Rockford Fosgate RFK-HD9813M5 Harley Amplifier Install Kit

The Rockford Fosgate RFK-HD9813M5 is a motorcycle-specific amplifier installation kit for select 1998-2013 Harley-Davidson touring motorcycles. It provides the mounting hardware, heat sink, wiring harnesses, and connection accessories needed to add a compatible Rockford Fosgate amplifier without building an installation from individual parts. The amplifier is sold separately.

This kit is intended for riders upgrading a factory or compatible motorcycle audio system with amplified front and rear speaker capability. Its vehicle-specific harnessing and included fairing brackets help organize the installation around the motorcycle's existing layout. It is designed for applicable Road Glide, Street Glide, and Electra Glide models.

The RFK-HD9813M5 does not create sound on its own; it supports a system upgrade by providing the infrastructure for a compatible four-channel amplifier. It is compatible with the Rockford Fosgate M5-800X4 and TM400X4ad amplifiers. This makes it a practical foundation for a higher-output speaker system when paired with the appropriate amplifier and speakers.

Full-spec, pure crystal oxygen-free copper wiring is used to meet or exceed American Wire Gauge requirements. The kit also includes an amplifier heat sink and motorcycle-specific mounting hardware for Bat Wing and Shark Nose fairing applications. These components help create a cleaner, purpose-built installation than adapting universal hardware.

Expansion provisions are included for riders planning more than a basic front-speaker upgrade. The supplied speaker-output Y-adapters support lower-fairing, saddlebag, or Tour-Pak speaker expansion, while rear speaker harnesses are included for rear-speaker connections. This allows the kit to serve as part of a staged audio upgrade path.

Key Features

• Vehicle-Specific Fit: Designed for select 1998-2013 Harley-Davidson touring motorcycles.
• Compatible Amplifiers: Supports M5-800X4 and TM400X4ad four-channel amplifiers.
• Plug-and-Play Harnessing: Helps simplify amplifier integration with motorcycle-specific connections.
• Fairing Mounting Hardware: Includes brackets for Bat Wing and Shark Nose fairings.
• System Expansion: Y-adapters support additional lower, saddlebag, or Tour-Pak speakers.
• Rear Speaker Provision: Includes rear speaker output harnesses for expanded systems.

Design & Installation

The RFK-HD9813M5 combines full-spec PC-OFC cable, dedicated amplifier mounting brackets, threaded studs, mounting screws, harnesses, cable ties, and an amplifier heat sink. Its hardware assortment is tailored to the two Harley-Davidson fairing styles covered by the kit rather than relying on generic universal brackets. The included components are intended to support a tidy, motorcycle-focused amplifier installation.

Confirm exact motorcycle fitment and fairing style before purchase, then pair the kit with either a Rockford Fosgate M5-800X4 or TM400X4ad amplifier. Disconnect the battery negative terminal before installation and verify that the motorcycle charging system is operating properly before adding an amplifier. Use the included rear harnesses and Y-adapters only when configuring the applicable rear or expanded speaker locations.