Chino, Calif. – August 25, 2010 – The 2011 Suzuki RM-Z450 is here, and the race proven Yoshimura RS-4 exhaust is now available for these awesome machines. The RS-4 is the same exhaust that helped power Yoshimura racer Ryan Dungey to the 2010 Supercross championship, so you know it delivers professional level performance. The RS-4 is [...] Continue Reading





