# SENA CB/Audio 20S Helmet Clamp Kit

-   Communicate with the CB radio built into the onboard audio system using the clamp kits microphone. Simply push the PTT button connected to a Harley-Davidson motorcycle to say something through the CB radio.
-   All sounds (including CB radio, GPS navigation or FM radio) from the onboard audio system can be mixed with 20S sound sources (intercom, MP3 music, phone etc.) This 20s clamp kit can connect to Harley-Davidson onboard audio system by the adaptor cable.
-   You can use the CB/Audio Helmet Clamp with the 20S main module. Without the 20S main module, you can have the helmet clamp with the clamp cover adaptor attached and only use the CB radio and onboard audio system.
-   Comes with 2 microphones included (wired boom mic and fixed boom mic)

Communication and protection in a single package — the CB/Audio 20S Helmet Clamp Kit represents Sena's most seamless integration of smart helmet technology and real riding safety. Communicate with the CB radio built into the onboard audio system using the clamp kits mic. All sounds (including CB radio, GPS navigation or FM radio) from the onboard audio system. You can use the CB/Audio Helmet Clamp with the 20S main module. Without the 20S main modul. The Harman Kardon speaker system delivers premium audio clarity for calls, music, and navigation while the integrated Mesh Intercom keeps your group connected without pairing frustration. At The Helmet Shop, Sena smart helmets represent the future of connected riding — integrated communication that disappears into the ride. Backed by Sena's warranty.

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## Details

- **Price:** 129.0 USD
- **Vendor:** SENA
- **Type:** Accessories - Bluetooth

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Honda Goldwing | 129.00 USD | In stock |
| Harley-Davidson | 129.00 USD | In stock |

## Images

- SENA CB/Audio 20S Helmet Clamp Kit
- SENA CB/Audio 20S Helmet Clamp Kit

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> Source: [The Helmet Shop](https://helmetshop.com/products/cb-audio-20s-helmet-clamp-kit)
> Updated: 2026-06-03