Denali Soundbomb Compact Horn Mount For 21 mm-29 mm Diameter Tubes This Denali SoundBomb Compact horn mount kit allows fitment of the horn to engine guards, crash bars, or any tube 21mm-29mm in diameter. The clamp has a unique octagonal inner profile that allows the mount to securely grip a wide range of tube diameters and includes a fully rotatable mounting shelf to create a super versatile and robust horn mounting solution. Features: Adjustable grip range 21mm-29mm (0.826-1.125) Rotatable mounting shelf creates 4th axis of adjustability Accepts M8 bolt from Denali SoundBomb horns Billet aluminum with hard anodized black finish