Sena 20S / 20S Evo / 30K / 50S Universal Helmet Clamp Kit with Microphones and HD Speakers.

A 20S / 20s Evo / 30K / 50S Universal Helmet Clamp Kit with HD Speakers for mounting your intercom on a second helmet . Simply click the control unit onto any other helmet that has this kit .

Kit Includes:

• Universal helmet clamp.
• Wired boom microphone.
• Wired microphone.
• Glued surface mounting adapter.
• Speaker pads. 
• HD Speakers