Sena Universal Helmet Clamp Kit with Slim Speaker Category_Boots They are custom engineered to

They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance while providing excellent engine protection for your motorcycle

Extruded liner for smooth operation

Precision machined from high grade 304 Stainless Steel

10mm steel locking pin

Exterior diameter: 105 mm

Sena Universal Helmet Clamp Kit with Slim Speaker Category_Boots They are custom engineered toThe 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.