New for 2022 Jet Audio System upgrade for any Exhilarator boat. Rock out while your tubing behind America's favorite go cart of the water, Exhilarator 109. The system has four high powered speakers and the jets ones are pointing backwards for the tube passengers. System is marine rated to last. Speaker jets are molded fiberglass and bolted on the deck. The speakers have LED lighting for that afterburner jet engine look.