Rockford Fosgate RFK-HDRKM5 Road King Amplifier Install Kit

The Rockford Fosgate RFK-HDRKM5 is a complete amplifier installation kit engineered for select 1998+ Harley-Davidson Road King motorcycles. It provides the mounting hardware, wiring, Bluetooth streaming input, and vehicle-specific connections needed to add a compatible Rockford Fosgate amplifier cleanly. This kit is intended for riders building a Road King audio system without assembling a separate collection of power, signal, and integration parts.

Designed around plug-and-play harnessing, the RFK-HDRKM5 helps streamline integration with compatible Road King applications. It includes an RFBTRCA Bluetooth streaming receiver, allowing a compatible Apple or Android device to serve as the music source. One-button pairing keeps the wireless setup straightforward once the system is installed.

The RFK-HDRKM5 is an installation and integration kit rather than an amplifier or speaker package, so it does not produce sound on its own. Its role is to support a properly matched amplified system with dedicated power, speaker, turn-on, and signal connections. When paired with the specified M5-800X4 amplifier and applicable saddlebag speaker kit, it provides the foundation for amplified front and rear Road King audio.

Rockford Fosgate uses 100% pure crystal-oxygen free copper (PC-OFC) cable in this kit, with full-spec cable designed to meet or exceed AWG requirements. The included amplifier mounting bracket and cover create a dedicated installation location, while the supplied harnesses are tailored to the Road King platform. A front lower expansion pigtail also supports a future lower-fairing speaker addition.

For select 2014+ Road King models, the kit is designed around the separately sold M5-800X4 amplifier and TMS69BL14 6x9-inch saddlebag kit. For select 1998-2013 Road King models, it is designed around the separately sold M5-800X4 amplifier and TMS69BL9813 6x9-inch saddlebag kit. Confirm motorcycle fitment before purchase, as Road King equipment and factory options can vary by model year.

Key Features

• Road King-Specific Integration: Purpose-built harnessing and mounting components support select 1998+ Harley-Davidson Road King applications.
• RFBTRCA Bluetooth Receiver: Streams music from compatible Apple and Android devices without requiring a separate source unit.
• One-Button Pairing: Simplifies Bluetooth device discovery and pairing during initial setup.
• M5-800X4 Compatibility: Designed for the separately sold Rockford Fosgate M5-800X4 four-channel amplifier.
• PC-OFC Cable Construction: Pure crystal-oxygen free copper cabling supports dependable current and signal transfer.
• Expansion-Ready Harnessing: Includes a front lower expansion pigtail for adding compatible lower-fairing speakers later.

Design & Installation

The RFK-HDRKM5 combines an amplifier mounting bracket, protective amplifier cover, Road King-specific harnessing, drilling templates, and installation hardware in one package. Its cable construction uses PC-OFC conductors, and the supplied hardware includes a hole saw, drill bit, fasteners, cable clamp, wire ties, alcohol wipe, and adhesion promoter. The bracket-and-cover arrangement is designed to organize the compatible amplifier installation in the motorcycle's right-side rear saddlebag area.

Use the included year-range-specific turn-on harness and drilling template for the motorcycle being fitted: 1998-2013 or 2014+ Road King. Disconnect the negative battery terminal before installation, verify that the motorcycle charging system is operating correctly, and follow the supplied installation instructions. The M5-800X4 amplifier and the correct year-specific 6x9-inch saddlebag speaker kit are required separately; confirm fitment before ordering.