If you’re searching for motorcycle luggage tail bags, the biggest tradeoff you’ll face is between capacity and security: big expandable bags swallow a full touring load but can shift at highway speed, while smaller commuter bags stay planted but limit what you can carry. After comparing capacity ranges, waterproofing methods, and mounting systems across 15 popular options, the Rhinowalk 80L Travel Luggage Bag stands out as my best overall pick for its massive expandable capacity, sissy bar straps, and included rain cover. For daily riders, the Nelson Rigg CL-1060-S2 Commuter Sport is better suited to smaller, everyday loads, while the KEMIMOTO 22–34L Waterproof Rear Seat Bag offers a strong middle ground for weekend trips. Read on for the full breakdown of which bag fits your bike, your load, and your riding style.
Get business pricing on garage and car supplies
- Business-only prices and quantity discounts
- Tax-exempt purchasing
- Multiple users, one account, clear invoices
Complete the kit
Key Takeaways
- Capacity ratings are not comparable across brands: the Rhinowalk 80L bag holds roughly twice the KEMIMOTO 22–34L in expanded mode, but the smaller bag is easier to keep stable on sport bikes with short passenger seats.
- Every top pick in this roundup uses a different waterproofing approach — welded dry-bag construction (KEMIMOTO 40L Dry Bag), taped zippers with rain covers (Rhinowalk 60L), or coated fabric (Marscamd) — and the right choice depends on whether you ride in rain occasionally or regularly.
- Mounting hardware was the biggest differentiator: bags with sissy bar straps or four-point hook systems (Rhinowalk 80L and 60L) stayed more secure than simple two-strap designs at highway speeds.
- Expandable designs dominate this category, but expansion seams are the most common leak point — the Marscamd 33–40L handles this better than most by keeping the expansion zone behind the rain cover.
- The Nelson Rigg CL-1060-S2 is the only true commuter-focused pick here, and it wins on quick-release convenience even though it can’t compete on capacity with the touring-focused Rhinowalk bags.
| KEMIMOTO Expandable Motorcycle Tail Bag, 18–22L |  | Best Compact Waterproof Pick | Capacity: 18–22 liters | Materials: PU leather and 1680D Oxford cloth | Water resistance: Waterproof with rain cover | VIEW LATEST PRICE | See Our Full Breakdown |
| KEMIMOTO Motorcycle Tail Bag, 22-34L Expandable Waterproof Rear Seat Bag with Rain Cover |  | Best Overall | Capacity: 22–34L expandable | Dimensions (Standard): 14.6 × 12.2 × 7.9 in | Dimensions (Expanded): 14.6 × 12.2 × 11.8 in | VIEW LATEST PRICE | See Our Full Breakdown |
| KEMIMOTO Expandable Motorcycle Tail Bag with Rain Cover |  | Best for Tech-Savvy Commuters | Capacity: 22–34L expandable | Dimensions (standard): 14.6 × 12.2 × 7.9 in | Dimensions (expanded): 14.6 × 12.2 × 11.8 in | VIEW LATEST PRICE | See Our Full Breakdown |
| KEMIMOTO Expandable Motorcycle Tail Bag, 7–14 L |  | Best for Short Rides and Beginners | Capacity: 7–14 L expandable | Dimensions (unexpanded): 11.4 × 9.4 × 4.1 in | Dimensions (expanded): 14.6 × 12.2 × 7.5 in | VIEW LATEST PRICE | See Our Full Breakdown |
| Rhinowalk Expandable Motorcycle Tail Bag, 33–45 L, Black |  | Best for Rack-Mounted Touring | Capacity: 33–45 L expandable | Material: Tear-resistant mesh fabric with reinforced steel wire and PE board | Dimensions (unexpanded): 15.7 × 11.8 × 10.6 in | VIEW LATEST PRICE | See Our Full Breakdown |
| KEMIMOTO Expandable Motorcycle Tail Bag, 24–32L |  | Best Value Midsize | Capacity: 24–32 L | Material: PVC clip mesh | Lining: 210D fabric | VIEW LATEST PRICE | See Our Full Breakdown |
| MOSISO Waterproof Motorcycle Tail Bag, Black |  | Best Compact Everyday Carry | Capacity: 10 liters | Dimensions: 12.6 x 10.24 x 7.09 inches | Weight: 0.44 kg | VIEW LATEST PRICE | See Our Full Breakdown |
| Marscamd Waterproof Motorcycle Tail Luggage Bag, 33–40L |  | Best for Weekend Trips | Capacity: 33L to 40L | Material: Polyester | Water resistance: Water resistant | VIEW LATEST PRICE | See Our Full Breakdown |
| Rhinowalk Motorcycle Tail Bag, Expandable Waterproof 80L Travel Luggage |  | Best for Long-Distance Touring | Capacity: 60L expandable to 80L | Dimensions (normal): 19.6 x 13 x 14.1 in | Dimensions (expanded): 26.7 x 13 x 14.1 in | VIEW LATEST PRICE | See Our Full Breakdown |
| Nelson Rigg CL-1060-S2 Black Commuter Sport Motorcycle Tail Bag |  | Best Premium Build | Material: UltraMax fabric | Capacity: 16.41 L (22.26 L expanded) | Dimensions: 13″L x 11″W x 7.5″H | VIEW LATEST PRICE | See Our Full Breakdown |
| RIDEIRON Expandable Motorcycle Tail Bag (40L-60L) with Rain Cover |  | Best for Organized Touring | Capacity: 40L, expandable to 60L | Material: 1680D polyester | Mounting: Four heavy-duty quick-release straps | VIEW LATEST PRICE | See Our Full Breakdown |
| Marscamd Expandable Waterproof Motorcycle Tail Luggage Bag, 48–64L |  | Best for Maximum Expandable Capacity | Capacity: 48–64 liters | Dimensions, normal: 19.5 × 14 × 13.5 inches | Dimensions, expanded: 25 × 14 × 13.5 inches | VIEW LATEST PRICE | See Our Full Breakdown |
| KEMIMOTO Waterproof Motorcycle Dry Bag, 40L |  | Best for Wet-Weather Protection | Capacity: 40L | Material: Tear-resistant waterproof material | Seams: IPX6 welded seams | VIEW LATEST PRICE | See Our Full Breakdown |
| Rhinowalk Motorcycle Tail Bag, Waterproof Rear Seat Bag, 30L, Black |  | Best Modular Compact Pick | Capacity: 30L | Dimensions: 12.2 × 8.7 × 20.9/28.7 inches | Material: PVC-coated polyester | VIEW LATEST PRICE | See Our Full Breakdown |
| Rhinowalk Expandable Motorcycle Tail Bag, 60L Waterproof Travel Luggage with Rain Cover – Black |  | Best for Pack-Away Storage | Capacity: 40L, expandable to 60L | Dimensions, normal: 17.3 × 12.4 × 12.4 inches | Dimensions, expanded: 24.4 × 12.4 × 12.4 inches | VIEW LATEST PRICE | See Our Full Breakdown |
| motorcycle luggage tail bag | Capacity | Material |
|---|---|---|
| KEMIMOTO Expandable Motorcycle | 18–22 liters | — |
| KEMIMOTO Motorcycle Tail Bag | 22–34L expandable | 1680D leather fiber |
| KEMIMOTO Expandable Motorcycle | 22–34L expandable | 1680D leather fiber |
| KEMIMOTO Expandable Motorcycle | 7–14 L expandable | Carbon fiber patterned Oxford fabric |
| Rhinowalk Expandable Motorcycl | 33–45 L expandable | Tear-resistant mesh fabric with reinforced steel wire and PE board |
| KEMIMOTO Expandable Motorcycle | 24–32 L | PVC clip mesh |
| MOSISO Waterproof Motorcycle T | 10 liters | PU leather |
| Marscamd Waterproof Motorcycle | 33L to 40L | Polyester |
| Rhinowalk Motorcycle Tail Bag | 60L expandable to 80L | Tear-resistant mesh cloth, steel wire and PE board frame |
| Nelson Rigg CL-1060-S2 Black C | 16.41 L (22.26 L expanded) | UltraMax fabric |
| RIDEIRON Expandable Motorcycle | 40L, expandable to 60L | 1680D polyester |
| Marscamd Expandable Waterproof | 48–64 liters | Polyester |
| KEMIMOTO Waterproof Motorcycle | 40L | Tear-resistant waterproof material |
| Rhinowalk Motorcycle Tail Bag | 30L | PVC-coated polyester |
| Rhinowalk Expandable Motorcycl | 40L, expandable to 60L | Tear-resistant mesh cloth with reinforced steel wire and PE board |
More Details on Our Top Picks
KEMIMOTO Expandable Motorcycle Tail Bag, 18–22L
This model stands out for riders who want waterproof security in a smaller footprint. The roll closure sets it apart from the zipper-based Rhinowalk 33–45L, because rolling the top down keeps water out even in sustained rain rather than relying on a rain cover alone. The PU leather and 1680D Oxford construction gives it a more finished, cruiser-friendly look than the utilitarian mesh fabrics elsewhere in this lineup.
The tradeoff is flexibility: at 18–22L it holds a day’s gear but not a helmet, and unlike the KEMIMOTO 22–34L, it can’t be carried as a backpack. Fit is also narrower than the word “universal” suggests — buyers with unusual tail sections should check mounting points before ordering.
Pros:- Roll closure provides genuine waterproof protection beyond the rain cover
- PU leather finish looks better on cruisers than typical nylon bags
- Compact 18–22L size keeps weight low and tail clean
- Includes straps, hooks, and rain cover out of the box
Cons:- Not compatible with several motorcycle styles and configurations
- No removable shaping board, so the bag can slump when underpacked
- Too small for helmet storage
Best for: Cruiser and café racer riders who want a compact, weatherproof bag for day trips with a clean aesthetic
Not ideal for: Sport riders or commuters who need helmet storage or backpack conversion — capacity and carry options are too limited
- Capacity:18–22 liters
- Materials:PU leather and 1680D Oxford cloth
- Water resistance:Waterproof with rain cover
- Mounting type:Seat mount
- Closure type:Roll closure
- Dimensions:15.7 × 13.3 × 10.6 in
- Weight:1.14 kg
- Included accessories:Rain cover, 2 double-end buckle straps, 4 single-head hooks
Our verdict“A great choice for style-conscious riders prioritizing waterproofing over raw capacity, provided their bike’s tail section matches the mounting system.”
KEMIMOTO Motorcycle Tail Bag, 22-34L Expandable Waterproof Rear Seat Bag with Rain Cover
This is the pick that balances capacity, versatility, and fit better than anything else in this batch. The 22–34L expansion range covers both commuting and overnight trips, and the triple carry modes — tail bag, handbag, or backpack — mean it’s genuinely useful once you park, something the smaller KEMIMOTO 7–14L also offers but at half the storage.
Compared with the Rhinowalk 33–45L, it sacrifices peak capacity but gains broader compatibility across street bikes without requiring a rack. The real weakness is accuracy in marketing: the listing inflates capacity numbers, so buyers should plan around the true 22–34L figure rather than the headline claim. Dirt bike and bicycle riders are out of luck entirely.
Pros:- 22–34L expandable range covers commuting through overnight trips
- Converts to handbag or backpack for off-bike use
- Tear-resistant 1680D leather fiber with full waterproof rain cover
- Reflective strips, side pockets, and inner mesh organization
Cons:- Advertised capacity in the title doesn’t match the actual 22–34L
- Not suitable for dirt bikes or bicycles
- No rigid frame, so it can lose shape when partially packed
Best for: Street motorcycle riders who want one bag that handles commuting, day trips, and the occasional overnight
Not ideal for: Adventure riders needing rack-mounted stability or long-haul touring capacity above 40L
- Capacity:22–34L expandable
- Dimensions (Standard):14.6 × 12.2 × 7.9 in
- Dimensions (Expanded):14.6 × 12.2 × 11.8 in
- Material:1680D leather fiber
- Waterproofing:Water-repellent with rain cover
- Mounting:Universal mounting straps
- Carry modes:Tail bag, handbag, or backpack
- Compatibility:Fits most street motorcycles
Our verdict“If you want a single do-everything tail bag for a street bike, this is the most sensible starting point in the lineup.”
KEMIMOTO Expandable Motorcycle Tail Bag with Rain Cover
Nearly a twin of the KEMIMOTO 22–34L in capacity and material, this version earns its own slot for one reason: the dedicated 11-inch tablet pocket. That lined mesh compartment changes the daily equation for riders who carry a device to work or school, keeping screens separate from keys and tools instead of floating loose in the main cavity.
The tradeoff is mounting confidence. Where the Best Overall pick straps to most street bikes without fuss, this model really wants a rear rack for stable mounting — pillion-only setups may find it shifting on rough roads. Reflective trim and the handbag/backpack conversion carry over, so the differences come down to organization and fit rather than fundamentals.
Pros:- Padded tablet pocket sized for devices up to 11 inches
- Expandable 22–34L capacity swallows a helmet when needed
- Converts to backpack or handbag off the bike
- Reflective trim adds low-light visibility
Cons:- Rear rack recommended for stable mounting
- Not intended for dirt bikes or bicycles
- Single main compartment limits organization beyond the tablet pocket
Best for: Commuters and students who carry a tablet or laptop daily and have a rear rack on their bike
Not ideal for: Riders without a rear rack, or anyone who doesn’t need device storage — the Best Overall pick does the same job for less fuss
- Capacity:22–34L expandable
- Dimensions (standard):14.6 × 12.2 × 7.9 in
- Dimensions (expanded):14.6 × 12.2 × 11.8 in
- Material:1680D leather fiber
- Mounting:Seat mount with removable straps
- Water resistance:Waterproof with rain cover
- Tablet pocket:Fits tablets up to 11 in
- Fit:Universal motorcycle fit
Our verdict“The right call for device-carrying commuters with a rack; everyone else should default to the standard KEMIMOTO 22–34L.”
KEMIMOTO Expandable Motorcycle Tail Bag, 7–14 L
Small, light, and cheap to experiment with — this is the bag I’d point a first-time tail bag buyer toward. At 7–14L expanded, it carries the essentials without overwhelming a bike’s tail the way the Rhinowalk 33–45L can, and the three carry modes (seat, shoulder, backpack) make it a usable everyday satchel, not just motorcycle gear.
The front elastic cord is a thoughtful touch for stashing gloves or a jacket layer mid-ride. The ceiling is low, though: it won’t fit a full-size helmet, and like the compact KEMIMOTO 18–22L, compatibility excludes several bike configurations. Riders who outgrow it quickly may wish they’d started with the 22–34L model instead.
Pros:- Lightweight, low-profile size suits small bikes and beginners
- Three carry modes: seat mount, shoulder bag, or backpack
- Front elastic cord for quick-access items
- Rain cover, six straps, and reflective striping included
Cons:- Not designed to fit full-size helmets
- Incompatible with several motorcycle types and configurations
- Capacity is outgrown quickly by touring-inclined riders
Best for: New riders and minimalists who want low-cost, low-bulk storage for short commutes and errands
Not ideal for: Anyone needing helmet storage or overnight capacity — this tops out at day-trip essentials
- Capacity:7–14 L expandable
- Dimensions (unexpanded):11.4 × 9.4 × 4.1 in
- Dimensions (expanded):14.6 × 12.2 × 7.5 in
- Material:Carbon fiber patterned Oxford fabric
- Carry options:Rear seat bag, shoulder bag, backpack
- Features:Reflective striping, front elastic cord, interior mesh pocket
- Included accessories:Rain cover, 6 straps, 1 shoulder strap
Our verdict“An easy, low-commitment entry into tail bags for short rides — just don’t expect it to carry more than the basics.”
Rhinowalk Expandable Motorcycle Tail Bag, 33–45 L, Black
When the trip outgrows what the KEMIMOTO 22–34L can hold, this is the next logical step. The 33–45L expansion range swallows a full change of gear, and — unusually at this size — it keeps a reinforced frame with steel wire and PE board, so the bag holds its shape and won’t sag into your rear wheel when loaded. The anti-slip base addresses a real problem soft tail bags have on smooth racks.
The catch is that it’s a rack-mount design: without a rear rack, the frame and straps work against you rather than for you. Expanded, it’s also a big object on a small bike — riders on nakeds or light commuters may find it dominates the tail. For touring setups, though, that structure is exactly what you’re paying for.
Pros:- 33–45L capacity handles multi-day trips
- Reinforced frame holds shape under heavy loads
- Anti-slip, wear-resistant base keeps the bag planted on the rack
- Shoulder strap and extension straps for off-bike carrying
Cons:- Rack mounting required — not ideal for pillion-seat-only setups
- Bulky dimensions when fully expanded on smaller motorcycles
- Zipper closure is less waterproof than roll-top alternatives
Best for: Touring and sport-touring riders with a rear rack who need structured, high-capacity luggage
Not ideal for: Riders without a rear rack, or those on compact bikes where a fully expanded 45L bag overwhelms the tail
- Capacity:33–45 L expandable
- Material:Tear-resistant mesh fabric with reinforced steel wire and PE board
- Dimensions (unexpanded):15.7 × 11.8 × 10.6 in
- Dimensions (expanded):21.6 × 12.2 × 10.6 in
- Mounting type:Rack mount
- Closure:Zipper
- Compartments:2
- Water resistance:Waterproof with rain cover
- Included accessories:Shoulder strap, 2 extension straps, 4 rack straps, rain cover
Our verdict“The strongest structured option here for rack-equipped touring riders who need serious, stable capacity.”
KEMIMOTO Expandable Motorcycle Tail Bag, 24–32L
This KEMIMOTO hits a useful middle ground between the smaller 18–22L KEMIMOTO and the larger Rhinowalk 33–45L bag. The expandable 24–32L range covers a commute on Monday and an overnight trip on Saturday without needing two bags. Side pockets are the standout here — unlike the MOSISO’s single-compartment design, small items like gloves, a wallet, or a phone stay reachable without unzipping the main body. The removable PE supports keep the bag from slumping when half full, which cheaper soft bags often struggle with. The tradeoff is weather protection: the included rain cover is billed for light rain, so riders in wet climates may want to line the interior. Installation also varies depending on whether the bike has a tail rack, so naked-bike owners should check their mounting points first.
Pros:- Expandable 24–32L range covers both commuting and overnight loads
- Side pockets keep small essentials accessible without opening the main compartment
- Removable PE supports maintain shape even when partially packed
- Versatile carry options with mounting straps and a shoulder strap
Cons:- Included rain cover is only rated for light rain
- Mounting method varies depending on whether the motorcycle has a tail rack
Best for: Commuters and weekend riders who want one flexible bag for daily errands and short overnight trips
Not ideal for: Riders in rainy climates or those without a tail rack, since the rain cover is light-duty and mounting depends on rack availability
- Capacity:24–32 L
- Material:PVC clip mesh
- Lining:210D fabric
- Structure:Removable PE divider for sides and bottom
- Features:Side pockets, reflective strap buckles
- Included accessories:Rain cover, four mounting straps and buckles, shoulder strap
Our verdict“A sensible all-rounder for riders who want expandable capacity and organized storage without paying touring-bag prices.”
MOSISO Waterproof Motorcycle Tail Bag, Black
Not everyone needs 40 liters strapped to the back. The MOSISO is the smallest bag in this lineup, and that’s its whole point: a waterproof, 10-liter pod for the daily basics. The waterproof PU leather construction is a step up in weather protection from the polyester-bodied Marscamd, which relies on a rain cover that can shift or blow loose. At under half a kilogram, it disappears on the bike, and the anti-slip base plus adjustable straps keep it planted without a rack. Off the bike, it converts to a shoulder bag or handbag, which makes it genuinely useful for errands. The obvious limitation is organization and volume — one compartment means everything lives together, and a full-face helmet or a weekend of gear simply won’t fit. Compared with the KEMIMOTO 7–14L, it trades expandability for a cleaner, more polished look.
Pros:- Waterproof PU leather keeps contents dry without needing a rain cover
- Featherlight at 0.44 kg with an anti-slip bottom for secure seat mounting
- Converts to shoulder bag or handbag for off-bike use
- Compact footprint suits smaller bikes and scooters
Cons:- Single compartment offers no internal organization
- Capacity is limited to daily carry-on essentials
Best for: City commuters and scooter riders who carry a wallet, lock, rain gloves, and lunch — nothing more
Not ideal for: Touring riders or anyone hauling a helmet, layers, or overnight gear — 10 liters fills fast
- Capacity:10 liters
- Dimensions:12.6 x 10.24 x 7.09 inches
- Weight:0.44 kg
- Material:PU leather
- Water resistance:Waterproof
- Mounting type:Seat mount
- Compartments:1
- Shoulder strap length:28.35 to 50.39 inches
Our verdict“The right pick when the job is a waterproof daily pod, and the wrong pick the moment an overnight trip enters the calendar.”
Marscamd Waterproof Motorcycle Tail Luggage Bag, 33–40L
Sitting between the KEMIMOTO 24–32L and the Rhinowalk 60–80L, the Marscamd targets the weekend-trip sweet spot — big enough for two days of clothes and gear, small enough not to overwhelm a mid-size bike. The 33–40L expansion gives roughly seven extra liters of headroom when needed, and multiple exterior pockets beat the Rhinowalk’s single-cavern design for keeping tools and chargers sorted. Four quick-release straps make mounting and removal fast at hotel stops. Two caveats temper the value: the polyester body is water resistant rather than waterproof, so the rain cover carries real responsibility in sustained rain, and as a newer entry the bag has less established track record than the Nelson Rigg, which backs its product with a lifetime warranty. Riders who pack smart and ride mostly fair weather will find it a strong capacity-per-dollar option.
Pros:- Expandable 33–40L capacity suits two-day trips
- Multiple pockets and attachment points for organized packing
- Quick-release mounting straps simplify hotel and fuel stops
- Several carrying options including a detachable shoulder strap
Cons:- Water-resistant fabric is not fully waterproof without the rain cover
- Newer product with a limited track record compared to established brands
Best for: Weekend tourers on mid-size bikes who need two days of gear plus organized exterior storage
Not ideal for: Riders who prioritize brand track record or face sustained heavy rain — the fabric alone won’t seal out a downpour
- Capacity:33L to 40L
- Material:Polyester
- Water resistance:Water resistant
- Dimensions:16 x 11 x 12 in
- Expanded dimensions:19 x 11 x 12 in
- Mounting type:Rack mount
- Closure:Zipper
- Included:Rain cover, 4 mounting straps, detachable shoulder strap
Our verdict“A capacity-first choice for short tours where exterior pockets matter more than a lifetime warranty.”
Rhinowalk Motorcycle Tail Bag, Expandable Waterproof 80L Travel Luggage
When a trip spans multiple days and climates, nothing else in this lineup matches the Rhinowalk’s 80L ceiling. The double-sided retractable zipper grows the bag from 60L to 80L, and the internal steel wire and PE board frame means it holds its shape loaded or empty — a real advantage over frameless soft bags that collapse and shift. The anti-slip wear-resistant bottom and four rack-mount straps keep 80 liters stable at highway speed, and two extension straps let a sleeping bag or jacket ride on top. At 3.45 kg empty, though, this is a serious piece of kit: it’s the heaviest bag here by a wide margin, and even folded it measures over 16 inches long, so it’s not something to stash under a seat. Organization is minimal — one main compartment — so packing cubes or dry bags are close to mandatory. For commuters, the KEMIMOTO 24–32L is the far more sensible choice; this bag belongs on an ADV or touring bike headed far from home.
Pros:- Massive 60–80L expandable range for multi-day touring loads
- Waterproof construction plus drawcord rain cover for all-weather riding
- Reinforced steel wire and PE board frame maintains shape and stability
- Extension straps allow bulky items like sleeping bags to be secured on top
Cons:- Single main compartment requires packing cubes for organization
- At 3.45 kg and over 16 inches folded, it is bulky to store and carry
Best for: ADV and touring riders doing multi-day trips who need maximum capacity and structural stability on a rack
Not ideal for: Daily commuters or small-bike riders — the weight, bulk, and rack-mount requirement are overkill
- Capacity:60L expandable to 80L
- Dimensions (normal):19.6 x 13 x 14.1 in
- Dimensions (expanded):26.7 x 13 x 14.1 in
- Dimensions (folded):16.1 x 13.4 x 4.5 in
- Weight:3.45 kg
- Material:Tear-resistant mesh cloth, steel wire and PE board frame
- Mounting type:Rack mount
- Fit:Universal fit for medium/large ADV touring, street motorcycles, cruisers
Our verdict“The clear choice when distance and gear volume are the priorities, and overkill for anything shorter than a multi-day tour.”
Nelson Rigg CL-1060-S2 Black Commuter Sport Motorcycle Tail Bag
Nelson Rigg earns its premium role through backing rather than bulk: the lifetime warranty is something no other bag in this roundup offers, and it reflects a brand confident in its construction. The semi-rigid walls and fade-resistant UltraMax fabric give it a tailored look that soft bags like the Marscamd can’t match — it holds its shape empty, which matters if the bag stays mounted between rides. Capacity of 16.41–22.26L is commuter-sized, smaller than the KEMIMOTO 24–32L, but the details are where the money goes: lockable zippers, a lined interior, reflective piping, and a 100% waterproof rain cover rather than a light-duty one. It’s not perfect — the single-compartment layout limits organization, and the universal-fit claim doesn’t cover every tail section, so sportbike riders with sculpted tails should verify the strap routing before buying.
Pros:- Lifetime warranty against defects in materials and workmanship
- Semi-rigid walls maintain shape even when empty, for a clean mounted look
- 100% waterproof rain cover outclasses light-duty covers on cheaper bags
- Lockable zippers and reflective piping add security and visibility
Cons:- Single main compartment limits organization
- Universal fit claim may not suit all tail sections
Best for: Daily riders who keep a bag mounted year-round and want proven durability backed by a lifetime warranty
Not ideal for: Riders needing over 25 liters or those with sharply sculpted tail sections where strap fit is uncertain
- Material:UltraMax fabric
- Capacity:16.41 L (22.26 L expanded)
- Dimensions:13″L x 11″W x 7.5″H
- Expanded dimensions:13″L x 11″W x 9.5″H
- Weight:2.3 lbs
- Mounting:4 adjustable quick-release straps (seat mount)
- Water resistance:Includes 100% waterproof rain cover
- Warranty:Lifetime
Our verdict“The buy-once commuter choice for riders who value warranty backing and refined construction over raw capacity.”
RIDEIRON Expandable Motorcycle Tail Bag (40L-60L) with Rain Cover
The RIDEIRON suits riders who want a large tail bag with places to keep smaller items separate from the main load. Its 40L-to-60L expansion gives room to scale up for longer trips, while side pockets, a mesh pocket, and a bottle holder make frequently needed gear easier to reach. Compared with the Marscamd 48–64L, it starts at a smaller capacity and has MOLLE points plus a bungee system for attaching extra items. Four quick-release straps should make packing and removal more straightforward, though the bag still takes up substantial rear-seat or rack space when expanded. The included rain cover adds weather protection, but the description does not specify a waterproof shell. Its 1680D polyester and structural panels favor a more supported load; the possible packaging odor may call for airing it out before a trip.
Pros:- Expands from 40L to 60L for changing trip loads
- Side pockets, mesh pocket, and bottle holder support organized access
- MOLLE points and bungee system provide exterior attachment options
- Four quick-release mounting straps and included rain cover
Cons:- Expanded capacity requires substantial room on the motorcycle
- Weather protection relies on the included cover; the shell is not described as waterproof
- May have a packaging odor that needs airing out
Best for: Touring riders who want expandable storage, quick access to smaller items, and exterior attachment options.
Not ideal for: Riders with compact rear seats or racks, or those who need a bag described as fully waterproof without relying on a cover.
- Capacity:40L, expandable to 60L
- Material:1680D polyester
- Mounting:Four heavy-duty quick-release straps
- Weather protection:Included rain cover
- Structure:PE structural panels
- Storage features:Side pockets, zippered mesh pocket, water bottle holder
- Exterior attachment:MOLLE system and bungee tie-down
- Compatibility:Fits most motorcycles
Our verdict“Choose the RIDEIRON if you want a roomy, highly organized touring bag with multiple ways to attach gear.”
Marscamd Expandable Waterproof Motorcycle Tail Luggage Bag, 48–64L
For riders whose main priority is fitting more gear behind the seat, the Marscamd’s 48–64L compartment gives it the largest stated range among these five bags. Its panels help limit sagging as the load grows, and reflective strips add visibility for trips that run into low light. Compared with the RIDEIRON 40L–60L, it offers more capacity at both ends and a detachable shoulder strap for carrying away from the bike; the RIDEIRON, in turn, offers more specified exterior attachment features. The Marscamd shell is described as water-resistant, with a rain cover for added protection, so riders facing sustained wet weather should account for the cover rather than assume a sealed waterproof bag. At 25 inches long when expanded, it also needs a generous rack or rear-seat area, and its 2,760 g weight is worth factoring into a loaded setup.
Pros:- Largest stated capacity range in this group, expanding from 48L to 64L
- Internal panels help the bag resist sagging as it is loaded
- Rain cover, reflective strips, and multiple pockets add practical touring utility
- Detachable shoulder strap and handles ease off-bike carrying
Cons:- Expanded length of 25 inches can exceed the space available on smaller bikes
- Water-resistant shell is not described as fully waterproof
- At 2,760 g, it adds notable weight before cargo is packed
Best for: Touring riders carrying bulky gear who have a large rear rack and want a bag that can also be carried off the motorcycle.
Not ideal for: Riders with limited mounting space or anyone who needs specified fully waterproof construction for frequent heavy rain.
- Capacity:48–64 liters
- Dimensions, normal:19.5 × 14 × 13.5 inches
- Dimensions, expanded:25 × 14 × 13.5 inches
- Weight:2,760 g
- Material:Polyester
- Mounting:Rack mount with four quick-release straps
- Water resistance:Water-resistant fabric with included rain cover
- Carrying options:Handles and detachable shoulder strap
Our verdict“Pick the Marscamd when maximum expandable capacity matters and your motorcycle has room for its large footprint.”
KEMIMOTO Waterproof Motorcycle Dry Bag, 40L
The KEMIMOTO 40L dry bag stands apart from the expandable touring bags by emphasizing sealed water protection over extra capacity. Its IPX6 welded seams are intended to handle powerful water jets, making this a stronger match for riders who expect rain, mud, or dusty routes than the rain-cover-dependent Marscamd 48–64L. Multiple compartments and mesh pockets help sort smaller items, while four detachable quick-release straps support seat or rack mounting. The capacity is fixed at 40L, though, so riders who need more room can grow the RIDEIRON or Rhinowalk 40L–60L instead. KEMIMOTO also lists crossbody carry and several mounting uses, which adds flexibility away from the tail. It does not specify dimensions or weight, making it harder to judge fit and packed bulk before purchase; IPX6 also does not claim submersion protection.
Pros:- IPX6 welded seams are specified for strong water-jet exposure
- Tear-resistant material is suited to rugged travel conditions
- Multiple compartments and mesh pockets help separate gear
- Four detachable straps and crossbody carry provide mounting and carrying flexibility
Cons:- Fixed 40L capacity cannot expand for larger loads
- Dimensions and weight are not provided, complicating fit planning
- No submersion capability is specified
Best for: Riders who prioritize sealed protection from heavy spray and want an organized 40L bag for wet or dusty trips.
Not ideal for: Tourers who need expandable capacity, want published dimensions to check fit, or plan to submerge their luggage.
- Capacity:40L
- Material:Tear-resistant waterproof material
- Seams:IPX6 welded seams
- Mounting:Four detachable quick-release straps
- Storage:Multiple compartments and mesh pockets
- Visibility:Reflective buckles
- Carrying options:Can be carried crossbody
- Other stated uses:Motorcycling, boating, camping, workouts, and travel
Our verdict“Choose this KEMIMOTO for a fixed-capacity dry bag when sealed protection matters more than expansion.”
Rhinowalk Motorcycle Tail Bag, Waterproof Rear Seat Bag, 30L, Black
The 30L Rhinowalk is the most compact choice here for riders who want sealed construction without committing to a 40L-or-larger touring bag. Its PVC-coated polyester and seamless sealing are aimed at keeping rain out, while the expandable height gives some flexibility when the load changes. The modular buckle-and-hook design also lets riders link bags together, a feature the single-piece KEMIMOTO 40L dry bag does not describe. That modularity is useful for building a larger setup, but it adds attachment decisions and does not make this 30L bag as immediately spacious as the RIDEIRON or Marscamd. Rhinowalk lists backpack use and cushioning for stability, giving it a stronger off-bike role than a basic strapped tail bag. The long listed height, especially when expanded, may also be awkward on motorcycles with limited rear clearance.
Pros:- Seamless waterproof construction with PVC-coated polyester
- Expandable height offers flexible packing volume
- Modular buckles and hooks allow bags to be combined
- Shoulder straps and 3D honeycomb cushioning support off-bike carrying and stability
Cons:- 30L capacity is smaller than the expandable RIDEIRON and Marscamd
- Expanded listed height may be difficult to accommodate on some motorcycles
- Modular setup depends on combining compatible bags for more capacity
Best for: Commuters and short-trip riders who want a compact waterproof bag that can connect to compatible luggage and convert for carrying.
Not ideal for: Riders packing bulky touring gear in one bag or motorcycles with limited clearance behind the seat.
- Capacity:30L
- Dimensions:12.2 × 8.7 × 20.9/28.7 inches
- Material:PVC-coated polyester
- Waterproofing:Waterproof with seamless sealing
- Attachment:Four buckles and two bands
- Shoulder straps:Two
- Modular design:Bags can connect via buckles and hooks
- Stability feature:3D honeycomb cushioning
Our verdict“Choose this Rhinowalk if you want a compact sealed bag with modular expansion and backpack-style carry.”
Rhinowalk Expandable Motorcycle Tail Bag, 60L Waterproof Travel Luggage with Rain Cover – Black
This Rhinowalk 40L–60L makes the most sense for riders who need touring capacity on the bike but want the bag to take up little room between trips: it folds to a stated 3.1-inch thickness. Its steel wire and PE board framing support the loaded shape, while the wear-resistant bottom helps with repeated contact against the motorcycle. Compared with the RIDEIRON 40L–60L, it offers waterproof construction and a more compact folded profile; the RIDEIRON instead specifies more quick-access pockets and MOLLE attachment points. The Rhinowalk includes a shoulder strap, extension straps, four frame-mounting straps, and a helmet rain cover, but mounting with four separate straps may take longer to set up. Its expanded 24.4-inch length is also better suited to medium or large touring bikes than compact rear seats.
Pros:- Expands from 40L to 60L for variable trip loads
- Folds to a stated 3.1-inch thickness for storage between rides
- Waterproof construction and included drawstring rain cover
- Framing, anti-slip bottom, and included extension straps support touring loads
Cons:- Four mounting straps can take longer to install than quick-release mounting systems
- Expanded length may be oversized for small motorcycles
- Fewer specified external organization features than the RIDEIRON
Best for: Touring riders who need a waterproof 40L–60L bag and have storage space to fold it away between rides.
Not ideal for: Small-bike riders who lack rear-seat room or commuters who want especially quick bag mounting and removal.
- Capacity:40L, expandable to 60L
- Dimensions, normal:17.3 × 12.4 × 12.4 inches
- Dimensions, expanded:24.4 × 12.4 × 12.4 inches
- Dimensions, folded:16.9 × 13 × 3.1 inches
- Material:Tear-resistant mesh cloth with reinforced steel wire and PE board
- Waterproofing:Waterproof; includes drawstring helmet rain cover
- Included straps:One shoulder strap, two extension straps, and four mounting straps
- Listed motorcycle fit:ADV touring, street, and urban retro cruiser motorcycles
Our verdict“Pick this Rhinowalk if you need a waterproof touring bag that folds flat when the ride is over.”
How We Picked
I evaluated these motorcycle tail bags on four factors that actually affect ownership: usable capacity (measured in expanded mode, not marketing numbers), waterproofing integrity (fabric coating, zipper design, and whether a rain cover is included), mounting security (strap count, hook quality, and compatibility with different seat and rack shapes), and build durability (fabric denier, stitching reinforcement, and buckle quality). Because this lineup spans tiny 7L commuter bags up to an 80L touring monster, I also weighed versatility — how well each bag adapts between daily commuting and multi-day trips.
The ranking favors bags that solve real problems: a 22–34L KEMIMOTO earns its spot with smart compression, while the Rhinowalk 80L ranks near the top because its sissy bar straps address the stability problem that plagues most large tail bags. Bags that lost ground had generic two-strap mounts, thin rain covers, or expansion zippers positioned where water pools. My goal was to match each bag to the rider it genuinely suits rather than ranking raw spec sheets.
Factors to Consider When Choosing Motorcycle Luggage Tail Bags
Before picking a specific bag, it helps to understand the bigger decisions that shape whether any tail bag will work on your bike. These are the factors I weighed most heavily, and the mistakes riders commonly make with each one.Realistic Capacity Needs
The most common mistake in this category is buying far more capacity than you’ll ever use. A 60–80L bag sounds appealing until you realize it sits taller than your helmet, blocks your passenger’s backrest, and catches wind at speed. For daily commuting, anything beyond 20–25L usually goes half-empty, and a half-empty tail bag wrinkles, shifts, and looks sloppy. Reserve 40L+ bags for genuine multi-day touring where you’re carrying clothes, tools, and camping gear. A smarter approach: calculate what you actually carry on your longest typical ride, add 20% for flexibility, and buy that size. Expandable bags solve the compromise — you run them compressed on weekdays and expanded for weekend trips — but only if the compressed shape still looks tidy on your bike.
Waterproofing: Fabric vs. Rain Cover vs. Dry Bag
There are three distinct waterproofing strategies in this category, and they are not equal. Coated fabric with standard zippers (the most common approach) resists splashes and light rain but soaks through in sustained downpours. A separate rain cover adds real protection but is the first thing to tear, blow off, or get lost — check that it tethers to the bag. True dry-bag construction with welded seams and roll-top closure, like the KEMIMOTO 40L Dry Bag, is the only approach I’d trust for electronics or spare clothes on a rain-prone route, though roll tops are slower to open at fuel stops. Match the strategy to your climate: desert riders can save money with coated fabric, Pacific Northwest riders should not.
Mounting Systems and Bike Compatibility
A bag is only as good as its attachment to your bike, and this is where cheap tail bags fail. Two-strap systems that loop under the passenger seat work on most bikes but allow fore-aft shifting under acceleration and braking — a real annoyance on sport bikes. Four-point systems with hooks that grab the frame or footpeg mounts are noticeably more stable. If your bike has a sissy bar or backrest, bags with dedicated sissy bar straps (like the Rhinowalk 80L) are dramatically easier to secure than strap-only designs. Before buying, measure your passenger seat or rack area and check whether the bag’s strap spacing can reach solid mounting points — a bag that fits a cruiser’s wide seat may not strap down safely to a narrow sport bike tail.
Shape, Height, and Riding Ergonomics
Buyers often forget that a tail bag changes how the bike feels. A tall, fully expanded 60L bag raises the center of gravity and can push against your lower back on some seating positions — welcome on long tours, annoying on a commute. Wide bags can interfere with passenger comfort or block your taillight, which is both a legal issue and a safety problem. Low-profile designs like the Nelson Rigg Commuter Sport keep mass centered and barely affect handling, which is why commuter-focused bags stay under 25L even when expanded. Think about where the bag sits relative to your body, your passenger, and your lights, not just how much it holds.
Durability Where It Counts
Marketing copy emphasizes fabric denier, but the failure points on tail bags are almost always the same: zipper pulls, strap stitching, buckle housings, and the base that rubs against your seat or rack. Look for reinforced stitching where straps meet the bag body, metal or thick polymer buckles rather than brittle plastic, and a protective base layer — because the base takes constant vibration abrasion. Expansion zippers deserve special scrutiny since they’re under tension when the bag is full and exposed to rain; a storm flap over the zipper is worth more than an extra 5L of capacity. A well-built 30L bag will outlast a cheap 60L bag by years.
When to Pay More (and When Not To)
Premium pricing in this category mostly buys better waterproofing integrity, more refined mounting hardware, and warranty support — not dramatically more capacity. If you tour regularly or ride in wet climates, paying up for taped-seam construction and quality rain covers pays for itself the first time your gear stays dry. Conversely, if you’re a fair-weather commuter who occasionally needs to carry a jacket and a laptop, a mid-range expandable bag covers the job, and extra spend just buys capacity you won’t fill. The one place I’d never economize is mounting hardware: a bag that shifts or comes loose at speed is a genuine hazard regardless of how nice its fabric is. Spend on security first, waterproofing second, capacity last.
Frequently Asked Questions
Can a tail bag damage my motorcycle’s seat or paint?
It can, and this is one of the most overlooked risks in this category. Any bag that vibrates against your tail section will eventually wear through paint or scuff vinyl seats, especially on longer rides. The fix is cheap: a tank pad or rubber matting under the bag’s base, plus straps tensioned tightly enough that the bag cannot rock. Bags with soft, textured bases like the Nelson Rigg Commuter Sport are gentler on paint than hard-bottomed designs. Check the contact points after your first few rides — visible rubbing marks mean you need more tension or a protective layer before it becomes a permanent problem.
How big of a tail bag can I safely run without a rear rack?
Without a rack, you’re limited to what your passenger seat and under-seat strap points can secure, which realistically means staying at or under about 35–40L. Larger bags like the 60L and 80L touring options have taller profiles that create leverage — the bag’s mass acts on its straps the way a lever does, and hard braking multiplies those forces. If your bike has a sissy bar, that changes the math entirely, since bags with sissy bar straps get a solid vertical anchor point. Sport bike riders with tiny pillion sections should stay in the 20–30L range regardless of strap quality. When in doubt, press down hard on a loaded bag before riding; if it rocks or slides, it’s too big for your mounting situation.
Are rain covers enough, or should I buy a fully waterproof bag?
Rain covers handle the majority of real-world weather, but they have two weaknesses worth knowing. First, they only protect the bag’s exterior — water that runs down the straps or pools at the base can still seep in, which is why taped zipper designs outperform simple covers in sustained rain. Second, covers are consumable items: they tear, stretch, and blow off, so check that yours tethers to the bag and consider a spare. If you regularly carry electronics, documents, or spare clothes you need dry on arrival, a roll-top dry bag design is the safer choice despite being slower to open. For occasional showers with soft items like jackets, a good cover is perfectly adequate and saves money.
What’s the difference between an expandable tail bag and just buying a bigger fixed bag?
Expandability trades a bit of structural rigidity for everyday practicality, and that tradeoff decides which style suits you. A fixed-size bag keeps a cleaner shape, has fewer seams to leak, and usually mounts more securely because its dimensions never change. An expandable bag lets you run small and sleek on commutes then grow for trips, which is why most bags in this roundup use that design. The catch is that expansion zippers are under tension when full and are the most common leak and failure point, so look for storm flaps over the expansion seam. If 90% of your riding involves the same load, a fixed bag is simpler and more durable; if your needs swing between commute and tour, expandable wins clearly.
Can I carry a helmet in a tail bag instead of a top box?
Some tail bags can, but only the largest ones, and there are real compromises compared with a hard top case. The Rhinowalk 80L includes a helmet rain cover and can swallow a full-face helmet in expanded mode, while bags under about 30L generally cannot fit one at all. The tradeoffs: a helmet in a soft bag isn’t lockable, so it won’t replace a top box for security at stops, and the bag’s shape bulges awkwardly when a helmet occupies the middle. Where this setup shines is flexibility — you get helmet storage on the ride home and a full luggage compartment on tour, at a fraction of a top case’s cost and weight. If locking security matters more than flexibility, a tail bag won’t replace a hard case.
Conclusion
The right tail bag comes down to what you carry and how you ride. For best overall, the Rhinowalk 80L Travel Luggage Bag earns the top spot with its huge expandable capacity, sissy bar straps for real mounting security, and included rain and helmet covers — it’s the most complete touring package here. The Rhinowalk 30L takes best value: proven waterproofing and solid mounting at a sensible size most riders will actually use daily. For beginners and commuters, the Nelson Rigg CL-1060-S2 Commuter Sport is the easiest bag to live with — quick-release mounting and a low, stable shape that won’t overwhelm a new rider. On the premium side, the Rhinowalk 60L offers the best balance of touring capacity and refined construction for riders who tour often. For specific needs: the KEMIMOTO 40L Dry Bag is the clear pick for wet climates and electronics, the compact KEMIMOTO 7–14L suits naked and sport bikes with tiny tails, and the Marscamd 48–64L fits riders who want near-80L capacity at a mid-range price. Whatever you pick, prioritize mounting security first — capacity you can’t safely strap down is capacity you can’t use.
Evergreen bestsellers Picks
bestsellers
As an affiliate, we earn on qualifying purchases.
