BOSS Audio Systems MCBK420B Bluetooth Speaker System – Class D Compact Amplifier, 3 Inch Weatherproof Speakers, Volume Control, Great for Use with ATVs/Motorcycles, 12 Volt Vehicles
€85






Price: $84.99
(as of Aug 05, 2025 00:26:06 UTC – Details)
Product Description



Powersports
Motorcycle Bluetooth Speaker System – Class D Compact Amplifier, 3 Inch Weatherproof Speakers, Volume Control
MCBK420B
Take great music with you on the trails with the BOSS Audio Systems MCBK420B Weatherproof Sound System. Blast your tunes on your Motorcycle, Scooter / ATV with the compact Amplifier and a pair of 3” Full Range Speakers. Hook your Smartphone or MP3 Player up to the Aux Input. Bluetooth Streaming lets you play your favorite music apps like Spotify and Pandora. Turn up the sound with the Wired Remote Volume Control. The MCBK420B features Weatherproof Speakers to provide protection against the elements.
• Pair of Black 3″ Full Range Speakers Feature a Built-in Bluetooth Wireless Streaming Receiver – No Headunit Needed • 600 Watt Max Amplifier (Dimensions 3.1″ x 3.1″ x 1.5″) with Wired Remote Volume Control • Bluetooth Audio Streaming – Stream your Favorite Music or Music Service like Spotify or Pandora Wirelessly • 3.5 mm Aux Input Compatible with Audio Output of Smartphones and MP3 Players • Frequency Response 80Hz to 15KHz, SN >85dB, THD: < 0.01%
Features

Bluetooth Audio Streaming
Wirelessly stream audio via Bluetooth from compatible devices so you can listen to streaming music services such as Spotify and Pandora through your system.

Aux Input
The Aux Input allows you to connect to the audio output of an external device such as an MP3 Player or Smartphone so you can enjoy your music through your system.

Weatherproof Speakers
The speakers are weatherproof which means they are protected against moisture from rain, splashed water, fog and other elements.

Inline Volume Control
Wired Remote Control that can be installed in a convenient, safe place to allow you to control the volume of your system while riding.

Mounting Hardware Included
The mounting hardware and wiring needed to do the installation are included.
Bluetooth – Play and control a vast library of your favorite music using your smartphone or MP3 device, plus plug into apps like Spotify and Pandora wirelessly
Amplified – A Bluetooth, compact, weatherproof, class D amplifier is included
Weatherproof – The MCBK420B has been outfitted with the latest weatherproofing techniques for protection against the elements
Speakers – Also included are two 3-inch matte black full range speakers. The adjustable brackets will fit handlebars from ranging from .75” to 1.25”
Playback – A 3.5 mm auxiliary input is compatible with audio outputs of smartphones and MP3 players
Volume Control – A convenient inline volume control (attached to the amplifier) can be installed in a place of your choosing, making sure that when the need hits… so will your tunes
BOSS Audio Systems provides a powerful 3-year platinum online dealer warranty so long as the purchase is made through Amazon.com. We strongly encourage professional installation of this product to ensure proper and safe functionality
13 reviews for BOSS Audio Systems MCBK420B Bluetooth Speaker System – Class D Compact Amplifier, 3 Inch Weatherproof Speakers, Volume Control, Great for Use with ATVs/Motorcycles, 12 Volt Vehicles
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€85
Curtis L Emery –
Highly recommend, great purchase
So far these have turned out to be a great purchase.Instructions give a very clear guide on installation. Everything being labeled makes it super simple to understand. Connecting to the system is very easy. Speakers are clear and sound great even at highway speeds. Although there is almost no bass, so upbeat songs donât exactly sound the same.The only minor cons that I could think of so far is that the instructions donât tell you that you will have to have some kind of wire connector to connect them to your power/ground source. So if you donât have any, be prepared to make a run for them. The other thing is the rubber pieces that come with this are either really thin or really thick, there is no in between. I had to use the thick ones and a locking plier to get the bottom nut onto the threads and it proved to be slightly challenging.Â
Jay –
Easy Install, Good Sound, No Battery Drain
Installed on a Can-Am Ryker (stock exhaust)BOSS Audio Systems MCBK420B Bluetooth Speaker SystemOverall, this is a solid little setupâespecially for the price! Installation was super easy. I wired it directly to the battery, and despite what some reviews say, I havenât had any battery drain issues. The volume knob doubles as the on/off switchâjust remember to turn it off when youâre done, and youâre good to go. Iâve tested it like this for several days with no problems.As for sound: you definitely get clear highs and mids, but donât expect any bassâthis is a budget-friendly system after all. Still, itâs way better than riding in silence. I can hear my music clearly at around 40 MPH. And when youâre stopped? Itâs almost too loudâmy ears were ringing a bit from the volume, haha!
Robert –
Very good product at a good price
The Bluetooth speaker and the amplifier sounds great. Very easy installation and very easy too put everything where you want it.
Amazon Customer –
Good bang for your buck speakers
These speakers seem like a good bang for the buck. Have them on my super magna. They seem to have good sound and are very loud. Not much bass but don’t need bass to enjoy the music. Fairly easy install hardest part was finding a spot on the handlebars,and finding a spot for the amp. Will give it 5 stars after I get out on the road with them and put some miles on them and see how they hold up
Morgan Rackliff –
Great Quality & Even Better Sound!
I bought these for my husband’s motorcycle– He installed them last night and we were BOTH blown away at the quality of the sound, the quality of the speakers themselves, and the volume of the music. These are 100% worth every penny!
Terrance –
Eh, Not Worth It *EDIT* Meh…Sure.
I always wait for a bit before I write a review because I want time to use it. It allows me to be real and fair. This, for the price, seems pretty fantastic. From a looks standpoint, it fits the bill. I have a black motorcycle this is attached to, so the matte black option makes it blend right in. Appearance, it’s a 5*. Now, the reason this gets only 2 stars from me is for a couple of reasons.First and foremost, I purchased this about 2 months ago, and already, one of the speakers is blown. I always treat new speakers the same way; I run them a variety of ways to break them in. Well, I guess I did literally break it in. I would have it on with the volume way down low and up high and ranges in between, and about a week or two ago, the right speaker is blown. So, from a quality standpoint, that knocks it down immediately.As stated in other reviews, the sound quality is ok at best. Volume, this thing can get pretty loud. However, it doesn’t have a great range of sound, from bass and treble. It just gets loud. Now, you can definitely hear it at highway speeds with a full face helmet. Half shells, brain buckets, whatever you want to call it, you definitely hear, until the wind gets to be a bit much. But what stands out is the lack of quality sound.Installation wise, it really isn’t terrible, but it definitely isn’t easy. It contains what is needed, but it is bare minimum. I added an additional kill switch so it will cut off with the engine and not stay on all the time. That’s more of an annoyance, especially with how motorcycle batteries work.So with all that said, I wouldn’t recommend it. It’s a cheap price for sure, so I guess if you want an easy starter kit, go for it. However, I feel like I’m already forced to fix/upgrade, so this $60 some odd could’ve went for something better.EDIT**** I updated it to three stars. I wouldn’t say it blows you away by any means. I still don’t like that the speaker blew within the first few weeks of having, and I didn’t even have it on full volume. That said, it holds up well in rain, and replacing the speaker with an at least decent quality 3″ speaker makes it decent. I wouldn’t say it’s the best ever, but for the price, ease of installation and compatibility, and look, sure. Go for it if this is your budget.
Warrior 13 –
Golf cart music setup!
East setup on a golf cart, not to large, quality of sound was great, easily connected to the golf cart power, and Bluetooth setup isnât challenging at all. Value for your money for hours of entertainment!
Veronica –
Do not waste your money on these…
I bought this setup May of 2025. It is now July 2025 and the amp stopped working. I only rode 3 times and the sound was weak but it was under $100. Replaced fuse, checked quick connect connections and even re-ground the negative without success. Removed from my bike. I would not recommend. I also could not find help online except for the basic trouble shooting I already did. I hate wasting money like this.
Owen –
Speaker mounting broke within a week of installing them
Amazon Customer –
Speaker’s fitted professionally. However drained my new battery so had to pay for an additional on/off switch. Sound quite loud but could do with a lot more bass. Also impossible to register warranty as American company.
Javier –
Funcionan muy bien se escuchan perfecto
Antonio Barbosa –
Gut ist
Tina Dawe –
Perfect