Precision Concepts is a high performance off-road motorcycle shop primarily known for our race-winning suspension work. In addition to our winning suspension work, we have a winning bike building shop that sponsored the American Honda Offroad Team for nearly a decade. We are best known for our hours of testing and innovation in products and suspensions that keep you in the race and on the podium. - Precision Concepts Racing for all your dirtbike suspension needs. Riverside, CA (951) 697-8488.