660 into one cylinder? You need to learn to keep the front wheel down.
I tell you a story... I went on a ride on my XT660X with 6 of my mates all on sport bikes, GSXR, Ninja's, Yamaha R6, Honda RR's and similar. We decided to take a nice scenic sets of B roads from Richmond to Box Hill, very few straight lines just twisted roads corner to corner.
The bike was quite new in 2004 and when I arrived at Box Hill, some man approached me and asked me so how do these new XT's fair on the roads?
Well within the next 2 minutes as I was taking my helmet and gloves off, the 6 friends all pulled in in the car park shaking their heads and I told this guy see that lot? We all started together in Richmond less than an hour ago! They just caught up with me now