MOST50 Amp Retention Interface - GM 2014-2021

This vehicle-specific add-on amplifier interface is designed for use when replacing the factory radio with an aftermarket unit. It allows you to retain the factory BOSE® amplifier in select GM vehicles, ensuring your upgraded radio integrates seamlessly with the existing audio system. The interface also preserves the factory balance control and features a Micro “B” USB port for easy updates.

• Add-on amplifier retention interface
• Retains the factory BOSE® amplifier in select GM vehicles
• Retains balance
• Micro “B” USB updatable
• 1-year limited warranty

Note: Metra recommends an AXGM interface for plug-n-play ease.

• MOST50 interface
• T-harness
• Jumper harness

Refer to our Vehicle Fit Guide for up-to-date vehicle-specific applications