---
product_id: 17482917
title: "BOSS Audio MCBK420B Motorcycle Bluetooth Speaker System – One 2 Channel Compact Amplifier, Two 3” Weatherproof Speakers, One Volume Control, Great For Use With ATVs / Motorcycles, 12 Volt Vehicles"
brand: "boss audio systems"
price: "R$1800"
currency: BRL
in_stock: true
reviews_count: 13
category: "Boss Audio Systems"
url: https://www.desertcart.com.br/products/17482917-boss-audio-mcbk420b-motorcycle-bluetooth-speaker-system-one-2-channel
store_origin: BR
region: Brazil
---

# 30 ft Bluetooth wireless range 600W peak power output Weatherproof design for all conditions BOSS Audio MCBK420B Motorcycle Bluetooth Speaker System – One 2 Channel Compact Amplifier, Two 3” Weatherproof Speakers, One Volume Control, Great For Use With ATVs / Motorcycles, 12 Volt Vehicles

**Brand:** boss audio systems
**Price:** R$1800
**Availability:** ✅ In Stock

## Summary

> 🎵 Amplify your adventure — sound that rides as hard as you do!

## Quick Answers

- **What is this?** BOSS Audio MCBK420B Motorcycle Bluetooth Speaker System – One 2 Channel Compact Amplifier, Two 3” Weatherproof Speakers, One Volume Control, Great For Use With ATVs / Motorcycles, 12 Volt Vehicles by boss audio systems
- **How much does it cost?** R$1800 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/17482917-boss-audio-mcbk420b-motorcycle-bluetooth-speaker-system-one-2-channel)

## Best For

- boss audio systems enthusiasts

## Why This Product

- Trusted boss audio systems brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Power:** Compact class D amplifier and adjustable 3-inch speakers fit handlebars .75”–1.25” with easy installation—no bulky gear required.
- • **Ride Loud, Ride Proud:** 600 watts of crystal-clear sound blasts through your ride, even at highway speeds.
- • **Seamless Wireless Jams:** Bluetooth connectivity lets you stream Spotify, Pandora, or your entire playlist effortlessly within 30 feet.
- • **Built to Brave the Elements:** Advanced weatherproofing means your music stays uninterrupted rain or shine.
- • **Custom Control at Your Fingertips:** Inline volume knob mounts anywhere on your handlebars for quick, safe adjustments on the go.

## Overview

The BOSS Audio Systems MCBK420B is a compact, weatherproof motorcycle speaker package featuring two 3-inch full-range speakers and a 2-channel class D amplifier delivering up to 600 watts peak power. It offers Bluetooth wireless streaming with a 30-foot range, a 3.5mm auxiliary input, and an inline volume control for convenient handlebar mounting. Designed for motorcycles, ATVs, and UTVs, it fits handlebars from 0.75 to 1.25 inches and comes with a 3-year platinum warranty when purchased through authorized dealers.

## Description

desertcart.com: BOSS Audio Systems MCBK420B 3 Inch Motorcycle Speakers and 2 Channel Amplifier Package - Bluetooth, Weatherproof, Volume Control, ATV UTV Compatible : Electronics

Review: Boss Speakers with Bluetooth amp - Iv got a Indian scout 60 bobber with a exhaust and it’s pretty loud, no problems at all cruising down the road at 65 and hearing them, they work awesome sound is amazing nice and clear and there not big and bulky,Iv had them on my bike a week now and they ain’t never let me down, don’t drain on your battery and the volume knob acts as a toggle no there not a reason to cut or splice like I thought I was going to half to when u cut the switch it kills all power to the 600 watt amp yes u Hurd right 600 watts on two 3 inch speakers very easy to hook up also.
Review: 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!

## Features

- 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 desertcart.com. We strongly encourage professional installation of this product to ensure proper and safe functionality

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 | #5 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 out of 5 stars 7,172 Reviews |
| Enclosure Material | Plastic |
| Frequency Response | 15 KHz |
| Global Trade Identification Number | 00791489123082 |
| Impedance | 4 ohm |
| 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 |
| Manufacturer | BOSS Audio Systems |
| Maximum Range | 30 feet |
| Model Name | MCBK420B |
| Model Number | MCBK420B |
| Mounting Type | Handlebar Mount |
| Number of Audio Channels | 3 |
| 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 779423617668 |
| 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 |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** BOSS Audio Systems
- **Connectivity Technology:** wired, wireless
- **Frequency Response:** 15 KHz
- **Speaker Maximum Output Power:** 600 Watts

## Images

![BOSS Audio MCBK420B Motorcycle Bluetooth Speaker System – One 2 Channel Compact Amplifier, Two 3” Weatherproof Speakers, One Volume Control, Great For Use With ATVs / Motorcycles, 12 Volt Vehicles - Image 1](https://m.media-amazon.com/images/I/7198WKY5rML.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Why would you recommend, this set of 4 or the set of 2 with 600 watts ?**
A: I tried running 4 in the amp provided by boss but it didn't have the power needed to dedicate for clear and loud sound. I went back down to two of these and 2 6/9s in my fairing in a separate amp. I would not recommend more then 2, but with just the 2 it was a decent sound I was pleased with it.

**Q: Will these fit a 300cc touring scooter?**
A: The MCBK420B may fit. Thank you.

**Q: Will this work with a Honda Rebel 250?**
A: I see no reason why they won't fit your Honda Rebel.If you put it up on utube to see the fitting instructions, you can decide if you want to go ahead with the fitting.You won't be disappointed with the great sound.

**Q: Where do I find a replacement fuse?**
A: Available at local auto parts or Walmart automotive department

## Customer Reviews

### ⭐⭐⭐⭐⭐ Boss Speakers with Bluetooth amp
*by D***D on June 10, 2026*

Iv got a Indian scout 60 bobber with a exhaust and it’s pretty loud, no problems at all cruising down the road at 65 and hearing them, they work awesome sound is amazing nice and clear and there not big and bulky,Iv had them on my bike a week now and they ain’t never let me down, don’t drain on your battery and the volume knob acts as a toggle no there not a reason to cut or splice like I thought I was going to half to when u cut the switch it kills all power to the 600 watt amp yes u Hurd right 600 watts on two 3 inch speakers very easy to hook up also.

### ⭐⭐⭐⭐⭐ 2008 Harley Davidson Sportster 1200 Install!
*by D***N on April 7, 2019*

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!

### ⭐⭐⭐⭐ Easy install, No Bass
*by C***J on June 28, 2026*

Put on an electric golf cart and they are fairly loud. Obviously it lacks bass but I knew that when purchasing. Easy install.

## Frequently Bought Together

- 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
- Nilight RGB LED Rock Lights Kit, 4 pods Underglow Multicolor Neon Light Pod with Bluetooth App Control Flashing Music Mode Wheel Well Light for Truck ATV UTV RZR SUV
- Yutrax Universal Mount ATV Backrest, Heavy-Duty Steel Seat Frame, Adjustable Seat Back Positions, 2” Thick Cushion, Folds Down Flat When Not in Use, TX219

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.br/products/17482917-boss-audio-mcbk420b-motorcycle-bluetooth-speaker-system-one-2-channel](https://www.desertcart.com.br/products/17482917-boss-audio-mcbk420b-motorcycle-bluetooth-speaker-system-one-2-channel)

---

*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-07-28*