

🏍️ Turn your ride into a rolling concert—because silence is so last season!
The BOSS Audio Systems MCBK420B package delivers powerful 600W max output through 3-inch weatherproof speakers paired with a compact Class D amplifier. Featuring Bluetooth connectivity with a 30-foot range and an inline volume control, it’s designed for motorcycles, ATVs, and UTVs. Its rugged, weather-resistant build ensures durability in all conditions, backed by a 3-year platinum warranty for peace of mind.








| ASIN | B00T3QBL3M |
| Additional Features | Amplified, Built-in Bluetooth, Weatherproof |
| Antenna Location | For Music Players |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Best Sellers Rank | #3 in Powersports Speaker Systems |
| Bluetooth Range | 30 Feet |
| Brand | BOSS Audio Systems |
| Built-In Media | Amplifier |
| Color | Black |
| Compatible Devices | MP3 Player, Smartphone |
| Compatible with Vehicle Type | Motorcycle |
| Connectivity Protocol | Bluetooth |
| Connectivity Technology | wired, wireless |
| Control Method | Remote |
| Controller Type | Remote Control |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.3 4.3 out of 5 stars (7,085) |
| Enclosure Material | Plastic |
| Frequency Response | 15 KHz |
| Global Trade Identification Number | 00791489123082 |
| Impedance | 4 Ohms |
| Input Voltage | 12 Volts |
| Is Waterproof | False |
| Item Dimensions D x W x H | 4.5"D x 4"W x 4"H |
| Item Type Name | Boss Audio Systems MCBK420B Motorcycle Bluetooth Speaker System - Class D Compact Amplifier, 3 Inch Weatherproof Speakers, Volume Control, Great for Use With ATVs / Motorcycles, 12 Volt Vehicles |
| Item Weight | 3.8 Pounds |
| MP3 player | No |
| Manufacturer | BOSS Audio Systems |
| Maximum Range | 30 Feet |
| Model Name | MCBK420B |
| Model Number | MCBK420B |
| Mounting Type | Handlebar Mount |
| Number of Audio Channels | 3.0 |
| Number of Batteries | 1 12V batteries required. |
| Number of Items | 3 |
| Power Source | Corded Electric |
| Speaker Maximum Output Power | 600 Watts |
| Speaker Size | 3 Inches |
| Speaker Type | Outdoor |
| Specific Uses For Product | Pro Audio |
| Subwoofer Connectivity Technology | Wired |
| Tweeter Diameter | 1 Inches |
| UPC | 791489123082 |
| Unit Count | 1 Count |
| Warranty Description | 3 YEAR PLATINUM DEALER WARRANTY |
| Warranty Type | Extended |
| Water Resistance Level | Water Resistant |
| Wireless Technology | Bluetooth |
| Woofer Diameter | 3 Inches |
D**N
2008 Harley Davidson Sportster 1200 Install!
Quality product! Sound is awesome for a $60 system, at 40mph and lower its great. It's plenty loud enough, but as you approach 60 mph and up truth is no stereo is going to sound like a home audiophile system. Bottom line is 'buy it'! Customer service is first rate, they are great! Also, I read some complaints about bass. When I first connected the speakers they too sounded a bit flat. I clicked onto my Poweramp music player and set it to large concert hall and max bass and presto... truly impressive rich sound! My install - I mounted the speakers on the handlebars just inside the windshield. Then, ran all the wires and the amp into a small, front fork mounted, 'tool bag' type pouch. The main issue is the red hot wire. I must have watched a dozen youtube videos on this subject. I usually ride with my high beam on. I know its obnoxious, but down here in Florida anything you can do to stay visible is a life saver. I unscrewed the chrome cover that holds the daymaker headlight in place. Sadly, Harley does not provide an auxiliary wire in the headlight wiring harness of Sportster's. At least not in mine. There are three wires entering the headlight assembly from a hole in the back. Black wire is ground, white wire is High Beam, yellow wire is Low Beam. I used a plastic splice connector from Home Depot to connect the red Boss power wire to the white High Beam wire. (AMP Splice Tap Connectors 10 pack). The hole in the back of the headlight assembly where Harley runs the headlight wires - Harley runs the wire harness though the hole with a rubber bushing that protects the wires and keeps water from getting in. I tried to slice the rubber bushing so that I could add the Boss red hotwire but it was cramped quarters and I couldnt get in there without taking the chance of cutting the headlight wires also. You may be able to do it, I couldn't. I ran the red power wire through the hole and at the point where it touched the metal headlight housing I covered the wire with an extra couple of layers of electrical tape to protect it from the housing wearing through the insulation and shorting the amp. Then, pushed the rubber bushing back into the hole. It wasn't a perfect fit, there was a slight gap because of the red wire I installed. It also wasn't a terrible fit - and then I put the headlight and headlight retainer back into place. After continual testing at every stage, and when I was sure all worked as it should, I used a dab of black silicone caulk and filled in the gap between the rubber bushing and the outside of the headlight assembly. This also helped hold the red power wire in place and reduce any chance of shorting against the headlight casing. I ran the ground wire outside the headlight housing for a few inches to a windshield mounting bolt and tightened it down. (I didn't want the ground wire taking up space going through the headlight hole, so I split the red power wire and the ground wire before the power wire entered the headlight housing hole. You may find it works just fine running both wires through, especially after using caulk to close up the hole where the wires enter.) Finally, I used zip ties to connect the volume button to the left side windshield mount, very close to where my hand naturally fits onto the handlebar grip. I believe you want the volume control where your left hand can safely get to it without too much reaching. Final result is my Boss audio system works only when the high beam is on. And when the bike is turned off there is no chance of the amp staying on and draining the battery. Also, my install required no drilling, no running wires under gas tanks and seats, and no toggle switch. I love having music now!!! Safe riding!
C**E
Great wuality speaker
These speakers are perfect! I bought them and installed them on my KLR. They were a little difficult to install on the handle bars because of the thick rubber strips to reduce size but once I got the nut started, I was able to tighten them without issues and they are extremely sturdy. The sound quality is amazing and I can hear my music while cruising at 75. The Bluetooth connectivity is great! Cable hookup is straightforward and didn’t have any issues with wiring.
S**.
No Regrets!
I must say I'm satisfied with this product. Definitely got my money's worth. Easy install and as for the big question...Yes I can hear the music while traveling on the highway. It was even better with the wind screen on. Here's a couple pictures after I installed it no regrets!
C**Y
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 don’t exactly sound the same. The only minor cons that I could think of so far is that the instructions don’t tell you that you will have to have some kind of wire connector to connect them to your power/ground source. So if you don’t 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.
F**R
LOUD!
Very Loud, but no base. I still liked them
T**E
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.
O**N
Speaker mounting broke within a week of installing them
T**L
Easy install, louder then I was expecting sound quality is high on the highway at 120km/h in 55km/h winds I was still able to hear my music and enjoy it without turning the volume all the way up
A**R
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.
N**N
Easy to install
A**L
Hasta ahora todo bien! Solo debes poner un interruptor para que no se baje la batería pero sonido muy nítido y con calidad. Complementamente satisfecho igual esta un poco complicado poner los soportes de las bocinas pero una vez que tienes la forma correcta todo bien. Recomendado tengo Sportster 883.
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