Rockford Fosgate HD9813RK-STAGE2 Stage 2 Audio Kit 2-Speaker & Amp Kit for 1998-2013 Harley-Davidson Road King motorcycles (Gen-1)
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What's Inside?
- • (2) 6"x9" Speakers
- • 4-Channel Amplifier
- • Amp Install Kit
- • Owner's Manual
Built for Road King Riders Who Want More Than Stock Sound
The Rockford Fosgate HD9813RK-STAGE2 Motorcycle Amplifiers kit is the kind of upgrade that completely transforms your ride. Designed specifically for 1998–2013 Harley-Davidson Road King models, this Stage 2 system delivers a full audio overhaul with stronger output, better clarity, and seamless factory integration. At its core is the TM400X4ad 4-channel amplifier pushing 100 watts RMS per channel, giving you clean, powerful sound across multiple speaker setups. Add in built-in Bluetooth streaming and flexible input options, and you get modern audio control without losing that classic Harley feel.
Serious Power Meets Smart Engineering and Cooling
This kit is not just about volume, it is about performance that lasts. The Class-AD amplifier design keeps power efficient while reducing strain on your bike’s electrical system, so you can ride longer with consistent output. A 3-stage thermal airflow system with dual fan cooling keeps temperatures under control even when you are pushing the system hard. CLEAN level setting makes tuning easy with built-in clip indicators, while adjustable Butterworth crossovers and Punch EQ controls let you fine-tune your sound exactly how you want it, from deep bass to crisp highs.
Rugged Build with Saddlebag Bass and Easy Installation
Built with Element Ready materials, this system is made to handle rain, dust, UV exposure, and long rides without missing a beat. The saddlebag-mounted TMS69BL9813 speakers use Santoprene suspension and VAST surround technology to deliver bigger sound and better bass response from a compact setup. Installation is just as dialed in, thanks to the included RFK-HDRK mounting system, templates, and pre-configured OFC wiring harnesses that keep everything clean and efficient. With CEA-compliant power ratings and wiring standards, you are getting performance you can trust every time you hit the road.
Frequently Asked Questions (FAQ)
- • Why Does My HD9813RK-STAGE2 Have Less Bass Than I Expected?
The kit uses 6×9-inch saddlebag speakers and a 400-watt 4-channel amplifier, so weak bass can be caused by amplifier tuning, speaker polarity, or the way the saddlebag installation is sealed. Check the installation and crossover settings before assuming the speakers are defective.
- • Why Do My Road King Speakers Sound Distorted at High Volume?
Rockford warns that changing the recommended amplifier settings can result in poor performance and speaker failure. If distortion appears as volume increases, return the amplifier to the recommended configuration and verify the input gain.
- • Why Won't the Bluetooth Receiver Reconnect to My Phone?
The included Bluetooth receiver is designed to automatically reconnect to a previously paired device when the system powers on. If reconnection fails, remove the old Bluetooth pairing and pair the phone again, while checking that another nearby device is not connecting first.
- • Why Is One Saddlebag Speaker Louder Than the Other?
Uneven output can result from a loose speaker connector, damaged wiring, incorrect polarity, or an amplifier-channel issue. Swap the left and right speaker connections to determine whether the problem follows the speaker or stays with the amplifier channel.
- • Why Does My Audio Cut Out When I Hit Bumps?
Intermittent sound on a motorcycle can be caused by a connection that is not fully secured. Check the amplifier harness, speaker terminals, ground, and battery connections, particularly if the problem appears only while riding.
- • Why Can't I Install the HD9813RK-STAGE2 in My Fiberglass Saddlebags?
The saddlebag speaker portion is designed for specific factory hard-saddlebag configurations and is not compatible with fiberglass lids. Rockford's compatibility information also distinguishes between supported Road King configurations, so the exact saddlebag construction should be confirmed before installation.
- • Why Does the Amplifier Work but I Get No Sound From the Speakers?
Start with the amplifier power and ground, then inspect the speaker harness and signal connections. Rockford's installation documentation recommends checking the complete wiring path and using a volt/ohm meter when troubleshooting installation problems.
- • Why Does My Road King Audio Sound Weak While Riding Fast?
Wind, exhaust, and road noise can make motorcycle audio difficult to hear at speed. The Stage 2 system was specifically developed for powersports use, with Rockford stating that its motorcycle systems are designed for demanding outdoor conditions and riding environments.
- • Why Can't I Add the HD9813RK-STAGE2 to My Existing Factory Audio Setup?
Compatibility depends on the exact Road King configuration. Rockford lists specific supported 1998–2013 Road King models and notes that some factory configurations require different equipment. Verify the motorcycle and saddlebag setup before connecting the kit.
- • Why Does My Installation Take Longer Than a Normal Speaker Swap?
Although the system uses a plug-and-play wiring harness and factory attachment points, installation still involves mounting the amplifier, installing the saddlebag speakers, routing wiring, and making the required connections. Rockford recommends careful planning and qualified installation if you are uncertain about the procedure.
Features:
- Precision-Engineered Stage 2 Audio Upgrade for Harley-Davidson Road King Platforms: Designed for 1998–2013 Road King models, the Rockford Fosgate HD9813RK-STAGE2 kit delivers a complete amplification and speaker solution tailored for enhanced output, durability, and seamless integration with factory motorcycle architecture
- High-Performance TM400X4ad 4-Channel Amplifier System: Produces 100 watts RMS per channel at 2Ω or 4Ω with bridged capability, ensuring powerful and clean audio delivery across multiple speaker configurations
- Element Ready Ruggedized Construction: Built to endure harsh riding environments with resistance to moisture, UV exposure, dust, and corrosion through marine-grade materials and sealed circuitry
- Class-AD Efficient Power Technology: Advanced amplifier design maximizes output while minimizing electrical load on the motorcycle charging system for stable long-duration performance
- Advanced 3-Stage Thermal Airflow Cooling System: Dual fan forced induction combined with optimized airflow channels efficiently dissipates heat to maintain consistent amplifier performance under demanding conditions
- CLEAN Level Setting Integration: Built-in clip detection indicators simplify gain matching for accurate tuning and distortion-free output without requiring external tools
- Flexible Input and Signal Integration: Accepts both line-level and speaker-level inputs with auto turn-on capability, allowing compatibility with factory and aftermarket source units
- Precision Adjustable Crossover Network: Variable Butterworth filters from 50Hz to 250Hz provide detailed frequency control for improved sound staging and speaker protection
- Punch EQ Dynamic Sound Enhancement: Integrated bass and treble boost circuits allow fine-tuning of low and high frequencies for a more customized listening experience
- Saddlebag-Mounted TMS69BL9813 Speaker System: High-output weather-resistant speakers with Santoprene suspension and VAST surround technology deliver extended cone area and improved acoustic performance
- Complete Saddlebag Installation and Wiring Solution: Includes RFK-HDRK mounting system with templates, bracket, and pre-configured OFC wiring harnesses for efficient installation and optimized space utilization
- Integrated Bluetooth Audio Streaming Module: Enables direct wireless music playback with handlebar-mounted control access for convenient operation during rides
- CEA-Compliant Performance and Wiring Standards: Meets CEA-2006 amplifier and CEA-2015 wiring specifications to ensure verified power output and reliable electrical conductivity
Specifications:
- Speaker Qty: 2
- Total Power: 400 Watts
- Amplifier Type: External
- Grille/Trim Ring Included: Yes
- Mounting Hardware: Yes
- Expansion Connector Required: (1) DEUTSCH™/Amphenol #DT06-4S
- Included In The Box
- (2) TMS69 Speakers
- (2) 1998-2013 Road King Grilles
- (1) TM400X4ad Amplifier
- (1) RFK-HDRK Amp Mounting Kit
- (1) RFBTRCA
- (1) Wiring Harness Kit
- (1) Hardware Pack
- UPC: 780687356118
- Weight: 19
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.
