10 Best Subwoofers For Motorcycle in 2026
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For Harley-Davidson touring riders who want deep, powerful bass without permanent modifications, the Rockford Fosgate HD14-SBSUB Subwoofer Kit is the best overall, offering 800 watts of system power and tool-free removal from saddlebags. Riders on other bikes or those building custom systems should consider the Polk Audio DB1242 SVC Subwoofer for its marine-grade durability or the Lanzar 8″ Powered Subwoofer for a slim, self-contained option.
Adding a subwoofer to a motorcycle is different from a car. Space is extremely limited, the system must handle rain, sun, and vibration, and the amplifier needs to be hidden. A subwoofer that works great in a truck may be too large, too heavy, or too vulnerable to the elements for a bike.
This guide is research-based, drawing on manufacturer specifications, expert round-ups, and patterns in owner feedback. We evaluated over a dozen models to find the ten best subwoofers for motorcycles, focusing on power handling, weather resistance, mounting depth, and overall value for the rider.
Top 10 Subwoofers For Motorcycle in the Market
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The Best Subwoofers For Motorcycle, Reviewed
Rockford Fosgate HD14-SBSUB Subwoofer Kit
What We Like
- 800 watt total system power
- Dual 10-inch woofers for deep bass
- Tool-free removal from saddlebags
- Includes wiring and cutting templates
Trade-offs
- Only fits 2014-2023 Harley-Davidson hardshell bags
- 39 pounds adds significant weight to saddlebags
An 800-watt dual 10-inch system purpose-built for Harley-Davidson saddlebags means you get bass that keeps up at freeway speeds without sacrificing cargo space. The design lets you remove one or both woofers easily with no tools, so you can free up bag space when needed. For riders who want a kit with wiring and cutting templates included, this turns a stock touring bike into a bass-ready ride.
The trade-off is that this kit is strictly for 2014-2023 Street Glide and Road Glide models with factory hardshell bags, and it works best if you already have a Rockford Fosgate system on the bike. At 39 pounds, it adds noticeable heft to the saddlebags, but the included amplifier and tool-free removal make it convenient for riders who use their bags for storage. This is a set-and-forget solution for Harley owners who want premium bass without the guesswork.
Polk Audio DB1242 SVC Subwoofer
What We Like
- IP56 marine certification resists salt, UV, humidity
- Dynamic Balance reduces distortion for clean bass
- Shallow mount fits tight spaces on bikes
- Polypropylene cone and Santoprene surround handle power
Trade-offs
- Single 4-ohm voice coil limits wiring flexibility
- Passive design requires external amp and enclosure
A frequency response that starts at 26Hz means this 12-inch sub can produce very low bass, which gives you that deep rumble you feel in your chest. Its shallow mount and IP56 splash-proof rating let it fit in tight spaces on a boat or motorcycle that sees rain and sun. The polypropylene cone and Santoprene surround handle the 1110W peak power while resisting moisture, so the bass stays clean in wet conditions.
Because this is a passive subwoofer, you need to supply your own amplifier and enclosure, which adds to the total cost and installation effort. The single 4-ohm voice coil limits wiring options compared to dual-coil models. If space is tight, the Skar Audio SKM10WD2 is a 10-inch alternative that may fit more easily in smaller compartments, though it has a lower peak power rating of 1000W.
Skar Audio SKM10WD2 Marine Subwoofer
What We Like
- High 500W RMS power handling
- Dual 2-ohm voice coil for wiring flexibility
- Marine-grade white finish resists elements
- Large 2.4-inch high-temp copper voice coil
Trade-offs
- Low 85.1 dB sensitivity needs more amplifier power
- 15.8 pounds adds weight to a motorcycle setup
- No enclosure included for direct mounting
With 500 watts RMS on tap, this Skar Audio marine subwoofer delivers serious bass output that can cut through wind and engine noise on the open road. The dual 2-ohm voice coil gives you wiring options to match different amplifiers, while the high-temp copper voice coil and high-flux ferrite motor handle sustained power without overheating. This is a sub for riders who want deep, authoritative low end and aren’t afraid to build a proper enclosure to get it.
The trade-off is that low 85.1 dB sensitivity means you’ll need a beefy amp to drive it to its full potential, and at 15.8 pounds it’s heavier than some alternatives like the Polk Audio DB1242 SVC at 11.6 pounds. The Skar demands more planning and power but rewards with significantly higher output capability. It’s built for the enthusiast who treats audio as part of the ride experience.
Pyle PLMRW8 Marine Subwoofer
What We Like
- Only 4.4 lbs for easy mounting
- Water-resistant marine-grade construction
- Shallow 3.6-inch mounting depth
- Polypropylene cone resists moisture
Trade-offs
- 400W peak power limits high-volume bass
- 8-inch size won't match larger subwoofer output
- Passive design requires separate amplifier
At 4.4 pounds and with a 3.6-inch mounting depth, this subwoofer fits into tight spaces under a helm or inside a box or cooler without weighing down a small boat. The polypropylene cone and water-resistant plastic housing handle moderate splashes common in marine environments, so you can enjoy clean low-frequency bass without worrying about moisture damage. Owners get a practical bass upgrade that doesn’t require sacrificing precious deck space.
Power is the main consideration here: 400 watts peak is enough to round out your music, but it won’t rattle mirrors like larger 10- or 12-inch drivers. For comparison, the Skar Audio SKM10WD2 offers more cone area and higher power handling, though at nearly four times the weight. If you want a simple, space-friendly bass boost for a boat without the bulk, this Pyle delivers practical performance for marine use.
Lanzar 8" Powered Subwoofer
What We Like
- Low-profile 3-inch height fits under seats
- Built-in amplifier simplifies installation
- Marine-grade waterproof construction
- Adjustable bass boost and phase shift
Trade-offs
- 8-inch woofer limits deep bass compared to larger sizes
- At 12.3 pounds, adds noticeable weight to a motorcycle
At just 3 inches tall, this subwoofer can fit in tight spots where many others won’t, like under a seat or in a shallow compartment. The built-in 300W RMS amplifier means you don’t need a separate amp box, keeping the installation simple. Its marine-grade waterproofing is designed to handle harsh conditions, so it’s suited for boats, trucks, and outdoor use.
An 8-inch driver produces less low-end output than larger subwoofers, so you won’t get the deepest bass that a 10- or 12-inch model can offer. At 12.3 pounds, it adds some weight, which may be a consideration for weight-sensitive installations. For riders who want a slim, self-contained subwoofer that fits in tight spaces, this Lanzar offers a practical solution.
Pyle 10" Passive Subwoofer System
What We Like
- Weatherproof ABS housing
- Marine-grade waterproof materials
- Quick-mount brackets included
- Compact for small spaces
Trade-offs
- Passive design requires external amplifier
- At 9.5 lb, adds noticeable weight to a bike
A 10-inch passive subwoofer with a weatherproof ABS housing and marine-grade construction is built to handle wet environments, so it can be mounted on vehicles that see rain or spray without concern. At 400 watts and 88 dB sensitivity, it delivers bass that can be heard over road noise, and the quick-connect terminals make wiring straightforward. This subwoofer is for anyone who needs low-end sound in a rugged, exposed location without worrying about the elements.
This subwoofer is passive, so you’ll need to pair it with a separate amplifier and integrate it into your audio system yourself. The Rockford Fosgate HD14-SBSUB kit, by contrast, comes with an amplifier built in and is designed for select Harley-Davidson motorcycles. If you’re setting up a UTV or boat where weather resistance matters and you’re comfortable building a custom audio setup, this Pyle subwoofer is a practical choice.
Product photos

DS18 Hydro NXL-10SUBLD/W Subwoofer
What We Like
- IP65 marine-grade waterproof rating
- Integrated RGB lighting for custom looks
- Passive radiator boosts bass output
- Polyethylene plastic enclosure resists moisture
Trade-offs
- At 13.6 x 13.3 x 12.6 inches, it takes up space on a motorcycle
- RGB lighting adds wiring complexity on a bike
An IP65 marine-grade waterproof rating means this subwoofer can handle rain, mud, and the occasional puddle without flinching, which is exactly what you need when your bike lives outdoors. The 10-inch passive radiator design pushes 350 watts RMS of bass boost, so even at highway speeds you’ll feel the low end. It’s built for riders who want their music to match their bike’s personality, with integrated RGB lighting that lets you dial in a color scheme to match the ride.
Size and simplicity define this DS18. If you want waterproof bass with visual flair and have the space to mount it, this DS18 delivers where simpler units play it safe.
This subwoofer suits riders who want waterproof performance and eye-catching RGB lighting and have enough room for a larger box. It’s less ideal for minimalist setups or bikes where mounting space is tight, since the enclosure measures 13.6 by 13.3 by 12.6 inches. The integrated lights and passive radiator add a custom look, but you’ll need to plan for the extra size compared to compact options like the Pyle PLMRW8.
Product photos

NOAM Triple 10" RGB Subwoofer
What We Like
- Triple bass design with dual passive radiators
- Marine-grade all-weather waterproof build
- RGB LED lighting on three sides
- 300W RMS for deep, punchy bass
Trade-offs
- At 16.5 lbs, heavy for smaller motorcycles
- 17-inch cube size limits mounting options on bikes
- No built-in amplifier (passive radiators need external power)
A 10-inch active subwoofer backed by two passive radiators and 300W RMS means this system pushes serious low-end pressure without needing a massive amplifier stack. That triple-bass layout delivers richer, deeper bass than a single driver can manage, especially important when wind and road noise try to swallow your music. The marine-grade waterproofing and UV resistance mean rain, mud, or dust won’t stop the party.
Size and weight are the main trade-offs here. At 17 inches square and 16.5 pounds, this subwoofer is built for UTVs, boats, and golf carts, not for tucking into a saddlebag or under a seat on a sportbike. If your motorcycle has a tour pack or a dedicated cargo box with enough room, it can work, but it will dominate that space. The NOAM gives you more visual flair with RGB lighting on three sides, but it demands a larger, flat mounting surface and a willingness to fabricate brackets or a custom enclosure.
Product photos

KICKER 45KMF104 Marine Subwoofer
What We Like
- Includes powered Bluetooth handlebar speakers
- Meets ASTM UV and salt/fog standards
- Stainless mounting hardware resists corrosion
- Free-air design simplifies installation
Trade-offs
- Handlebar speakers add weight and handlebar clutter
- Subwoofer alone needs separate amplifier
- 10" size limits mounting locations on smaller bikes
The KICKER 45KMF104 subwoofer handles 175 watts RMS, so it can deliver bass that keeps up with engine noise on a boat or motorcycle. The included Rockville RockNRide handlebar speakers are fully waterproof with an IPX67 rating, meaning they can handle rain and splashes without issue. Their built-in amplifier lets you stream Bluetooth audio directly, eliminating the need for a separate amp for the highs and mids.
Compared to the Rockford Fosgate HD14-SBSUB saddlebag kit, which includes a dedicated amplifier and fits specific Harley models, this KICKER setup is more universal but requires you to supply your own amplifier for the subwoofer. Riders who want a subwoofer and handlebar speakers in one box and are comfortable wiring in a separate amp will find this combo convenient. Not ideal for those seeking a plug-and-play saddlebag subwoofer system.
Product photos

Lanzar 8" Marine Slim Amplified Subwoofer
What We Like
- Built-in amplifier saves space
- Waterproof marine construction
- Remote level control included
- Short-circuit and thermal protection
Trade-offs
- 8-inch driver limits deep bass compared to larger subs
- 10.5 pounds adds noticeable weight to a small watercraft
This powered subwoofer is only 3 inches deep, so it fits into shallow spaces like under a seat or in a tight corner of a boat console. The built-in 300W RMS amplifier eliminates the need for a separate amp, cutting down on wiring and installation steps. Its waterproof construction and thermal, short, and overload protection circuits make it suitable for damp environments like a marine deck or a powersports vehicle exposed to spray.
Product photos

How We Evaluated Subwoofers For Motorcycle
To find the best subwoofers for motorcycles, we analyzed manufacturer specifications, studied expert round-ups from the powersports audio community, and identified common themes in owner feedback. Because motorcycle audio faces unique challenges, limited space, constant vibration, and exposure to the elements, we prioritized models with marine-grade or weatherproof construction.
Our evaluation focused on four key criteria. First, power handling (RMS and peak) determined whether a sub could deliver clean bass at highway speeds without distortion. Second, weather resistance (IP ratings, marine certification, and materials like polypropylene cones and Santoprene surrounds) was critical for longevity. Third, mounting depth and enclosure design decided whether a sub would fit in a saddlebag, under a seat, or in a custom box. Finally, ease of installation (tool-free kits, included templates, built-in amplifiers) reduced the hassle for DIY riders.
Every evaluation has limits: these subs were not tested on a motorcycle at speed. Instead, the recommendations rely on published specs, professional installer reviews, and the reported real-world experiences of riders. This approach gives you a reliable shortlist to start your build.
What To Look For In Subwoofers For Motorcycle
Choosing a subwoofer for your bike means balancing power, size, and durability. The right choice depends on your bike model, your storage space, and how much bass you want.
Look for a subwoofer with at least 200W RMS for audible bass at highway speeds. Prioritize marine-grade or IP-rated weatherproofing. Measure your available mounting depth and volume before buying. Choose a complete kit if you want a simpler install, or a component sub if you want to build a custom enclosure.
Power Handling (RMS vs. Peak)
A subwoofer’s RMS (Root Mean Square) rating tells you how much power it can handle continuously, this is the number that matters. Peak power is a short burst rating and is less useful for real-world riding. For a motorcycle, look for at least 200W RMS to get clean, audible bass over engine and wind noise. Higher-powered subs like the Skar Audio SKM10WD2 (500W RMS) need a matching amplifier but can produce much deeper, punchier bass.
Weather Resistance and Materials
Motorcycles live outside. A subwoofer must resist UV rays, salt, humidity, and direct water spray. Look for marine certification (IP56 or higher), polypropylene cones, Santoprene or rubber surrounds, and stainless steel hardware. The Polk Audio DB1242 SVC carries an IP56 rating, meaning it’s protected against powerful water jets and is suitable for exposed installations on a bike.
Mounting Depth and Enclosure
Space is the biggest constraint on a motorcycle. Measure your available mounting depth (the distance from the mounting surface to the back of the sub) and total enclosure volume. Shallow-mount subs like the Pyle PLMRW8 (3.6-inch depth) fit under seats or in slim boxes. Saddlebag kits like the Rockford Fosgate HD14-SBSUB are pre-designed for specific bike models and include the enclosure and templates.
- Measure the mounting depth, width, and height of your available space before shopping.
- Decide if you want a drop-in kit (easiest) or a component sub (most flexible).
- Check the subwoofer’s impedance (2-ohm, 4-ohm) to match it with your amplifier’s stable load.
- Confirm the enclosure is sealed or ported as the sub requires.
- Verify all mounting hardware is stainless steel or corrosion-resistant.
A simple rule: if you cannot fit the enclosure, the subwoofer will not work, measure twice, buy once.
Subwoofers For Motorcycle Compared
The table below compares all ten subwoofers on power handling, weather resistance, mounting depth, and weight so you can quickly see which models fit your bike and your bass goals.
| Product | Woofer Size | Power (Watts) | Weight (lbs) | Waterproof / Marine Grade |
|---|---|---|---|---|
| Rockford Fosgate HD14-SBSUB Subwoofer Kit | Dual 10-inch | 800 watts | 39.0 pounds | N/A |
| Polk Audio DB1242 SVC Subwoofer | 12-inch | 1110W | 11.6 pounds | IP56 |
| Skar Audio SKM10WD2 Marine Subwoofer | 10-inch | 1,000 Watts | 15.8 pounds | Marine |
| Pyle PLMRW8 Marine Subwoofer | 8-Inch | 400W | 4.4 pounds | Waterproof |
| Lanzar 8" Powered Subwoofer | 8 inches | 1000W | 12.3 pounds | Waterproof |
| Pyle 10" Passive Subwoofer System | 10 inches | 400 watts | 9.5 pounds | Waterproof |
| DS18 Hydro NXL-10SUBLD/W Subwoofer | 10 inches | 700W MAX | N/A | IP65 |
| NOAM Triple 10" RGB Subwoofer | 10" | 300W | 16.5 lbs | Waterproof |
| KICKER 45KMF104 Marine Subwoofer | 10" | 350W Peak | 14.0 pounds | Marine |
| Lanzar 8" Marine Slim Amplified Subwoofer | 8" | 1000W | 10.5 lbs | Waterproof |
Frequently Asked Questions
Can I install a subwoofer on any motorcycle?
Most motorcycles can accept a subwoofer, but the installation method varies. Touring bikes like Harley-Davidsons have saddlebag space for pre-built kits. Sport bikes and cruisers with less storage may need a shallow-mount subwoofer under the seat or a custom enclosure mounted to the frame. Always measure your available space before buying.
Do I need a separate amplifier for a motorcycle subwoofer?
It depends on the subwoofer. Powered subwoofers like the Lanzar 8″ Powered Subwoofer have a built-in amplifier, simplifying wiring and installation. Passive subwoofers require an external amplifier to drive them. Check the product specifications: if it lists RMS power handling and does not include a built-in amp, you will need to add one.
How do I protect a subwoofer from rain and road spray on a bike?
Choose a subwoofer with a marine-grade or IP-rated weatherproof construction. Look for an IP56 rating or higher, which means the sub is protected against powerful water jets and dust. Materials like polypropylene cones, Santoprene surrounds, and stainless steel hardware resist corrosion. For extra protection, mount the sub in a sealed, weatherproof enclosure.
What size subwoofer is best for a motorcycle?
Eight-inch and ten-inch subwoofers are the most common sizes for motorcycles because they fit in saddlebags, under seats, or in small enclosures. A 10-inch sub generally produces deeper bass than an 8-inch, but it requires more space. Twelve-inch subs like the Polk Audio DB1242 SVC can work on larger touring bikes if you have room for the enclosure.
How much bass can I expect from a motorcycle subwoofer?
A well-matched system with at least 200W RMS can produce noticeable, punchy bass that is audible at highway speeds. You will not get the same ground-shaking output as a car system due to the open-air environment and limited enclosure volume. For maximum impact, look for a sub with 300W RMS or more and pair it with a quality amplifier.
The Bottom Line
For Harley-Davidson touring riders who want the most complete, hassle-free solution, the Rockford Fosgate HD14-SBSUB Subwoofer Kit is the best overall. It delivers 800 watts of system power with dual 10-inch woofers, fits directly into 2014-2023 hardshell saddlebags, and removes without tools for quick access to storage. This is the pick for anyone who values a clean install and deep bass without cutting or drilling.
If you ride a non-Harley bike or want to build a custom marine-grade system, the Polk Audio DB1242 SVC offers excellent versatility with its IP56 rating and shallow-mount design. For riders who need a slim, self-powered sub that fits under a seat, the Lanzar 8″ Powered Subwoofer simplifies the install with its built-in amplifier and low 3-inch profile.
The single most important factor in choosing a motorcycle subwoofer is fitment. Measure your available space, match the sub to your amplifier’s power, and prioritize weatherproof construction. Do that, and you will enjoy clean, deep bass on every ride.





