White knukle performance has their exaust complete. Two different styles one race and one trail. You actually gain a couple of HP over stock dynoed rx1 of 144, Check it out, Cant say I like the price though!!!http://www.whiteknuckleperformance.com/Yamaha.htm (http://www.whiteknuckleperformance.com/Yamaha.htm)

I think we can expect all the aftermarket parts for the rx1 to be over priced for a couple of years