Hertz HSP3-13 Harley Audio Upgrade Kit for 1998–2013 Street Glide & Road Glide | Stage 3 Full Bagger Audio System

If you're upgrading your 1998–2013 Harley Davidson Street Glide or Road Glide and want a complete motorcycle audio system that can be heard clearly at highway speeds, the Hertz HSP3-13 Stage 3 kit is the ultimate upgrade.

This is a full Harley bagger audio system designed to replace factory sound with a powerful, high-output setup that delivers loud, clear music while riding.

If your current system struggles with volume, lacks bass, or fades out at speed, this Stage 3 upgrade solves that problem by upgrading both the front and rear of your motorcycle.

Fits 1998–2013 Harley Davidson Touring Models

This kit is designed for:

• 1998–2013 Harley Davidson Street Glide
• 1998–2013 Harley Davidson Road Glide
• Fairing speaker locations (front)
• Saddlebag speaker upgrades (rear 6x9)

Plug-and-play integration allows for clean installation without major modifications.

What’s Included in the Hertz HSP3-13 Kit

This is a complete front + rear audio system designed to work together:

• Hertz High-Output Motorcycle Amplifier – delivers the power needed to drive the entire system
• Hertz 6.5" Front Speakers – designed for clarity and projection in the fairing
• Hertz 6x9 Saddlebag Speakers – adds strong midbass and rear fill
• Plug-and-Play Wiring Harnesses – simplifies installation without cutting factory wiring
• Mounting Hardware & Integration Components – ensures proper fitment

Each component is engineered to create a balanced, high-output motorcycle audio system.

Why Riders Choose the HSP3-13 Stage 3 System

Motorcycle audio systems must overcome wind noise, engine noise, and open-air riding conditions.

The HSP3-13 solves this by upgrading the entire system — not just one part.

Key benefits:

• full front and rear audio coverage
• significantly louder than factory systems
• improved clarity at highway speeds
• strong midbass from 6x9 saddlebag speakers
• system designed to work together

This is one of the most popular full Harley audio upgrades we install at our shop in Mentor, Ohio.

Stage 3 Performance (Full System Upgrade)

Compared to lower-stage upgrades:

• Stage 1 → front speakers + amp
• Stage 2 → more power and clarity
• Stage 3 → full system (front + rear speakers + amplification)

This system delivers:

• louder overall volume
• improved sound staging
• better bass response
• consistent sound at speed

Real Harley Audio Performance (What to Expect)

With proper installation and tuning, riders experience:

• clear music at highway speeds
• strong midbass from saddlebag speakers
• balanced sound front to rear
• louder, fuller audio system

This is the closest you get to a true “car audio experience” on a motorcycle.

See Real Harley Audio Builds

View Our Harley Audio Installations 

See real-world bagger audio systems built and installed by our team.

Watch Real Harley Audio Performance

Watch: Hertz Harley Davidson Installation explained
This shows what a properly installed Stage 3 system sounds like on the road.

Common Harley Audio Upgrade Applications

This kit is ideal for:

• full Harley audio system upgrades
• Street Glide bagger audio builds
• Road Glide stereo systems
• riders who want maximum volume and performance

Build the Ultimate Harley Audio System

This is a complete system — but can still be expanded with:

• DSP tuning for advanced sound control
• additional amplification
• custom fabrication and enclosures

Browse Motorcycle Speakers for Harley Audio Systems 

Motorcycle Stereo Systems Explained 

Installation & Fitment

This system requires proper installation and tuning for best performance.

Key considerations:

• saddlebag speaker installation (6x9 cut-ins)
• amplifier mounting and wiring
• system tuning for balanced output
• ensuring proper weather protection

Professional installation is strongly recommended.

Professional Harley Audio Installation in Mentor, Ohio

Stereo Installs specializes in Harley Davidson audio systems, bagger upgrades, and full motorcycle stereo builds.

Stereo Installs
7471 Tyler Blvd
Mentor, Ohio

Call: (440) 525-2001

Serving Mentor, Cleveland, Willoughby, Eastlake, and Northeast Ohio.

Motorcycle Audio Installation in Mentor Ohio

Frequently Asked Questions

Is this a complete system?
Yes, this is a full front + rear audio upgrade.

Will this fit my 2012 Street Glide?
Yes, this kit is designed for 1998–2013 Harley touring models.

Is this loud enough for highway speeds?
Yes, this system is designed specifically for that.

Do I need to modify my saddlebags?
Yes, 6x9 speakers typically require saddlebag lid modification.

Can this system be expanded further?
Yes, with DSP tuning and additional upgrades.

Upgrade Your Harley Audio System

If you're ready for a complete motorcycle audio system that delivers real performance while riding, the Hertz HSP3-13 Stage 3 kit is the ultimate upgrade.

Not sure if this is the right system for your bike? Call us or request a quote and we’ll help design the perfect setup.

Shop Motorcycle Audio Systems 

Get a Motorcycle Audio Installation Quote