Hogtunes QC ULTRA 4-RM – QC 225-RM 4-Channel Amp & 6.5" Front + Rear Speaker Kit (Ultra 2014–2023)
Hogtunes QC ULTRA 4-RM — QC 225-RM 4-Channel Amp & 6.5" Front + Rear Speaker Kit (2014–2023)
The Hogtunes QC ULTRA 4-RM is a complete four-speaker audio upgrade designed specifically for 2014–2023 Harley-Davidson Ultra Limited, Ultra Classic and Tri Glide Ultra models. With a QC 225-RM Class D amplifier powering 462F-RM 6.5" front speakers and 462R-RM 6.5" rear speakers, this kit delivers a clean, balanced boost in mids, clarity and overall output while retaining an OEM appearance.
Featuring a true plug-and-play harness designed for Ultra rear pods, this system installs cleanly without cutting or modifying factory wiring.
Key Features
- QC 225-RM 4-Channel Class D amplifier tuned for Harley-Davidson charging systems.
- 462F-RM 6.5" front speakers designed for Rushmore Batwing fairings.
- 462R-RM 6.5" rear speakers that fit perfectly in Ultra OEM rear pods.
- Complete 4-speaker upgrade delivers balanced front and rear performance.
- Plug-and-play Ultra harness — no cutting, no splicing, no complications.
- Optimised for factory Harley radios but works with aftermarket head units.
- On-bike acoustic tuning ensures clarity at highway speed.
- OEM look with noticeably improved audio output.
Why Riders Choose This Kit
- Single amplifier powers all four speakers for a clean, simple installation.
- Purpose-built for Ultra models with dedicated rear-pod wiring.
- Strong midrange & vocal clarity ideal for touring riders.
- No tuning required – just plug in and ride.
What’s Included
- 1 × QC 225-RM 4-Channel Class D Amplifier
- 1 Pair 462F-RM 6.5" Front Speakers
- 1 Pair 462R-RM 6.5" Rear Speakers
- Ultra-specific plug-and-play wire harness
- Amplifier mounting hardware
- All required installation hardware
- Installation Manual
Fitment
- 2014–2023 Ultra Limited – FLHTK
- 2014–2023 Ultra Classic – FLHTC
- 2014–2023 Tri Glide Ultra – FLHTCUTG
Technical Notes
- No radio re-flash is required for the system to operate correctly.
- Class D amplifiers may reduce FM reception — normal behaviour across all brands.
- For best FM performance, always use the factory external antenna.
Specifications
| Total System Power | QC 225-RM 4-Channel Amplifier |
| Front Speakers | 462F-RM – 6.5" |
| Rear Speakers | 462R-RM – 6.5" |
| Amplifier Model | QC 225-RM 4-Channel |
| Wiring | Ultra-specific plug-and-play harness |
Recommended Use
- Ideal full-system upgrade for Ultra riders wanting balanced front/rear performance.
- Perfect OEM speaker replacement with cleaner output and more volume.
- Works with both factory radios and aftermarket head units.
Shipping
Australia Shipping:
- Under $500 → $19.95
- $500–$2,500 → $14.95
- Over $2,500 → FREE
- Bulky items → +$24.95 surcharge (waived over $2,500)
Fast dispatch from Brisbane. Same-day shipping on in-stock orders before 1pm AEST.
Return policy
Change-of-mind returns: We accept returns within 7 days of delivery on unused, unopened products in original sealed packaging. Restocking fees apply (20–30%). Return shipping is the customer’s responsibility.
No returns on opened audio gear, installed items, custom orders, or special-order products. Please check fitment carefully before installing.
Faulty or incorrect items: If you experience an issue, contact us with photos/video and your order number. We’ll assess the claim and arrange repair, replacement, or refund for verified faults under the Australian Consumer Law.
Fitment assistance: If you’re unsure about compatibility, reach out before ordering—we’re happy to help.