---
product_id: 35626401
title: "MCBK520B Motorcycle 3 Inch Stereo Speakers and Amplifier Audio Sound System - Bluetooth 2 Channel Amplifier, Weatherproof, FM Tuner, USB, SD, Auxiliary In, ATV UTV Compatible"
brand: "boss audio systems"
price: "€ 384.04"
currency: EUR
in_stock: true
reviews_count: 8
category: "Boss Audio Systems"
url: https://www.desertcart.hr/products/35626401-mcbk520b-motorcycle-3-inch-stereo-speakers-and-amplifier-audio-sound
store_origin: HR
region: Croatia
---

# Built-in FM tuner & Bluetooth 600W max output power Weatherproof for all conditions MCBK520B Motorcycle 3 Inch Stereo Speakers and Amplifier Audio Sound System - Bluetooth 2 Channel Amplifier, Weatherproof, FM Tuner, USB, SD, Auxiliary In, ATV UTV Compatible

**Brand:** boss audio systems
**Price:** € 384.04
**Availability:** ✅ In Stock

## Summary

> 🎵 Own the road with unstoppable sound and style!

## Quick Answers

- **What is this?** MCBK520B Motorcycle 3 Inch Stereo Speakers and Amplifier Audio Sound System - Bluetooth 2 Channel Amplifier, Weatherproof, FM Tuner, USB, SD, Auxiliary In, ATV UTV Compatible by boss audio systems
- **How much does it cost?** € 384.04 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/35626401-mcbk520b-motorcycle-3-inch-stereo-speakers-and-amplifier-audio-sound)

## 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

- • **All-Weather Ready:** Advanced weatherproof design means your soundtrack never stops, rain or shine.
- • **Handlebar Friendly:** Adjustable 3-inch speakers fit handlebars from 0.75” to 1.25” for sleek, secure mounting.
- • **Ride Loud, Ride Proud:** Crystal-clear 600W stereo sound cuts through highway noise and helmet barriers.
- • **Seamless Connectivity:** Bluetooth, USB, SD, and aux inputs keep your playlist flowing from any device.
- • **Control at Your Fingertips:** Wireless remote lets you manage your music without missing a beat on the road.

## Overview

The BOSS Audio Systems MCBK520B is a compact, weatherproof 3-inch motorcycle speaker and 2-channel amplifier system delivering up to 600 watts of clear stereo sound. Featuring Bluetooth connectivity, FM tuner, USB and SD card support, and an auxiliary input, it offers versatile music options. Designed for handlebars between 0.75” and 1.25”, it includes a wireless remote and a robust 3-year warranty, making it the ultimate audio upgrade for motorcycles, ATVs, and UTVs.

## Description

Buy BOSS Audio Systems MCBK520B Motorcycle 3 Inch Stereo Speakers and Amplifier Audio Sound System - Bluetooth 2 Channel Amplifier, Weatherproof, FM Tuner, USB, SD, Auxiliary In, ATV UTV Compatible: Coaxial Speakers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Good quality sound - I can hear on my Harley with Vance and Hines pipe doing 75 mph. Base isn’t the best but has quality sound. Wires are a little short though.
Review: Great and loud and has lasted. - Great system. We can hear it clearly even at hiway speed with full face helmets. Not much bass but it was expected per reviews. Fast shipping and easy install. Update: I've had this for a couple years now and it still works great. I made a mount for the amp and attached it with the batwing mounts. That way it's covered pretty well but gets plenty of air. I use a memory stick and the FM and still works and sounds great. Speakers are on the bars and somewhat covered by the 3 pocket windshield patch. They've been thru constant 95° days, cold(38°) rides and downpours. No complaints. As far as draining the battery, wire it thru a relay that's run thru a circuit that shuts down completely when you shut off the engine, not just straight thru the battery.

## Features

- Bluetooth - use your smartphone or MP3 player and Get access to a vast library of your favorite music, plus plug into apps like Spotify and Pandora, wirelessly. The 3.5 mm aux input is also compatible with the audio out of your devices
- Weatherproof - the MCBK520B has been outfitted with the latest weatherproofing techniques for protection against the elements. Rain or snow, take your music wherever you go
- Speakers - The two 3-inch matte black full range speakers have adjustable brackets that will fit handlebars ranging from .75” to 1.25”
- Amplifier - the 2 Channel Bluetooth, compact, Weatherproof, class A/B amplifier is small enough for an out of the way Installation
- Fm tuner - tune into FM radio station for up to date music, Sport, news, weather and other entertainment
- USB/SD - The USB and SD ports support up to 32 GB of memory so that when you hit the road, your music can follow
- Aux in - compatible with the audio output from smartphones as well as MP3 players. Just plug in and start playing
- Remote control - a convenient wireless multi-function remote control lets you control your music wirelessly
- Warranty - 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 | B01DT4P634 |
| Additional Features | Amplified, Bluetooth, Weatherproof |
| Age Range Description | Adult |
| Antenna Location | For Music Players |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Battery Average Life | 5 Hours |
| Best Sellers Rank | #114 in Powersports Speaker Systems |
| Brand | BOSS Audio Systems |
| Built-In Media | Remote control, Brackets, User manual |
| Color | Black |
| Compatible Devices | MP3 Player, Phones, Smartphone, Television |
| Compatible with Vehicle Type | ATV, Golf Cart, Motorcycle, UTV |
| Connectivity Protocol | Bluetooth |
| Connectivity Technology | Auxiliary , Bluetooth |
| Control Method | Remote |
| Controller Type | Remote Control |
| Customer Reviews | 4.1 out of 5 stars 1,025 Reviews |
| EU Spare Part Availability Duration | 3 Years |
| Enclosure Material | Platinum |
| Frequency Response | 15 KHz |
| Global Trade Identification Number | 00791489124379 |
| Impedance | 4 Ohms |
| Input Voltage | 12 Volts |
| Is Waterproof | Yes |
| Item Dimensions D x W x H | 5"D x 3"W x 1.5"H |
| Item Height | 3 inches |
| Item Type Name | BOSS Audio Systems MCBK520B Motorcycle Speaker and Amplifier Sound System - Bluetooth, Weatherproof, 3 inch Speakers, 2 Channel Amplifier, FM Tuner, USB, SD, Auxiliary In, Great For 12 Volt Vehicles |
| Item Weight | 4.5 Pounds |
| Manufacturer | BOSS Audio Systems |
| Model Name | MCBK520B |
| Model Number | MCBK520B |
| Mounting Type | Handlebar Mount |
| Number Of Circuits | 2 |
| Number of Audio Channels | 3.0 |
| Number of Batteries | 1 CR2 batteries required. |
| Number of Items | 4 |
| Number of Power Levels | 1 |
| Power Source | Battery Powered |
| Speaker Maximum Output Power | 600 Watts |
| Speaker Size | 3 Inches |
| Speaker Type | Outdoor |
| Specific Uses For Product | For Motorcycles, Scooters, ATVs, and Golf Carts, as well as for Music Players during Road Trips and Off-Road Adventures |
| Subwoofer Connectivity Technology | Wireless |
| Subwoofer Diameter | 3 Inches |
| Tweeter Diameter | 1 Inches |
| UPC | 791489124379 |
| Unit Count | 4.0 Count |
| Warranty Description | BOSS Audio Systems provides a powerful 3-year platinum online dealer warranty so long as the purchase is made through Amazon. |
| Warranty Type | Extended |
| Water Resistance Level | Water Resistant |
| Wireless Technology | Bluetooth |
| Woofer Diameter | 3 Inches |

## Product Details

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

## Images

![MCBK520B Motorcycle 3 Inch Stereo Speakers and Amplifier Audio Sound System - Bluetooth 2 Channel Amplifier, Weatherproof, FM Tuner, USB, SD, Auxiliary In, ATV UTV Compatible - Image 1](https://m.media-amazon.com/images/I/81oBsrZawaL.jpg)

## Available Options

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

## Questions & Answers

**Q: The blue tooth broke on it how do I fix it**
A: Hello,
Please contact the Boss Audio Technical Support Team via telephone regarding the issue you are experiencing, so we may further assist you. You may find our phone number on our company website. Scroll to the bottom of the home page and under "ENGAGE WITH US," click on "Contact Us."
Thank you!

**Q: Is this water proof?**
A: The MCBK520B is weatherproof, both speakers and amp are able to resist the penetration of water to some degree but not entirely.

**Q: How long are the speaker wires**
A: Hello,
About 36 inches.
Thank you.

**Q: Does it play fm radio & have a built in antenna?**
A: Yes, the MCBK520B features a built-in radio and antenna.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality sound
*by A***R on November 20, 2025*

I can hear on my Harley with Vance and Hines pipe doing 75 mph. Base isn’t the best but has quality sound. Wires are a little short though.

### ⭐⭐⭐⭐⭐ Great and loud and has lasted.
*by S***6 on May 13, 2018*

Great system. We can hear it clearly even at hiway speed with full face helmets. Not much bass but it was expected per reviews. Fast shipping and easy install. Update: I've had this for a couple years now and it still works great. I made a mount for the amp and attached it with the batwing mounts. That way it's covered pretty well but gets plenty of air. I use a memory stick and the FM and still works and sounds great. Speakers are on the bars and somewhat covered by the 3 pocket windshield patch. They've been thru constant 95° days, cold(38°) rides and downpours. No complaints. As far as draining the battery, wire it thru a relay that's run thru a circuit that shuts down completely when you shut off the engine, not just straight thru the battery.

### ⭐⭐⭐⭐ I very much suggested this especially for the price
*by C***N on March 28, 2021*

Over all the system is amazing, I do have a few gripes with it 1. The auto play- the auto play is extremely stupid and is constantly annoying me and everyone around me, I go to turn on my bike and before I can even start it my radio is blaring Anime songs or ICP or whatever it decides it likes in my library that day at full blast 2. Volume control- this ones little and not a big deal if you’re like me and like your music loud, but because of the multiuse buttons on both the remote and the amp the skip and Volume up button is the same button, for some reason skip/back got precedents over Vol up/down so you have to hold to turn the volume up or down and you wind up going too far or not enough OR you wind up skipping your favorite song when you meant to turn it up But those two gripes out of the way, it’s an amazing system, it’s loud, it’s easy to install, and WELL worth the money I can hear it over MY straight piped 250, my fathers Vstar 1100 with cobra pipes, AND my full face helmet, some people have complained about the Bluetooth but they must’ve fixed that with my system because a few months later and it still works

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-02*