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Product details

Advanced Specifications
  • Front Speaker Size: 6.5”
  • Rear Speaker Size: 6x9”
  • Speaker Type: 2-way coaxial (PRO series front)
  • Magnet Type (Front): Neodymium
  • Amplifier Power Output: 800W total (SounDigital EVOX platform)
  • Amplifier Channels: 4-channel
  • DSP Channels: 8-channel
  • Wiring Type: OFC (oxygen-free copper)
  • Signal Input: High-level (via LOC to DSP)
  • Integration Type: OEM head unit retained with DSP control
  • Fitment Type (Front): Direct fit (no pod modification required)
  • Weather Resistance: Yes (speaker design)
Key Features
  • High-output front speakers designed for stronger projection at highway speeds
  • Full front and rear system for increased coverage and system scale
  • DSP-controlled signal chain enables precise tuning and optimisation
  • Direct-fit front speakers eliminate need for fairing modification
  • Acoustic treatment improves clarity and reduces resonance at higher output
Compatible Touring Models
  • Street Glide models (2014–2023)
  • Street Glide Special models (2014–2023)
  • Ultra Limited models (2014–2023)
  • Ultra Classic models (2014–2023)
  • Electra Glide Standard models (2019–2023)
  • Road Glide models (2015–2023)
  • Road Glide Special models (2015–2023)
  • Road Glide Ultra models (2016–2023)
  • Road Glide Limited models (2020–2023)
Notes:
  • Designed for Harley Davidson Touring platform with front fairing speaker locations
  • Assumes OEM head unit and factory speaker output integration
  • Saddlebag lid fitment applies to Rushmore Touring models (2014–2023.5)
  • Compatibility may vary depending on fairing configuration and OEM system version
Best Suited For
  • Riders running louder exhaust systems requiring maximum front-stage projection
  • Touring bikes used for highway riding where output and presence are critical
  • Users wanting a fully tuned front and rear DSP-based system
  • Installers or experienced DIY users building a high-performance Harley audio setup
Why Choose OSCA Harley Kits

This is the highest-output configuration in the OSCA Harley range, designed for bikes where standard upgrades simply aren’t enough. The PRO-series speakers deliver stronger projection and maintain composure at higher volume, while the addition of rear 6x9s and DSP transforms the system into a properly controlled, full-range setup.

Like all OSCA Harley kits, it’s engineered as a complete system rather than a collection of parts, with a focus on signal management, component integration, and real-world performance. The result is a system that delivers consistent output, clarity, and control once installed, backed by hands-on experience rather than generic retail logic.

Installation Notes
  • Direct-fit front speakers — no modification to factory speaker pods required
  • Saddlebag lids must be replaced with included 6x9 adapter lids
  • OEM head unit retained but requires signal integration via LOC and DSP
  • DSP setup and tuning is required for correct system performance
  • Harley ECU flash tune required to correct factory EQ curve and increase signal voltage before DSP tuning
  • Dual wiring kits required to support amplifier current demands
  • Amplifier and DSP mounting solutions required depending on bike model
  • Acoustic treatment should be applied to fairing, speaker pods, and saddlebag lids
  • Proper gain structure is critical to maintain clarity at higher output levels
  • Professional installation and DSP tuning strongly recommended
Load video:

Installation Guide

This video shows the general install process used across our Harley audio kits, including amp integration, speaker replacement, and wiring.

It’s provided as a guide only. These systems require experience with wiring and Harley fitment, so we don’t recommend attempting installation without the proper knowledge or skill level.

Music You Can Hear at 110km/h

Designed specifically for Harley-Davidson motorcycles, our audio upgrade packages are engineered to deliver clear, powerful sound at highway speeds. Tuned to cut through wind, exhaust, and road noise, each system balances output, clarity, and durability for real-world riding. Every package is purpose-built for the Harley platform, ensuring seamless integration, reliable performance, and music that stays present and controlled—whether cruising through town or riding hard at 110 km/h.

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IMPORTANT: Installation & Tuning Considerations

  • All systems require a flash tune of your Harley Davidson ECU to change the source radio output voltage and modify the internal EQ curve to the appropriate settings before installation. This is available as an optional extra from Old School Car Audio here in Perth, or your experienced Harley Dealer.
  • Warning - Amplifier gain settings need to be professionally set to protect speakers at higher power ratings.
  • Consider future proofing your system by installing the 4-channel amplifier version with the DSP, in case you want to upgrade to the 4-speaker kit in the future.
  • All DSP settings need to be measured and setup utilising a professional Real-Time Analyser (RTA). This is available here at Old School Car Audio in Perth, for the ultimate sound experience on your Harley.
  • Modifications to speaker pods are required to fit the GZCF 6.5SPL speakers.
  • Contact us for more specific information on your motorbike and a customised quotation.

Old School Car Audio Workshop

To ensure reliable set-up and accurate performance from our packages, professional installation and DSP tuning are strongly recommended. Our dedicated workshop in Perth specialises in high-performance motorcycle audio, ensuring precise fitment, safe amplifier setup, and accurate acoustic tuning. Speak with our team to discuss installation options tailored to your Harley.

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