Yoshimura RM-Z250 19-25 RS-12 Stainless Full Exhaust, W/ Aluminum MufflerYoshimura RM Z250 19 25 RS 12 Stainless Full Exhaust, W Aluminum Muffler After over three years in development and testing we are pleased to announce the RS 12 is here! With the help of incredibly talented factory sponsored athletes, technicians, devoted engineers and a will to raise the bar, our RS 12 has now arrived for the Suzuki RM Z250. We considered all the details when it came to the RS 12. One look and you can see it's like nothing else on the