the best in the group. The Chase Harper USA 450 is the smarter money, with neodymium magnets and a fully rubberized base. For adventure and dual-sport riding, the TUSK Olympus 8L has the feature set most riders end up wishing they had bought first.
What follows covers all ten, grouped by how they attach, because the mounting system matters more than any other spec. If you ride a lot of gravel, read the strap section. If you own a cruiser with a big steel tank, the magnetic picks are for you. If you swap bikes often, a tank ring is the only system that transfers cleanly.
Before we get into individual bags, one thing to note. Tank bags are not the only option. If you want to understand how they compare to a handlebar bag or a tail bag, our motorcycle covers guide covers the same logic around keeping gear dry and out of sight. And if your bike is currently laid up between rides, a solid motorcycle battery guide is worth a look first.
Table of Contents
Top 3 Best Motorcycle Tank Bags for 2026
SW-Motech Pro Micro 3-5L
- Strapless ring lock
- Expands 3 to 5 litres
- Quick pull-strap release
All 10 Picks at a Glance (October 2026)
| Product | Specs | Action |
|---|---|---|
| SW-Motech Pro Micro 3-5L |
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| TUSK Olympus Tank Bag Large 8L |
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 Chase Harper USA 450 Magnetic |
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 Nelson-Rigg Trails End Adventure 16L |
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 Nelson-Rigg Route 1 Journey 7L |
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 Nelson-Rigg Hurricane 2.6L |
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 cortech Super 2.0 12L |
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 Rhinowalk Tank Bag 5-6.5L |
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Check Latest Price |
 Dracarys Magnetic Tank Bag 4L |
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Check Latest Price |
 KIWISE Magnetic Tank Bag 4L |
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Check Latest Price |
1. SW-Motech Pro Micro 3-5L: The Best Overall Motorcycle Tank Bag
Pro Micro Tank Bag 3-5L
Tank ring mount
Expandable 3 to 5 litres
Plastic shell
Two year warranty
Pros
- Strapless lock keeps the bag clear of paint and plastics
- Build quality owners expect to outlast the bike
- Transfers between bikes with a new PRO ring
- Expands from 3 to 5 litres with one zip
Cons
- Needs a separate PRO tank ring
- Highest cost in this group
- Too small for bulky items
This is the bag I keep coming back to. The mounting concept is the whole point. Instead of a strap that crosses your tank every time you move the bag, a small locking plate on the bag base drops onto a ring that bolts to the fuel filler area, so the bag hangs in the air above the paint rather than resting on it. Nothing rubs, nothing scratches, and you can pull it off one-handed at a fuel stop with the integrated pull strap.
At 3 litres collapsed it is genuinely a small bag. The expansion zip takes it to 5, which is enough for sunglasses, a wallet, a phone and a compact torch without the bag growing into your field of vision. Owners consistently describe the build as premium German hardware that should outlive the bike, and the two year manufacturer warranty backs that up.
The catch is cost and hardware. This is the most expensive bag in the group, and the PRO tank ring is a separate purchase unless your motorcycle came with one already fitted. That is not a small detail. If you own two bikes, you are buying two rings, though the bag itself moves between them without modification.
We also saw owners reporting occasional fit mismatches where newer bags do not seat properly on older-generation PRO rings. It is not universal, but check the ring generation before you commit, and confirm the ring for your exact model is available before you buy the bag.
Who the Pro Micro suits best
Riders who change bikes, ride a lot of different machines, or simply refuse to let a bag sit on their paint. If you are careful about how you store your tank and would rather the bag never touched it in the first place, the ring mount is the cleanest solution available and this is the best-made bag in that system.
It is also a strong choice for sport and sport-touring riders who want a slim, unobtrusive shape. A 3 to 5 litre bag barely registers on the tank, so you are not adding bulk or a visual obstruction to a machine whose whole appeal is its lines.
Who should skip it
If you carry more than a handful of small items, this is the wrong size. A 5 litre ceiling will not swallow a pair of gloves, a full-size rain jacket and a water bottle, which is exactly the load many riders want within reach.
Anyone on a tight budget should also look elsewhere. The hardware cost is real, and there are excellent strap-mounted bags in this list that handle rough terrain and bigger loads for a fraction of it.
2. TUSK Olympus Tank Bag Large 8L: Best for Adventure and Dual-Sport Riding
TUSK Olympus Tank Bag Large – 8L Motorcycle Luggage, Black/Grey, Waterproof Zippers, Phone Map Pocket, Fits ADV, Dual Sport, Touring, and Dirt Bikes
Strap mount
6 and 8 litre sizes
Waterproof with rain fly
Universal fit
Pros
- Touch-friendly clear top pocket
- Front USB pass-through with internal cable routing
- Mesh pockets and a removable divider
- Rain cover clips on and off in four clips
Cons
- Owners often consider the cost steep for the size
- Straps can have excess length depending on tie-down points
- Small size is tight for a standard bottle
Ranked number one in its category with close to 470 reviews averaging 4.7, the TUSK Olympus is the adventure-shaped bag in this group that actually tries to solve phone drainage. The front-facing USB pass-through lets a charging cable run from the outside of the bag into the internal pocket, so you can run a phone on a long ride without a loose cable snaking across your tank or a power bank taking up a third of the volume.
It comes in 6 and 8 litre sizes, and the larger one gives you real room for a day’s riding plus a layer. The interior is organised rather than a single cavern: external mesh pocket, two internal mesh pockets, elastic loops and a removable divider, so small items stop migrating to the bottom and rattling on rough roads.
Riders on KTM, Husqvarna, Honda and BMW adventure and dual-sport machines report clean fits and solid strap mounting. The mounting kit is universal with adjustable straps and buckles, which means the same bag moves between a wide range of tanks without drilling anything or buying a bike-specific ring.
The rain fly is the part we liked more than expected. It clips on with four clips, so you can pull it back for a fuel stop in a few seconds rather than wrestling with a full cover. That matters more than it sounds on a bike where you refuel every 150 miles.
What works here
The feature set is the strongest for long days on mixed surfaces. Touchscreen window, cable routing, internal organisation, a rain cover and a moderate 8 litre volume cover almost everything a rider wants access to while parked, and nothing that is better carried in panniers or a dry bag behind you.
It is also the easiest bag in this list to justify if you already own a rain shell and gloves. What it carries is the stuff you want at a border crossing, a viewpoint stop, or when you need your phone in the rain without unpacking.
What to know first
Owners repeatedly mention that the price feels steep relative to the size, and that is a fair criticism. You are paying for the cable routing and the pocket organisation rather than raw volume. If you want maximum litres for the money, one of the larger strap-mounted bags below gives you more space.
Also note leftover strap length. On bikes with far-apart tie-down points the excess webbing dangles beside the tank, which is untidy rather than dangerous, and the smaller 6 litre version is tight for a standard bottle if you plan to carry one.
3. Chase Harper USA 450 Magnetic: Best Value for Steel Tanks
Chase Harper USA 450 Magnetic Tank Bag, Water-Resistant, Tear-Resistant, Industrial Grade Ballistic Nylon with Anti-Scratch Rubberized Polymer Bottom, Strong Neodymium Magnets – Black
Magnetic mount
6.8 litres
Ballistic nylon
Rubberized anti-scratch base
Pros
- Made in the USA from industrial grade ballistic nylon
- Entire base is non-slip rubberized material
- Multiple neodymium magnets in each wing
- Reversible detachable touch-screen map pouch
Cons
- Water resistant rather than fully waterproof
- Colorways are not interchangeable for parts
If you own a bike with a steel tank and you want one bag that handles a wide range of riding without a ring, a strap or an adapter, this is the one to buy. Around 85 percent of reviews are five stars, and the reason is consistent: the magnets are genuinely strong, and the base is a full rubberized panel rather than a thin fabric or plastic sheet that lets grit grind into paint.
That base is the detail we care most about. Magnetic bags live or die on the interface with the tank, and a full non-slip rubberized bottom is the difference between a bag that grips and one that dances around at highway speed. The neodymium magnets sit in each wing, spreading the pull across the whole footprint rather than concentrating it in one place.
The detachable pouch is a genuinely useful design. It reverses so the clear touch-sensitive window faces up or down, it unzips completely so you can use the bag without it, and it holds a phone or a small GPS in a window you can operate through while stopped at a light. That solves the single most common complaint about clear tank pockets, which is that the window is not actually usable with a glove or a wet screen.
At 6.8 litres and 12 by 9 by 4 inches, the footprint stays low and does not intrude on your riding position. The build is industrial grade ballistic nylon with YKK number 8 zipper pulls throughout, and it is made in the USA.
Where it earns its place
Steel tanks, which covers a huge share of mid-size and older machines, plus any rider who wants zero installation and moves the bag between bikes. Nothing to bolt, nothing to thread, no adapter to lose. You pull it off and it comes with you when you walk into a cafe or a passport office.
It is also a good match for sport and sport-touring riders who want a bag that follows the tank lines rather than sitting on top of them like a hard case. The low profile keeps it out of the way when you lean in a corner.
Where it falls short
It is water resistant, not waterproof. In sustained rain you will want the rain cover, and that is a genuine downgrade against a fully welded PVC bag on the same list. If your riding involves long stretches in real weather, that is the deciding factor.
Magnetic attachment is also the wrong answer for a plastic or aluminium tank, and for serious off-road use where a hard surface, washboard and vibration can shift even a strong magnet. For a plastic-tank bike, look at a strap or ring mount instead.
4. Nelson-Rigg Trails End Adventure 16L: Best for High-Capacity Adventure
Nelson-Rigg Trails End Adventure Motorcycle Tank Bag, fits Most Honda Yamaha Kawasaki Adventure Bikes
Strap mount
16 litres
Waterproof
Lifetime warranty
Pros
- Quick-release straps for fast refuelling
- Maintains its shape with reflective piping
- Clear map pocket works with touchscreens
- Reverse coil zippers keep out dust
Cons
- 16 litres sits high on smaller tanks
- Strap hardware adds bulk versus a magnetic bag
This is the largest volume on the list at 16 litres, and it is the pick for a rider who genuinely wants tank-bag capacity rather than a small essentials pouch. Owners value the structured shape, which means the bag stands up on its own and holds its form when empty instead of folding flat against the tank every time you look at it.
The quick-release straps are the practical headline. Instead of unbuckling a fixed strap and sliding the whole assembly out from under the filler, you release the bag from a base that stays on the tank. That is a meaningfully faster fuel stop, and on a bike with a 20 litre range it adds up over a season.
Weather sealing is handled properly for a bag this size. The bag is listed as waterproof, reverse coil zippers keep dust and grit out of the closures, and the interior is lined rather than bare fabric, which stops small items abrading the inside over time. A rain cover is also included in the box.
There is a lifetime warranty on materials and workmanship, which is unusual at this price and reflects a brand that expects the bag to last as long as the bike does. The UltraMax fabric is chosen for fade resistance, so a black bag should still look black after five summers of sun.
What you gain
Space. Sixteen litres covers a full day of riding plus a change of clothes, or a wet jacket and gloves alongside a camera, without moving anything to a pannier. Riders on Honda, Yamaha and Kawasaki adventure platforms report clean fits on contoured tank shapes thanks to the vehicle-specific base.
The clear map pocket is touch friendly, so route changes do not require stopping and fishing the phone out of a pocket. The reflective piping adds low-light visibility at stops, which is a small thing that matters on remote roads.
What you give up
Compact dual-sport tanks are the problem. A 16 litre bag on a small tank sits high enough to interfere with the rider, and the extra mass near the steering head is noticeable on a bike built to be nimbler. Check your tank size before ordering this one.
Strap mounting also means more hardware on the bike than a pure magnetic bag, and it will not move to another bike as easily. If you ride one machine and want maximum volume, this is the right trade. If you swap bikes constantly, the smaller ring-mounted option makes more sense.
5. Nelson-Rigg Route 1 Journey 7L: Best for Cruisers and V-Twins
Nelson-Rigg Route 1 Journey Highway Cruiser Magnetic Tank Bag, fits Harley Davidson, Indian, Honda, Yamaha, Suzuki and more
Magnetic mount
7 litres
Metal tanks only
Expansion zipper
Pros
- Soft-covered magnets hold without marking paint
- Protective base prevents slipping
- Hi-viz orange interior finds items fast
- Clear touchscreen pocket
- Does not need moving to refuel
Cons
- Only works on metal tanks
- Compact 5 to 7 litre capacity
Most cruiser and retro riders we talked to assume a tank bag will look out of place on a V-twin. This one does not, largely because it is shaped and sized for the way those tanks are built, and because it mounts magnetically in seconds rather than leaving a base bolted to the filler forever.
Cruiser owners on Harley-Davidson, Honda, Suzuki and Yamaha report a very secure hold, no tank marking, easy one-handed installation and a footprint that does not interfere with fill-ups. That last point is the practical one on a bike with a side-mounted filler and a big steel tank. The bag sits clear of the cap, so you refuel without moving anything.
The details that show real use in this bag are small and good. The magnets are soft covered, so the contact face is gentle on paint. The interior is hi-viz orange, which sounds frivolous until you are looking for a set of keys in a bag full of dark items at a dim rest stop. And the clear pocket is touch-screen friendly for map or phone use.
A rain cover is included, the fabric is UltraMax with a lifetime warranty, and a bottom expansion zipper lets you open the volume up when a longer trip demands it. At 1.8 pounds it stays light on a heavy machine.
The right fit for this bike type
Long, slow days on a bike with a large metal tank, where the tank bag is used for a phone, sunglasses, a wallet and a tube of sunscreen rather than for cargo. The low profile keeps the classic silhouette intact, and the magnetic quick nature suits a bike that is more about the ride than the luggage.
The expansion zipper is the useful part for a rider who wants one bag for a two-hour loop and a two-week tour. Collapsed it stays discreet; expanded it takes a rain layer and a full set of tools.
Where it does not work
Plastic and aluminium tanks are excluded outright. That rules out a lot of modern sport and adventure machines, and some cruisers with composite tanks. If your tank is not steel, choose a strap or ring mount.
Capacity is the other limit. This is a 5 to 7 litre bag and it is not intended for bulky loads, so riders who want to carry a camera body with a lens, or a full waterproof jacket, will need something larger. The bigger adventure bag or the 12 litre model cover that better.
6. Nelson-Rigg Hurricane 2.6L: Best for Dirt, Enduro and Dual-Sport
Nelson Rigg Waterproof Hurricane Dual Sport/Enduro Tank Bag, Black/Grey
Strap mount
2.6 litres
100 percent waterproof PVC
Welded seams
Pros
- Welded PVC tarpaulin gives true waterproofing
- Compact size sized for dual sport tanks
- Outer surface cleans easily and resists marking
- Touch-screen friendly top pocket
Cons
- Small 2.6 litre capacity
- Strap mount rather than magnetic
If you ride enduro or dual-sport trails, waterproofing matters more than capacity, and this is the only bag in the group built from 100 percent waterproof PVC tarpaulin with electronically welded seams. There is no fabric weave to soak, no zipper chain to leak, and nothing to forget in the way you forget a rain cover. It also cleans with a hose.
At 2.6 litres it is the smallest bag here, and that is deliberate. It is sized for narrow, compact tanks and a bike that gets ridden hard, where a big bag is a liability in exactly the way riders describe on r/motorcycles. Less bag, less to snag, less weight near the bars.
The outer material is designed to prevent slipping or marking, which matters when the bag is strapped over a tank that gets dusty, wet and scuffed every ride. Inside there are three compartments, including a flap pocket, plus elastic loops in the base of the main compartment to stop small items migrating into a corner.
There is a clear touch-screen friendly top pocket for a phone or GPS, and the whole thing carries a lifetime warranty on materials and workmanship. At 1.5 pounds it is one of the lighter options, which is the right side of the trade for a bike where every pound near the steering head is felt.
When this is the correct pick
Trail, enduro and mixed-surface riding where you will get wet and stay wet, and where you want a bag you can hose off rather than air out. A fully welded seam is something no rain cover can match, because the cover is the part that gets left at home on the one ride that turns out wetter than forecast.
It also suits riders on small, narrow tanks. Lots of dual-sport and enduro machines have very little flat area, and a contoured small bag fits where a 12 litre bag would overhang and catch on the tank at full steering lock.
When it is the wrong pick
If you need to carry a rain jacket, spare gloves and lunch, 2.6 litres will not do it. That is a ride-to-work shortfall, not a trail shortfall, and it is the most common complaint among owners who accepted the size on the trail and regretted it on the highway.
Strap mounting also takes a little more effort at a fuel stop than a magnetic bag. On a dirt bike that is rarely an issue, since you usually fill up when the tank is nearly empty and the trail is not in a hurry.
7. cortech Super 2.0 12L: Best for Long Trips Off the Bike
cortech Super 2.0 12L Motorcycle Tank Bag
Magnetic or strap variants
12 litres
1680D ballistic polyester
Hideaway backpack straps
Pros
- Heavy-duty 1680D ballistic and 1800D twill jacquard
- Non-slip diamond pattern base
- Removable map pocket plus internal mesh pockets
- Hideaway backpack straps and a drink tube port
Cons
- 12 litres adds bulk and height
- Weighs 2.5 pounds
- Mount type must be chosen as a variant
The feature here that no other bag in this roundup has in the same form is the hideaway backpack strap system. Stowed, the bag looks like a normal tank bag. Deploy them and it becomes a personal bag you can shoulder off the bike and carry to a market, a hostel or a checkpoint. On a trip where you leave the motorcycle unattended more than a few minutes, that changes what you are willing to carry.
The construction is the heaviest spec sheet in the group. A 1680 denier ballistic polyester body paired with 1800 denier twill jacquard is real abrasion resistance, and it is backed by a repair-or-replace warranty for one year from purchase. The base uses a non-slip, non-scratch diamond pattern rather than a flat sheet, which helps both grip and paint protection.
Organisation is thorough: a removable snapped map pocket, two internal mesh pockets, a hidden external pocket and a soft-lined organiser. There is a built-in sip tube and headphone port, and an integrated rain cover with a clear window plus reflective piping for night visibility, so the cover does not blind you at a stop.
Owners like that the bag is genuinely useful off the motorcycle rather than being a tank bag with a shoulder strap bolted on. If you travel solo, that is worth real money. It comes in magnetic and strap variants, so pick the mount when you order.
What works
Long trips where the bag empties and refills as your kit changes. A 12 litre soft bag absorbs a wet mid-layer or a full camera body without the hard edges that make luggage dangerous on a bike. The backpack conversion handles the walk from a parking spot to a gate, a hotel or a viewpoint.
For riders who carry a hydration reservoir, the built-in port removes the usual routing problem. The reflective rain cover is also useful on the bike, not just off it, when you are parked on an unlit road at dusk.
What to watch
Twelve litres is a lot of volume sitting on a tank, and 2.5 pounds is the second heaviest bag here. On a small tank, or a bike where you spend time stood on the pegs, the height and weight are the first things you will notice. Riders on r/motorcycles are blunt about bags that intrude on their position, and this one is closer to that end of the range.
The mount is a variant choice rather than a standard feature, so verify you have ordered the version that suits your tank. And the one year repair warranty is shorter than the lifetime coverage offered on the Nelson-Rigg bags in this list.
8. Rhinowalk 5-6.5L: Best for Security and Theft Deterrence
Rhinowalk Motorcycle Tank Bag 5L-6.5L with Strong Magnetic Quick Release Magnetic Tank Bag with Rain Cover fits Harley Davidson, Indian, Honda, Yamaha, Suzuki and More-Black
Magnetic quick release
5 to 6.5 litres
Pin-tumbler lock
6000mm rain cover
Pros
- Integrated pin-tumbler lock plus a zipper combination lock
- Magnetic quick release detaches in a flick
- PA66 nylon and glass fibre adapter structure
- 6000mm rated rain cover included
Cons
- Needs the Rhinowalk adapter base system
- 48mm adjustment range may not clear some shapes
Most tank bags are an open invitation to someone who finds your bike parked. This one is built differently. The magnetic quick release lets you flick the bag off in a second, and it carries an integrated pin-tumbler lock plus a free combination zipper lock, so the contents are secure even if the bag itself is off the bike and in your hand.
The adapter structure is the engineering story. It uses PA66 nylon with 15 percent glass fibre and 10 percent carbon fibre, which is a serious composite for a motorcycle accessory. The bag body is Hypalon and 1680D polyester Oxford, and it expands from 5 to 6.5 litres with mesh pockets, a plush-lined bottom, a Velcro patch and a cable port inside.
The rain cover is rated at 6000mm, which is a serious figure for an accessory cover, and the whole bag is listed as waterproof. There is 48mm of forward and backward position adjustment, so you can tune the offset from your bars rather than living with a fixed position.
At 4.6 stars across 98 reviews, this is a newer listing with a smaller base of owners than the established bags here. The sentiment is strongly positive, at roughly 85 percent five stars, and the repeated mentions are the locks, the instant removal and the expansion. It suits Harley-Davidson, Indian, Honda, Yamaha and Suzuki tanks in particular.
Where the security matters
Anyone who leaves a bag on the bike with a passport, a wallet, a camera or a laptop in it while they walk away. Flick-off magnetic removal means the valuables come with you into a cafe, a museum or a border office, and the locks mean the bag is still secure in your hand.
It also works for riders who carry tools or a tyre repair kit, where a zipped compartment is a small but real upgrade over a mesh pocket that anyone can reach into. The internal cable port is a bonus for riders running a charging lead.
What to check before you order
The bag requires the Rhinowalk magnetic adapter base to mount to the tank. That base is a separate piece of hardware tied to your specific tank, so confirm the correct base for your motorcycle exists before buying the bag, or you will end up with a bag and nothing to attach it to.
The 48mm adjustment range is also a limitation on some shapes. Highly sculpted tanks, or bikes where the bars or a screen mount intrude on the mounting area, can fall outside that travel. The review base is also younger than the others here, so long-term durability is less well documented.
9. Dracarys Magnetic Tank Bag 4L: Best Budget Pick
Dracarys Motorcycle Tank Bag – Oxford Saddle Black Motorbike Bag – Strong Magnetic Bag for Honda Yamaha Suzuki Kawasaki Harley
Magnetic mount
4 litres
Oxford fabric
Three compartments
Pros
- Most reviewed bag in this roundup
- Three pockets including a clear phone window
- Rainproof cover and shoulder strap included
- Works across many makes of motorcycle
Cons
- Small magnets may need the strap at speed
- Clear window can overheat a phone
- Not for plastic or aluminium tanks
With well over 2,700 reviews averaging 4.4, this is the most tested bag in the roundup, and that volume matters for a cheap product. You are not guessing. You are reading thousands of owners reporting on the same bag over years of regular use, and the consistent theme is that it holds up far better than the price suggests.
It also does something the more expensive bags often do not: it comes with a shoulder strap and an internal rainproof cover. The strap turns it into a small personal bag, which is how most owners end up using it, taking a phone and wallet into a shop rather than leaving them on the tank.
The Oxford fabric is decent, the layout is sensible with three pockets, and the clear window works with a touchscreen, which sounds minor until you realise how many clear pouches are sealed and unusable. Owners consistently praise the combination of value, durability and the roomy multi-pocket layout for the money.
It fits a wide range of bikes, including Hondas, Yamahas, Suzukis and Harleys, and the product line comes in 4, 10 and 28 litre versions, so this specific bag is the small end rather than the only option. Weights in at just 3.2 ounces, it is by far the lightest bag here.
Who it works for
New riders, commuters on a budget, and anyone who wants to try a tank bag without committing much. Three pockets at 4 litres covers a phone, wallet, keys, sunglasses and a pair of light gloves, which is the daily-carry load for a huge number of riders.
At that weight it barely registers on a lightweight bike, and the universal fit means it moves between whatever you own. If you are not sure whether a tank bag is for you, this is a low-risk way to find out.
What to fix before you ride
The magnets are the weak point. Multiple owners report the bag holding solidly at highway speeds, but others see it shift or dance, and the common recommendation is to run the included fixing strap over the top. Two seconds of work, and it removes the most common complaint about the bag.
The clear phone window also traps heat, and owners in hot climates report phones getting warm during long sunny rides. Take the phone out at stops, or use the window for a folded map instead. And check your tank material first, because this is a magnetic bag and it will not work on plastic or aluminium.
10. KIWISE Magnetic Tank Bag 4L: Compact Magnetic Bag for Simple Rides
Motorcycle Tank Bag, Water Resistant with Super Strong Magnetic Gas Oil Fuel Tank Bag Black bigger Window for Honda Yamaha Suzuki Kawasaki Harley
Magnetic mount
4 litres
Polyester
Large viewing window
Pros
- Four magnets hold at highway speed on mid-size bikes
- Detaches fully in seconds for refuelling
- Large window fits a phone in a rugged case
- Compact soft shell fits a wide range of tanks
Cons
- Window is not sealed and the bag is only water resistant
- Phone seam can weaken with use
- Included magnets are small
- Touchscreen use is inconsistent
This is the simplest bag on the list and one of the better ones. Four magnets, a soft polyester shell, a 4 litre volume and a large transparent window. It rates 4.4 across nearly 1,400 reviews, and the dominant owner sentiment is that it is good value with ample room for a phone, wallet, gloves and a water bottle.
What makes it work is the size of the window. It is large enough to fit a phone in a rugged case, which most tank bag windows are not, and combined with the magnetic quick release you can lift the whole bag off, take the phone out, and drop it back on without fussing with a strap at a fuel stop.
Owners report the four magnets hold at highway speed on mid-size bikes, which is the normal use case. Carry straps are included for off-bike transport. At 14 by 7 by 7 inches the profile stays compact, so it does not dominate a small tank or obstruct your view over a low bar.
The polyester construction is straightforward and wear resistant, and the buckle closure gives you quick access. It suits a commuter, a learner on a mid-size machine, or anyone who wants one small magnetic bag and nothing more complicated.
What works
Riders on KLR650-class and similar mid-size machines who want a small bag that stays put. The dimension footprint is narrow enough to clear most tank contours, and the soft shell means it will not be a hard edge if you clip a kerb or drop the bike on a trail.
If your priority list is phone access, quick removal and low cost, this hits all three. The detaches-in-seconds behaviour is the most-used feature according to owners, more than any pocket or compartment.
What weakens it
It is water resistant rather than waterproof, and the clear window is not sealed, so rain gets in around the pouch. In real weather you would want to take valuables out before a downpour rather than trusting the shell.
Two smaller issues recur: the touchscreen does not work reliably through the window, and the pouch seam is a known weak point that can tear with heavy regular use. Some owners also replace the small included magnets with neodymium ones, which is a cheap five-minute fix if you plan to ride fast or on rough roads.
How to Choose a Tank Bag Mount: Ring, Strap or Magnet
The mount type decides almost everything else about a tank bag, so choose it before you look at fabric or pockets. There are three systems, and each one trades security against convenience in a different direction. Getting this wrong is the reason riders end up buying a second bag.
Tank ring (Tanklock and PRO systems). A small adapter bolts to the fuel filler area, and the bag locks onto it with no strap and no contact with the paint. Strongest in a crash because the load is anchored to a bolt rather than to friction, easiest to remove one-handed, and the only system that transfers between bikes if you own a ring for each. You pay for a separate ring per bike.
Strap mount. Adjustable straps fasten over the tank or to fixed tie-down points, usually on a base that stays put while the bag unclips. It works on any tank material, survives rough surfaces and washboard far better than a magnet, and costs less. The trade-off is time at every fuel stop, and the straps are one more thing to snag.
Magnetic. Magnets in the bag wings hold directly to a steel tank. Nothing to install, nothing to thread, and the bag comes off in a second. It is the cheapest and fastest system, and it does not work at all on plastic or aluminium tanks. Off-road, where vibration and hard surfaces are constant, even strong magnets can shift.
Do tank bags affect motorcycle handling?
Only if the weight is real and badly placed, and the honest answer is that most tank bags are not the problem people think they are. A 4 litre bag at around 3 ounces is noise. A 16 litre bag at 2 pounds is not, and the effect is about position, not just mass.
The reason a heavy tank bag matters is that it sits high and ahead of the steering head, near the centre of the front end. That location is exactly where manufacturers try to keep weight low and central. Adding mass up there does not turn a bike into a different bike, but on a lightweight or small-displacement machine, especially an enduro or dual-sport bike built to be nimble, riders report feeling the bike become less willing to change direction at speed.
The practical guidance we would give is simple. Keep the bag under about 8 litres for anything faster than a dirt trail, keep heavy items low and centred in the main compartment rather than in an outer pocket where they sit proud, and do not run a 12 or 16 litre bag on a bike with a compact tank. If you are about to load a full tank bag, ask first whether those items could live in panniers or a tail bag instead, where the mass sits lower and closer to the rear axle.
Magnetic bags and plastic or aluminium tanks
This is the rule that catches people out most often. Magnets need a ferromagnetic surface, and that means a steel tank. A plastic or aluminium tank has nothing for them to hold to, full stop, and this is not a matter of stronger magnets. Some riders on r/motorcycles make the point bluntly: there is no point buying a magnetic bag for a bike with a plastic tank.
Before you buy any magnetic bag, check whether your tank is steel. Most full-size cruisers, standard roadsters, many V-twins and a lot of older and mid-size machines are steel. Most modern sport bikes, many adventure and dual-sport machines, and an increasing share of retro models use plastic or aluminium.
There is a second magnetic problem that catches even the right-tank owners. Grit. Anything trapped between the bag base and the tank gets ground into the paint every time the bag moves, and magnets actively pick up metal debris from the road. Wipe both the tank and the base of the bag clean before reattaching, every time, and check the base for embedded particles. A non-slip rubberized base, as on the Chase Harper 450, helps a great deal here.
For a plastic or aluminium tank, a strap mount is the reliable answer, and a tank ring is the cleanest if the ring is available for your bike. Never force a magnetic bag onto a plastic tank with extra adhesive magnets as a workaround. It will not hold properly and it will still mark the tank.
Waterproof construction versus a rain cover
Water resistant, waterproof, and welded waterproof are three different claims, and brands use them loosely. Water resistant means the fabric sheds light rain for a limited time. Waterproof usually means coated fabric with taped or sealed seams, which holds up in a shower but can weep at a zipper under sustained rain. Welded waterproof means the seams are heat-sealed or electronically welded, with no stitching to let water through.
For short commutes and fair-weather riding, water resistant plus an included rain cover is perfectly adequate, and the cover is more forgiving of a hard downpour than a lot of coated fabric. For year-round riding, mixed weather, or anything involving genuine off-road, welded construction is the only category worth paying for, because the cover is always the thing you left on the kitchen table.
One practical detail beats all of the above. A cover that clips on and off in four clips beats a full zipped cover every single time, because you will actually use it. The TUSK Olympus rain fly is the best example on this list.
What to pack in a tank bag by trip length
Tank bag capacity numbers are close to meaningless until you map them to a load. The rule we use: a tank bag is for things you need while stopped or while riding. It is not for things you only need once at the destination.
Day ride, 4 to 6 litres. Phone, wallet, keys, sunglasses, a thin glove pair and a compact rain shell. This is what the Dracarys, the KIWISE and the Chase Harper 450 are sized for, and it is genuinely enough for most commutes.
Weekend trip, 8 to 12 litres. Everything above plus a full waterproof jacket, spare gloves, a small charger and a day of food. The TUSK Olympus and the cortech Super 2.0 cover this range, and the Super 2.0’s backpack straps make carrying it off the bike practical.
Multi-week tour, 12 to 16 litres and up. Only worth it if you are deliberately carrying a lot on the front of the bike, which most experienced riders avoid. If you are at this level, a 16 litre bag means you are rebalancing weight, and a tail bag or panniers serve you better.
Whichever tier you buy, keep the heavy items low and centred, keep the zipper pull on the opposite side from your knee, and take anything genuinely valuable with you rather than leaving it in a bag on a parked motorcycle. Even the bags with locks on this list are an inconvenience deterrent, not theft-proof storage.
For a sizing check before you buy, the cardboard trick still works. Cut a rough footprint of the bag you are considering, hold it on the tank, sit on the bike and check your view of the instruments and your knee clearance at full steering lock. If you also want the bike covered when it is parked overnight, our full motorcycle covers guide is the companion piece.
Frequently Asked Questions
What are the best tank bags for motorcycles?
The best motorcycle tank bags in our testing group divide by mount type. The SW-Motech Pro Micro 3-5L is the best overall thanks to its strapless ring lock that keeps the bag off the paint. The Chase Harper USA 450 is the best value for steel tanks, with neodymium magnets and a rubberized anti-scratch base. The TUSK Olympus 8L is the best for adventure and dual-sport riding, with a USB pass-through port and a clip-on rain fly. Smallest-capacity winners are the fully welded 2.6 litre Nelson-Rigg Hurricane for enduro riding.
Who makes the best tank bags?
No single brand wins every category, and the mount system matters more than the badge. SW-Motech makes the best ring-mounted bag we tested, with a strapless lock and build quality that owners describe as outlasting the bike. Nelson-Rigg offers the widest range, from a 2.6 litre welded PVC enduro bag to a 16 litre adventure bag, and all of them carry a lifetime warranty. For magnetic bags, Chase Harper USA builds the one with the best anti-scratch base. Choose the brand that makes the mount your tank supports.
What is the best tank bag for a Harley Davidson motorcycle?
For a Harley with a steel tank, the Nelson-Rigg Route 1 Journey 7L is the strongest fit. Its magnetic mount installs in seconds, its footprint sits clear of the filler so you can refuel without moving it, and owners on Harley-Davidson, Indian, Honda, Suzuki and Yamaha report a secure hold with no tank marking. Riders who want more volume and a detachable carry system should consider the cortech Super 2.0 12L in its magnetic variant. If your Harley has a composite tank, choose the strap version instead.
Do tank bags affect motorcycle handling?
Most small tank bags have a negligible effect. A 4 litre bag weighing a few ounces will not change how a bike handles, and riders with a magnetic bag rarely notice it at all. Larger bags do, because the mass sits high and ahead of the steering head. A 12 or 16 litre bag adds 2 to 2.5 pounds in exactly the area manufacturers work to keep light, and on lightweight or dual-sport machines riders report a bike that feels less willing to turn at speed. Keep heavy items low and centred, keep day-ride bags under about 8 litres, and move bulkier loads to panniers or a tail bag.
How good are magnetic tank bags?
Magnetic tank bags are excellent on a steel tank and useless on anything else. They are the fastest and cheapest system, install nothing, and lift off in a second, which is why they suit steel-tank cruisers and standard roadsters. They have two limitations. First, they do not work at all on plastic or aluminium tanks, because there is no surface for the magnets to grip. Second, grit trapped between the bag and the tank scratches paint, so wipe both surfaces before reattaching. A fully rubberized base reduces that risk considerably.
What are the pros and cons of tank bags?
The advantages are fast access to essentials without a backpack, weight taken off your back on long trips, and a secure place for valuables when the bike is parked. The disadvantages are weight near the steering head on larger bags, a bag that can obstruct your view or your knee clearance if it is oversized, added hardware on the tank with a ring or strap mount, and the fact that most bags are water resistant rather than truly waterproof. Riders who prefer a completely clean tank often decide a tank bag is not for them at all.
What size tank bag do I need?
Match the bag to the trip, not to the tank size. For a day ride or a commute, 4 to 6 litres is enough for a phone, wallet, keys, sunglasses, light gloves and a compact rain shell. For a weekend trip, go to 8 to 12 litres so you can carry a full waterproof jacket, spare gloves and a charger. Above 16 litres you are carrying a load that belongs in panniers or a tail bag, and the weight on the front of the bike becomes a real handling consideration. A quick cardboard footprint test on your tank confirms the fit before you buy.
Final Verdict
After ten bags, one rule held: the mount system decides the bag, not the logo. Steel tank and one bike, take the Chase Harper USA 450. Plastic or aluminium tank, take a strap mount, and for serious trails the fully welded Nelson-Rigg Hurricane is worth the small capacity. One-handed fuel stops and pristine paint, buy a tank ring and start with the SW-Motech Pro Micro. Adventure days with a phone that needs charging, the TUSK Olympus is the one we would have chosen first with hindsight.
Whichever of the best motorcycle tank bags you settle on, run it on a cardboard footprint before you commit, and fit the strap if a magnetic bag ever moves on you. If you are still working out what else the bike needs, our motorcycle ramps guide covers loading and unloading, and if the tank bag is part of a longer-distance setup, the lithium battery roundup covers the electrical side of long trips.