The Hertz HSP3-24 A2B Base is a complete plug-and-play audio upgrade designed for Harley-Davidson motorcycles equipped with the factory Base audio system. This system combines high-output Hertz 6x9" saddlebag speakers, 6.5" fairing speakers, and a powerful 4-channel amplifier to deliver dramatically louder, clearer sound while maintaining factory integration.

An included A2B interface module allows the system to integrate seamlessly with the bike’s original electronics while retaining factory infotainment features such as volume control, EQ profiles, and navigation prompts. Every component is engineered for motorcycle durability, with weather-resistant materials designed to handle the rigors of the road.

With OEM-style fitment and plug-and-play installation hardware included, the HSP3-24 system provides a major sound upgrade while keeping the factory look and functionality of your Harley.

System Features

• Complete Harley-Davidson audio upgrade package
• Includes 6x9" rear speakers, 6.5" front speakers, and 4-channel amplifier
• Designed for motorcycles with factory Base audio systems
• Plug-and-play installation with included wiring harnesses
• A2B interface retains factory infotainment features
• Weather-resistant components built for motorcycle use
• Designed for fairing and saddlebag speaker locations
• Compatible with select 2024 Harley-Davidson models
• 1-Year Manufacturer Warranty

What's Included

Hertz SX 690 H 6x9" Speakers
High-output 3-way coaxial speakers designed for Harley saddlebag lids with weather-resistant construction and excellent sensitivity.

Hertz SX 165 NEO 6.5" Speakers
High-efficiency fairing speakers with neodymium motors and durable materials designed for motorcycle environments.

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

Hertz HD A2B Interface Module
Maintains full factory system functionality including infotainment controls, speed-sensitive volume, and navigation prompts.

Hertz HD24H Saddlebag Lid Kit
Includes saddlebag speaker lids, grilles, and installation hardware.

Hertz HHP 14 Wiring Kit
High-quality power and ground wiring designed for quick plug-and-play installation.