J&R Max Power Tuning has been in business since 2011.The Owner Jay Demis has been a professional bike mechanic for over 35 years and worked for a Harley Dealer for over 14 years. Come see Jay for your parts or service and repair needs. He specializes in DYNO tuning for V-Twins. Whether your looking to build a screamer or just get the most out of what you have, he is the guy to come see. The shop is located in Rosebud MO off HWY 50.