I installed the system in my RZR about 8 months ago. My wife and I listen to Sirius XM via Bluetooth connection from my phone App to the Traxx Intercom. Awesome! When either one of us talk the music is instantly muted and we here each other perfectly. I have the option to add a vehicle-to-vehicle radio and antenna later down the line when I'm ready.
Used this for the first time at King Of The Hammers, having awesome sounding music as we ripped around the desert to spectate the race was so cool! Highly recommend.