Thanks for the input! I was under the impression that the Versys and 650R motor were exactly the same, but with a slightly different tune in that the Versys makes more power down low where as the 650r needs to be revved out. Either way, I'm sure a tune/power commander would make them identical. Also, coming from a thumper...it's all about the down low torque!
Also, the versys forums seem refined and focused more on the bike, where as the 650R was more of a sportbike in general forum (with a 650R section) with more about wheelies and knee down than the bike itself.
EDIT: Looks like the 650R has different cams as well. From wiki: "The Versys's 650 cc liquid cooled, four-stroke parallel-twin engine has been retuned for more bottom-end and mid-range torque. This is achieved with different camshafts and fuel injection mapping. These changes cause peak torque to occur at a lower engine speed and provide better throttle response in the 3000 to 6000 rpm range. In addition a balance tube has been added between the exhaust headers to smooth out power delivery. Power is 59.4 hp @ 8,400 rpm, compared with the Ninja's 65.7 hp @ 8,400 rpm. Torque is 42 ft·lb, compared with the Ninja's 45.5 ft·lb"
In a bike as light as mine I don't need the top end power because 120mph on a dirtbike is more than enough.
Last edited by geek; 12-15-2011 at 10:58 AM.