Hertz HSP1-24 A2B 2-Speaker Fairing Kit for 2024-Present Harley
PRODUCT INFORMATION
Hertz HSP1-24 A2B 2-Speaker Fairing Kit for 2024-Present Harley
$1,903.96
$1,903.96
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Hertz HSP1-24 A2B 2-Speaker Fairing Kit for 2024-Present Harley
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Call us at (864) 334‑6131 or message our team with your bike year/model and current upgrades. We'll map the best path to louder, cleaner sound.
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Hertz HSP1-24 A2B 2-Speaker Fairing Kit for 2024-Present Harley
The Hertz HSP1-24 A2B is a two-speaker kit for 2024-Present Harley-Davidson motorcycles with factory A2B audio. The HD-A2B module feeds an SP 4.900 amplifier that powers a pair of SX 165 NEO 6.5-inch coaxial speakers. The HHP14 power and ground cable and Street Glide and Road Glide grilles are included.
2024-Present 2-Speaker Kit
An amplified two-speaker Hertz upgrade on the 2024-Present A2B system.
- HD-A2B digital interface module
- SP 4.900 + two SX 165 NEO coaxials
- HHP14 power cable, SG and RG grilles
Key Product Details
| Kit Model / SKU | HSP1-24 A2B |
| Brand | Hertz (Elettromedia) |
| Vehicle Application | 2024-Present Harley-Davidson with factory A2B audio |
| Signal Interface | HD-A2B digital interface module |
| Amplifier | Hertz SP 4.900 four-channel |
| Speakers | Hertz SX 165 NEO 6.5-inch coaxials (pair) |
| Speaker Impedance | 4Ω per speaker |
| Power Wiring | HHP14 power and ground cable |
| Grilles | Street Glide and Road Glide grilles |
| Speakers in Kit | Two |
For 2024-Present Harley-Davidson motorcycles with factory A2B audio. Verify your model, year and factory audio package before ordering.
Hertz A2B Fairing Audio for 2024-Present Harley-Davidson
The HSP1-24 A2B is the front-speaker Hertz kit for the 2024-Present A2B platform. The HD-A2B module takes the factory A2B signal into the SP 4.900, which powers two SX 165 NEO coaxials.
The SP 4.900 is a four-channel amplifier, so there is room to plan rear speakers later. Talk to us about how the kit is wired before adding to it.
HD-A2B Interface: Digital interface module for the factory A2B audio system.
SP 4.900 Amplifier: IP55 D-class, rated 160W RMS × 4 at 4Ω.
SX 165 NEO Coaxials: Two-way 6.5-inch coaxials, 4Ω, 100W continuous / 200W peak each, 96.5dB sensitivity.
What's Included and Specifications
| HD-A2B Digital Interface Module | Hertz A2B digital interface that connects the kit to the bike's factory A2B audio system. |
| Hertz SP 4.900 Four-Channel Amplifier | IP55 D-class amplifier rated 160W RMS × 4 at 4Ω, 250W RMS × 4 at 2Ω or 500W RMS × 2 bridged at 4Ω, with USS for factory head units that use speaker load detection. |
| Hertz SX 165 NEO Coaxial Speakers | 6.5-inch two-way SPL coaxials, 4Ω, 100W continuous / 200W peak, 96.5dB sensitivity, neodymium motors and water-repellent, anti-UV cones. |
| HHP14 Power and Ground Cable | Power and ground wire kit for the SP 4.900. |
| Street Glide and Road Glide Grilles | Grilles for both fairing styles are included. |
Kit contents are listed as published on the Elettromedia (Hertz) 2026 Hertz Moto price sheet. Component specifications are from Hertz product pages.
SP 4.900 Amplifier Specifications
| Amplifier Model | Hertz SPL Show SP 4.900 |
| Amplifier Type | Four-channel D-class amplifier (Hertz ADC output stage) |
| Output at 4Ω | 160W RMS × 4 channels at 14.4V |
| Output at 2Ω | 250W RMS × 4 channels at 14.4V |
| Bridged Output | 500W RMS × 2 channels at 4Ω, 14.4V |
| Total RMS Power | 1000W |
| Minimum Load | 2Ω in 4-channel mode / 4Ω bridged |
| Chassis Protection | IP55 aluminum chassis, no cooling fan, sealed power, input and speaker connections |
| Inputs | Pre-in (0.6–6 V RMS) and speaker-level in (2.2–22 V RMS) |
| Speaker Load Detection | USS (Universal Speakers Simulator) for head units with speaker load detection |
| Crossovers | Ch 1-2 high-pass / low-pass 50Hz–5kHz, Ch 3-4 high-pass 50Hz–5kHz, 12dB/octave |
| Bass Boost | 0–8dB (low-pass on only) |
| Bandwidth | 10Hz–35kHz (−3dB) |
| Signal-to-Noise Ratio | 105 dBA |
| THD | 0.02% at 100Hz, 4Ω, 70% rated power |
| Damping Factor | 200 |
| Power Supply | 11–15 VDC nominal / 6–16 VDC operating |
| Dimensions | 211.6 × 130 × 49 mm (8.3 × 5.1 × 1.9 in) |
| Weight | 2.15 kg |
SX 165 NEO Speakers
| Speaker Model | Hertz SPL Show SX 165 NEO |
| Speaker Type | 6.5-inch (165mm) two-way SPL coaxial |
| Quantity | One pair |
| Impedance | 4Ω |
| Power Handling | 100W continuous / 200W peak per speaker |
| Sensitivity | 96.5dB |
| Frequency Response | 100Hz–20kHz |
| Woofer Voice Coil | 38mm |
| Tweeter | 35mm (1.4 in) neodymium PEI dome with resettable protection circuit |
| Magnets | N38H neodymium |
| Cone | Water-repellent pressed paper with anti-UV treatment |
| Terminals | Double Faston terminals |
Recommended System Planning
The HD-A2B module handles the factory A2B signal and the HHP14 cable powers the SP 4.900. Street Glide and Road Glide grilles are both in the box.
We install 2024-Present Harley audio at our Taylors, SC shop. Call us before starting a DIY A2B install.
Gain setting matters: At 4Ω the SP 4.900 is rated for 160W RMS per channel, more than the SX 165 NEO's 100W continuous rating. Set the gains so the speakers stay inside their continuous rating.
What to Pair With the HSP1-24 A2B
Everything to run the kit is in the box. These parts help if you plan to grow the system later.
Hertz SP 4.900 Amplifier
The IP55 four-channel amplifier used in every Hertz sound pack, sold on its own.
Hertz SX 165 NEO 6.5-inch Coaxials
The fairing coaxial pair from this kit, sold separately as a replacement or spare pair.
Hertz SX 690 H 6x9 Speakers
The 6x9 three-way pair used in the 2024-Present Hertz kits, sold separately.
Motorcycle Audio Batteries
Battery upgrades for builds that run the amplifier hard. Ask us whether your charging system needs one.
Related Hertz & Motorcycle Audio Paths
Build around the right parts for a 2024-Present A2B bike.
Best Use for the HSP1-24 A2B
A first amplified upgrade on a 2024-Present Street Glide or Road Glide, keeping the factory A2B radio.
Room to Grow
The SP 4.900 is a four-channel amplifier. Talk to us about how the kit is wired before planning rear speakers.
Hertz HSP1-24 A2B FAQ
What comes in the HSP1-24 A2B kit?
The HD-A2B module, SP 4.900 amplifier, SX 165 NEO coaxial speakers, HHP14 power and ground cable, and Street Glide and Road Glide grilles.
How many speakers are included?
Two SX 165 NEO 6.5-inch coaxial speakers.
Does it fit Street Glide and Road Glide?
Street Glide and Road Glide grilles are both included. Confirm your exact model and audio package with us before ordering.
What is the HD-A2B module?
The HD-A2B is the Hertz A2B digital interface included in the kit. It connects the SP 4.900 to the factory A2B audio system on 2024-Present Harley-Davidson models.
Is the amplifier power wiring included?
Yes. The HHP14 power and ground cable for the SP 4.900 is included.
How much power does the SP 4.900 make?
Hertz rates the SP 4.900 at 160W RMS × 4 at 4Ω, 250W RMS × 4 at 2Ω and 500W RMS × 2 bridged at 4Ω, 1000W RMS total at 14.4V.
Will the amplifier work with a factory head unit?
The SP 4.900 accepts pre-amp or speaker-level input and includes USS (Universal Speakers Simulator) for head units with speaker load detection.
Are the speakers weather resistant?
Hertz SPL Show NEO speakers use water-repellent pressed-paper cones with water, humidity and anti-UV treatment, and the SP 4.900 uses an IP55-rated aluminum chassis.
Need Help Choosing?
Tell us your bike, model year and what you want to add, and we will confirm fitment and the right parts before you order.