---
product_id: 267202474
title: "BOSS Audio Systems MC420B Motorcycle Speaker System – Class D Compact Amplifier, 3 Inch Weatherproof Speakers, Volume Control, Great for ATVs, Motorcycles and All 12 Volt Vehicles"
brand: "boss audio systems"
price: "R$2776"
currency: BRL
in_stock: true
reviews_count: 8
category: "Boss Audio Systems"
url: https://www.desertcart.com.br/products/267202474-boss-audio-systems-mc420b-motorcycle-speaker-system-class-d-compact
store_origin: BR
region: Brazil
---

# Bluetooth wireless connectivity 3-inch full-range speakers Advanced weatherproof design BOSS Audio Systems MC420B Motorcycle Speaker System – Class D Compact Amplifier, 3 Inch Weatherproof Speakers, Volume Control, Great for ATVs, Motorcycles and All 12 Volt Vehicles

**Brand:** boss audio systems
**Price:** R$2776
**Availability:** ✅ In Stock

## Summary

> 🎵 Amplify your adventure—sound that rides with you!

## Quick Answers

- **What is this?** BOSS Audio Systems MC420B Motorcycle Speaker System – Class D Compact Amplifier, 3 Inch Weatherproof Speakers, Volume Control, Great for ATVs, Motorcycles and All 12 Volt Vehicles by boss audio systems
- **How much does it cost?** R$2776 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/267202474-boss-audio-systems-mc420b-motorcycle-speaker-system-class-d-compact)

## 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 the Soundwave:** Seamlessly stream your favorite playlists via Bluetooth from any smartphone or MP3 device—wire-free freedom on the go.
- • **Custom Volume Control:** Inline volume knob lets you fine-tune your soundtrack with ease, mounted wherever you need it most.
- • **Built for the Elements:** State-of-the-art weatherproofing ensures your music never stops, rain or shine—because your ride deserves resilience.
- • **Universal Handlebar Fit:** Adjustable brackets fit handlebars from 0.75” to 1.25”, perfect for motorcycles, ATVs, and UTVs—upgrade your ride’s vibe instantly.
- • **Power-Packed Performance:** Class D compact amplifier delivers crisp, powerful audio without bulk, engineered for all 12V vehicles.

## Overview

The BOSS Audio Systems MC420B is a compact, weatherproof motorcycle speaker system featuring 3-inch chrome full-range speakers paired with a Class D amplifier. Designed for 12V vehicles including motorcycles, ATVs, and UTVs, it offers Bluetooth wireless streaming, a 3.5mm auxiliary input, and an inline volume control for personalized sound management. Its adjustable handlebar mounts fit a wide range of vehicles, backed by a 3-year platinum warranty for reliable, high-quality audio on every ride.

## Description

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

Review: Excellent ! - As expected
Review: Fit to my sofital - Nice sound

## 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
- Amplifier - 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 |
| Batteries | 1 12V batteries required. |
| Best Sellers Rank | #18,399 in Electronics ( See Top 100 in Electronics ) #4 in Motorcycle Speaker Systems |
| Color | Silver |
| Colour | Silver |
| Compatible devices | Smartphone, Tablet, MP3 Player |
| Control method | App |
| Customer Reviews | 4.2 4.2 out of 5 stars (11,635) |
| Date First Available | 17 February 2014 |
| Impedance | 4 Ohms |
| Included components | BOSS AUDIO MC420B |
| Input voltage | 12 Volts |
| Is waterproof | FALSE |
| Item Weight | 1.81 Kilograms |
| Item model number | MC420B |
| Item weight | 1.81 kg |
| Material | Metal |
| Maximum range | 25 Meters |
| Model name | MC420B |
| Mounting type | Handlebar Mount |
| Number of Items | 2 |
| Other display features | Wireless |
| Power source | Battery Powered |
| Product dimensions | 7.6D x 8.9W x 3.8H centimeters |
| Recommended uses for product | For Music Players |
| Speaker size | 3 Inches |
| Speaker type | Outdoor |
| Special features | Bluetooth |
| Subwoofer diameter | 3 Inches |
| Surround sound channel configuration | 3.0 |
| Unit count | 2 Count |
| Wireless communication technologies | Bluetooth |

## Product Details

- **Audio output mode:** Stereo
- **Brand:** BOSS Audio Systems
- **Connectivity technology:** Bluetooth
- **Frequency response:** 15 KHz
- **Speaker maximum output power:** 600 Watts

## Images

![BOSS Audio Systems MC420B Motorcycle Speaker System – Class D Compact Amplifier, 3 Inch Weatherproof Speakers, Volume Control, Great for ATVs, Motorcycles and All 12 Volt Vehicles - 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

### ⭐⭐⭐⭐⭐ Excellent !
*by J***H on 1 April 2025*

As expected

### ⭐⭐⭐⭐⭐ Fit to my sofital
*by M***I on 30 October 2019*

Nice sound

### ⭐ Boss speakers
*by S***N on 30 November 2025*

Speakers not working

## Frequently Bought Together

- BOSS Audio Systems MC420B 3 Inch Motorcycle Speakers and Amplifier Audio Sound System – Class D Compact Amplifier, Weatherproof, Volume Control, ATV UTV Compatible, For Stereo, Tweeters
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**Shop now:** [https://www.desertcart.com.br/products/267202474-boss-audio-systems-mc420b-motorcycle-speaker-system-class-d-compact](https://www.desertcart.com.br/products/267202474-boss-audio-systems-mc420b-motorcycle-speaker-system-class-d-compact)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-03-01*