About Us

Xtreme Tunez is a division of Audio Video Concepts LLC. Owner Shawn Markley has been in the 12 volt industry for over 27 years!  His vast knowledge has landed him at Xtreme Tunez with designing and selling some of the best sound systems for the Motorsports World!  With developing in house products, to selling some of the best name brands on the market, along with offering complete custom installation services, Xtreme Tunez is your one stop shop for side by side utv and motorcycle custom audio electronics.  Specializing in Polaris Slingshot, Polaris RZR Polaris General, Polaris Ranger, Can-Am Maverick, Yamaha YXZ, and Harley Davidson. If you have a Polaris side by side or any other side by side audio system question, we have an answer!