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"Moto-Blaster" Perfect for any Motorcycle that needs the extra BLAST to be seen and heard. Whether you're navigating the through the concrete jungle or ripping the Dunes, this horn will be noticed! It''s compact size and ease of installation makes it one of our best selling HORN for any motorcycle. 3x4"inches and has an integrated electric mini compressor. An easy install @ an AMAZING 120 Decibels.