Hertz HSP1-24 A2B Harley-Davidson Audio System

The Hertz HSP1-24 A2B is a plug-and-play audio upgrade designed for Harley-Davidson motorcycles equipped with the factory audio system. Built around high-efficiency 6.5" Hertz coaxial speakers and a compact 4-channel amplifier, this system delivers significantly louder, cleaner sound while maintaining factory integration.

An included HD A2B interface module allows the system to work seamlessly with your bike’s original infotainment system while retaining key features like fader control, DSP settings, speed-sensitive volume, and navigation prompts. Designed specifically for fairing speaker locations, the system installs easily using the included plug-and-play wiring harness and maintains the factory fit and finish of your Harley.

System Features

• Complete Harley-Davidson fairing speaker audio upgrade
• Includes 6.5" coaxial speakers and 4-channel amplifier
• Plug-and-play installation with included wiring harness
• HD A2B interface retains factory infotainment features
• Designed for factory fairing speaker locations
• Engineered for OEM-style fit and finish
• Weather-resistant components built for motorcycle use
• Compatible with select 2024–2025 Harley-Davidson models
• 1-Year Manufacturer Warranty

What's Included

Hertz SX 165 NEO 6.5" Speakers
High-output SPL Show Series coaxial speakers designed for Harley fairings, featuring neodymium motor structures, water-resistant cones, and excellent sensitivity for powerful sound on the road.

Hertz SP 4.900 4-Channel Amplifier
Compact Class-D amplifier delivering up to 1000 watts RMS total power, with adjustable high-pass and low-pass filters plus bass boost tuning.

Hertz HD A2B Interface Module
Replaces the factory amplifier while maintaining full compatibility with the bike’s infotainment system, including navigation prompts, DSP profiles, and factory audio controls.

Hertz HHP 14 Wiring Kit
High-quality power and ground wiring designed for simple plug-and-play installation without cutting or modification.