Kolpin ATV Sound Box (ATV STEREO BOX) - $539.99

It combines two high-quality, marine-grade speakers with 1-1/2 cu. ft. of weather-resistant storage, all in one package. Rotomolded low-density polyethylene box. Waterproof Jensen MSR2010 stereo with amplified antenna and MP3 input. Sirius 3.0-ready AM/FM. All-molded, waterproof speakers. Coaxial with 1-1/2 tweeter. Mounts to tubular or composite racks using four U-bolts and sealing washers. Made in USA. Size: ATV STEREO BOX. - $539.99