Hertz HSP3-14 Harley Audio Upgrade Kit for 2014–2023 Street Glide & Road Glide | Stage 3 Full Motorcycle Stereo System

If you're upgrading your 2014–2023 Harley Davidson Street Glide or Road Glide and want a complete motorcycle audio system that can be heard clearly at highway speeds, the Hertz HSP3-14 Stage 3 kit is the ultimate upgrade.

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

If your current system struggles with volume, lacks bass, or disappears at speed, this upgrade transforms your entire audio experience by upgrading both the front and rear of your motorcycle.

Fits 2014–2023 Harley Davidson Touring Models

This kit is designed for:

• 2014–2023 Harley Davidson Street Glide
• 2014–2023 Harley Davidson Road Glide
• Batwing and Sharknose fairings
• Saddlebag 6x9 speaker upgrades

⚠️ Not compatible with some CVO models — always verify fitment.

What’s Included in the Hertz HSP3-14 Kit

This is a complete plug-and-play Harley audio system engineered to work together:

• Hertz SP 4.900 4-Channel Amplifier – high-output power for full system performance
• Hertz SX 165 NEO 6.5" Front Speakers – clear vocals and projection from the fairing
• Hertz SX 690 NEO 6x9 Saddlebag Speakers – adds strong midbass and rear fill
• Hertz Saddlebag Lid Kit + Speaker Harness – designed for proper 6x9 installation
• Plug-and-Play T-Power Harness – simplifies installation without cutting wiring

This system is designed as a complete matched package for maximum output and reliability.

Why Riders Choose the HSP3-14 Stage 3 System

Motorcycle audio systems need to perform in real riding conditions — not just parked.

The HSP3-14 upgrades your entire system so your music stays loud and clear at speed.

Key benefits:

• full front and rear audio coverage
• significantly louder than factory systems
• strong midbass from 6x9 saddlebag speakers
• improved clarity at highway speeds
• plug-and-play Harley integration

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

Stage 3 Performance (Full System Upgrade)

Compared to lower-stage systems:

• Stage 1 → front speakers + amp
• Stage 2 → more power and clarity
• Stage 3 (HSP3-14) → full system with front + rear speakers

This system delivers:

• maximum overall volume
• full-range sound front to rear
• stronger bass response
• consistent performance at highway speeds

Real Harley Audio Performance (What to Expect)

With proper installation and tuning, riders experience:

• clear sound at 60–80 mph
• strong midbass from saddlebag speakers
• balanced front and rear staging
• louder and fuller sound than factory

This is where your bike starts to sound like a true high-performance audio system.

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

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Watch: 3 Mistakes I Made Purchasing a Motorcycle Stereo System
This shows how a properly installed system performs in real riding conditions.

Common Harley Audio Upgrade Applications

This kit is ideal for:

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

Build the Ultimate Harley Audio System

This is a complete system, but can be expanded further with:

• DSP tuning for precision sound control
• additional amplification
• custom fabrication

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Installation & Fitment

This system requires proper installation for best results.

Key considerations:

• saddlebag lid cut-in for 6x9 speakers
• amplifier mounting and wiring
• system tuning for balanced output
• weather protection and durability

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 and rear audio upgrade.

Will this fit my 2021 Street Glide?
Yes, this kit is designed for 2014–2023 touring models.

Is this loud enough for highway riding?
Yes, this system is built specifically for that.

Do saddlebags need to be cut?
Yes, 6x9 speakers 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 HSP3-14 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.

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