How to Connect Bluetooth to Your Motorcycle Radio
By BOSS Audio Systems | Life at Full Volume | Published: 2026-10-22
Category: How-to Guides
Pair your phone or music device with a BOSS Audio motorcycle handlebar speaker system. This guide covers Bluetooth pairing steps for MC420B and MC520B models.
Quick Answer
To stream music from your phone to a BOSS Audio motorcycle handlebar speaker system, turn on the system, activate Bluetooth pairing mode on the speakers, then select the device from your phone’s Bluetooth menu.
Before You Start: Know Your System
Both the MC420B and MC520B include Bluetooth audio streaming, but they use different amplifier classes. The MC420B uses a Class D amplifier, which is more power-efficient and runs cooler on long rides. The MC520B uses a Class A/B amplifier and adds an FM radio tuner, USB and SD ports, and a remote control. These extra features give you more playback options, but the Bluetooth pairing process is similar for both.
Step-by-Step Bluetooth Pairing
- Power On the System: Turn on your motorcycle's ignition (if required) and press the power button on the handlebar speaker control panel. Wait for the system to boot up. A common mistake is leaving the ignition off; the system may not power up without it.
- Enter Pairing Mode: Press and hold the 'BT' or 'Mode' button on the control panel until the Bluetooth indicator light begins to flash rapidly. This signals that the speakers are discoverable. If the light is solid or off, the system is not in pairing mode. Release and press again.
- Select the Device from Your Phone: Open your phone's Bluetooth settings. Look for a new device named 'BOSS Audio' or 'MC420B'/'MC520B'. Tap it to pair. If prompted, confirm or enter '0000' as the PIN. Make sure your phone's Bluetooth is on and within 30 feet of the speakers. Move closer if it doesn't appear.
- Adjust Volume and Enjoy: Once paired, use the inline volume control on the speaker cable or your phone's volume to set a comfortable level. Your music should now stream through the handlebar speakers. If the audio is distorted, lower the volume on your phone first, then increase it on the system.
Product Facts
- MC420B: Full-Range, Class D amplifier with Bluetooth Audio Streaming and Aux-In. The Class D amp draws less power from your motorcycle battery, making it a good choice for longer rides without draining the battery.
MC420B - MC520B: Full-Range, Class A/B amplifier with Bluetooth Audio Streaming, FM Radio Tuner, USB and SD ports, and Remote Control (RF). The extra ports and remote give you more ways to play music and control volume without reaching for the handlebars.
MC520B
