Sena Universal Helmet Clamp Kit with Slim Speaker Category_Oil Changing Tools and moves up and out

and moves up and out of the way quickly and easily when entering dark tunnels

soft sealing ring for extra protection

Flange Inside Diameter: 43mm

But that's not all

MCA (Marine Cranking Amps): 308A

Sena Universal Helmet Clamp Kit with Slim Speaker Category_Oil Changing Tools and moves up and outThe Universal Clamp for Helmets with Slim Speakers is suitable for the Sena 20S EVO and 30K communication systems. Included: Helmet Clamp Set of slim speakers and speaker pads Wired boom microphone Boom Microphone Mic socks Adhesive hook and loop fasteners Note: This kit contains slim speakers that measure 32mm in diameter and 7mm thickness with a 20mW output.