23700 kmS .There's no tougher proving ground for a 600 cc sportbike than the AMA Formula Xtreme class, and considering the fact that 1 machine the CBR600RR has won every single race of the last 2 seasons, not to mention the 2004 World Supersport title and 2005 Daytona 200, need we say more? Well, other than this state-of-the-racing-art middleweight marvel simply has no equals. D30702 U300258 Cbr cbr600 cbr600r cbr600rr 600 600r sportbike zx6r zx636 636ninja