---
product_id: 1761663
title: "MC420B 3 Inch Motorcycle Speakers and Amplifier Sound System – Class D Amplifier, Weatherproof, Volume Control, ATV UTV Compatible"
brand: "boss audio systems"
price: "62.56 OMR"
currency: OMR
in_stock: true
reviews_count: 11
category: "Boss Audio Systems"
url: https://www.desertcart.com.om/products/1761663-mc420b-3-inch-motorcycle-speakers-and-amplifier-sound-system-class
store_origin: OM
region: Oman
---

# 25m Bluetooth wireless range 3-inch chrome full-range speakers Advanced weatherproofing tech MC420B 3 Inch Motorcycle Speakers and Amplifier Sound System – Class D Amplifier, Weatherproof, Volume Control, ATV UTV Compatible

**Brand:** boss audio systems
**Price:** 62.56 OMR
**Availability:** ✅ In Stock

## Summary

> 🏍️ Elevate your ride with sound that commands attention!

## Quick Answers

- **What is this?** MC420B 3 Inch Motorcycle Speakers and Amplifier Sound System – Class D Amplifier, Weatherproof, Volume Control, ATV UTV Compatible by boss audio systems
- **How much does it cost?** 62.56 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/1761663-mc420b-3-inch-motorcycle-speakers-and-amplifier-sound-system-class)

## 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

- • **Ride with Rich Sound:** Crystal-clear 3-inch speakers deliver immersive audio on every journey.
- • **Built for the Elements:** State-of-the-art weatherproofing means your soundtrack never stops, rain or shine.
- • **Plug & Play Versatility:** Aux input and handlebar mounts fit most motorcycles, ATVs, and UTVs for instant upgrade.
- • **Seamless Wireless Control:** Bluetooth connectivity lets you stream Spotify, Pandora, and more with zero hassle.
- • **Custom Volume at Your Fingertips:** Inline volume control mounts where you want for effortless sound adjustments on the go.

## Overview

The BOSS Audio Systems MC420B is a compact, weatherproof 3-inch motorcycle speaker and Class D amplifier system featuring Bluetooth wireless streaming with a 25-meter range, inline volume control, and adjustable handlebar mounts. Designed for motorcycles, ATVs, and UTVs, it delivers powerful, clear audio protected against the elements, backed by a 3-year warranty for reliable, high-quality sound on every ride.

## Description

BOSS Audio Systems MC420B 3 Inch Motorcycle Speakers and Amplifier Sound System – Class D Amplifier, Weatherproof, Volume Control, ATV UTV Compatible

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!
Review: Great sound and price! - Great quality, sound and price! Not much bass so I pair with the Boss Slim8. Perfect!

## 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. It has been sealed with the latest weatherproofing techniques to protect against a rainy forecast
- Weatherproof - The MC420B has been outfitted with the latest weatherproofing techniques for protection against the elements
- Speakers - Also included are two 3-inch chrome full range speakers. The adjustable brackets will fit handlebars from ranging from .75” to 1.25”
- Playback - A 3.5 mm Auxiliary input located on the side of the amplifier 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 | B00IBI50NK |
| Audio Driver Type | Dynamic Driver |
| Batteries | 1 12V batteries required. |
| Best Sellers Rank | #2 in Powersports Speaker Systems |
| Bluetooth Range | 25 Meters |
| Color | Silver |
| Compatible Devices | Smartphone, Tablet, MP3 Player |
| Control Method | App |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.3 4.3 out of 5 stars (7,052) |
| Date First Available | February 28, 2014 |
| Global Trade Identification Number | 00791489121842 |
| Impedance | 4 Ohms |
| Included Components | BOSS AUDIO MC420B |
| Is Discontinued By Manufacturer | No |
| Is Waterproof | FALSE |
| Item Weight | 4 pounds |
| Item model number | MC420B |
| Manufacturer | BOSS Audio Systems |
| Material | Metal |
| Maximum Range | 25 Meters |
| Model Name | MC420B |
| Mounting Type | Handlebar Mount |
| Number Of Circuits | 2 |
| Number of Batteries | 1 12V batteries required. |
| Number of Items | 2 |
| Number of Power Levels | 2 |
| Power Source | Battery Powered |
| Product Dimensions | 4.5"D x 4"W x 4"H |
| Recommended Uses For Product | Volume |
| Set Name | BOSS Audio Systems MC420B 3 Inch Motorcycle Speakers and Amplifier Audio Sound System |
| Shape | irregular shape |
| Signal-to-Noise Ratio | 85 |
| Speaker Size | 3 Inches |
| Speaker Type | Tweeter |
| Special Feature | Bluetooth |
| Specific Uses For Product | personal, gaming, business |
| Style | (2) 3" Chrome Speakers + Class D Amp |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 3 Inches |
| Surround Sound Channel Configuration | 3.0 |
| Tweeter Diameter | 3 Inches |
| UPC | 791489121842 801940118035 506087193098 012304293811 804892188439 |
| Unit Count | 1.0 Count |
| Warranty Type | Extended |
| Water Resistance Level | Water Resistant |
| Wireless Communication Technology | Bluetooth |
| Woofer Diameter | 3 Inches |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** BOSS Audio Systems
- **Connectivity Technology:** Bluetooth
- **Input Voltage:** 12 Volts
- **Speaker Maximum Output Power:** 600 Watts

## Images

![MC420B 3 Inch Motorcycle Speakers and Amplifier Sound System – Class D Amplifier, Weatherproof, Volume Control, ATV UTV Compatible - Image 1](https://m.media-amazon.com/images/I/71IxQJmm9TL.jpg)

## Available Options

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

## Questions & Answers

**Q: Has anyone tried to mount these on a Harley engine guard?  Any issues?**
A: I mounted these on the engine guard of a Yamaha V-star. It works ok. But volume and clarity much improved when I moved them to the handle bars behind the windshield. When I had them mounted lower,on the engine guard,  to much distortion at highway speeds.

**Q: Would you be willing to just sell the amp part?  Stored over the winter and mice ate through the volume control and some other main wires.**
A: Hello,

I am looking through all of our options, and I did not find the amp by itself. 

Thank You.

**Q: Well this work on my Honda 1100 with a windshield? Are they water proof?**
A: I have this system install on my 2000 Honda VT1100C3 with a windshield it has work great sound is clean and loud, I install the speakers on the engine guard, the amp on the fork bag and the volume on the tool cover.

**Q: I just installed this and one speaker is already blown!**
A: Sometimes they go out and come back in

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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!

### ⭐⭐⭐⭐⭐ Great sound and price!
*by M***R on January 18, 2026*

Great quality, sound and price! Not much bass so I pair with the Boss Slim8. Perfect!

### ⭐⭐⭐⭐ Great budget speakers! Insane bluetooth...no joke its instant. Sound is great!
*by C***M on September 17, 2019*

READ FULL REVIEW!! I have seen a lot of reviews on here about the bass and sound quality not being very good and I have to say do not let the reviews lead you astray from what these really are, great speakers at incredible price. You get great sound on a budget. The highs are crisp and mid range just as good. I was at 85 with cross wind with the volume half way and I had no problem hearing these speakers. I have stock exhaust so not incredibly loud. I agree that there is nearly no bass. But these are not $300 kuryakyn speakers or Rockford Fosgate. The install was very easy. I would recommend either having a second set of hands when mounting the speakers to the handle bars (which I did not have) or using a pliers or vice grip and bend the clips around the bars first. Wiring was a breeze. I went right into my ignition wire and turns on and off when I turn the key. Amp went under my seat. I am not kidding when i say that the bluetooth is incredible. It instantly connects to my phone withing 3 seconds of being powered on. Delivery was 2 days. Kit comes with everything you need to mount and enough wire. Took me one hour to do everything and I am not very experienced. Good luck! I recommend these speakers!

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-03-10*