Fitment Note:
This amplifier is not for individual sale and can only be purchased with the HD24-STG2 or HD24-STG3 Kits. 2023.5+ Harley-Davidson models must have the latest Skyline OS software (ending in 4125D) installed before adding the TMA-1000X4i amplifier. The amplifier will also need to be updated and tuned.
If you’re unsure, reach out. We deal with this every day.

Overview

If you’re upgrading audio on a 2024+ Street Glide or Road Glide, the amplifier is what makes the whole system come alive.

The Rockford Fosgate TMA-1000X4i is a 1,000-watt, 4-channel amplifier built specifically for the new Skyline OS platform. It’s designed to integrate directly into the factory system without needing to flash the radio.

This is the same amplifier used in the HD24 Stage kits and is the go-to option for riders who want real power and clean output from their system.

What You’re Getting

This is a compact, high-output amplifier designed for 2024+ Harley touring models.

You’re getting:

• 1,000-watt 4-channel digital amplifier
• Built-in A2B interface for direct factory integration
• Integrated DSP for system control and tuning
• Bluetooth connectivity through the RF Connect app
• Compact chassis designed for motorcycle applications

It’s built to be the foundation of a proper Harley audio upgrade.

How It Performs

This is where the difference is made.

Adding this amplifier gives your system the power it needs to stay clear and controlled at higher volume. You get stronger output, better speaker control, and a noticeable improvement in overall sound quality.

It’s not just about being louder. It’s about having clean, usable power when you’re actually riding.

Installation

This amplifier is designed to work with the factory Skyline OS system using a direct A2B connection.

When paired with the RFK-HD24 installation kit, it becomes a true plug and play setup with no radio flashing required.

Everything is built to integrate cleanly into the bike without modifying factory wiring.

Built for Real Use

This amplifier is built for the conditions these bikes see every day. It’s water resistant, vibration resistant, and designed to handle heat without performance drop-off.

The compact design also allows it to fit cleanly into factory locations without taking up unnecessary space.

Why Buy From Us

We’ve been doing this for over 30 years and have completed over 2,800 Harley installs.

If you have questions about how this fits into your system or what you need to complete your setup, you’re talking to people who work on these bikes every day.

What’s Included

• (1 ea) TMA-1000X4i 4-Channel Amplifier

Quick Questions

Q: Will this work on my 2024 Street Glide or Road Glide?
A: Yes. This amplifier is built specifically for 2024+ Harley touring models with Skyline OS.

Q: Do I need anything else to install this?
A: Yes. You’ll need the RFK-HD24 installation kit to properly install and integrate this amplifier.

Q: Do I need to flash my radio?
A: No. This amplifier is designed to work with the factory system without flashing.