Hogtunes QC ULTRA 4-RM – QC 225-RM 4-Channel Amp & 6.5" Front + Rear Speaker Kit (Ultra 2014–2023)
$1,435.00 AUD
SKU: QCULTRA4RM
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.
Who This Is For
- Owners of 2014–2023 Ultra Limited, Ultra Classic or Tri Glide Ultra models upgrading front and rear speakers together.
- Riders who want one kit – amplifier, four speakers and harness – instead of sourcing parts separately.
- Installations where nothing should be cut or spliced, and no radio re-flash is wanted.
- Touring riders after stronger midrange and vocal clarity while keeping the OEM look.
- FM listeners should note Class D amplifiers may reduce reception; retain the factory external antenna.
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.
Related collections
This part is listed in: All 2014–2023 Touring Audio · Complete Audio Systems · Wild Boar / Hogtunes – Complete Kits · Fairing Speakers
Australia Shipping:
- Under $500 → $19.95
- $500–$2,500 → $14.95
- $2,500 and above → FREE
- Bulky items → +$25 surcharge (waived once your order reaches $2,500)
Fast dispatch from Brisbane. In-stock orders placed before 1pm AEST usually ship the same business day.
Change of mind: Request a return within 30 days of delivery. The product must be unused, unopened and in its original sealed packaging, valued at $50 or more, and you'll need an RMA number from us before sending anything. Return freight is yours, and a restocking fee of up to 15% may apply – we'll confirm any fee before the return is accepted.
Not returnable for change of mind: opened, installed or test-fitted items, special-order and custom products, custom harnesses, completed tuning, gift cards and items under $50.
Fitment: If we confirmed fitment in writing based on accurate bike details and it doesn't fit, we'll put it right and cover reasonable freight. Not sure? Ask us before you order – we're happy to help.
Faulty, damaged or wrong item: Contact us first with your order number. Faults follow our RMA and warranty process, and none of this affects your rights under the Australian Consumer Law.