if you have or know someone who has this bike, you need to check into the oil line upgrade to the crank bearings. my brother inlaw has lost 2 motors with locked up crank bearings. both it turns out around 15.000 miles. other than that its been a great bike for him.
On the ZRX? They had that trouble on the ZX11 same moter but when the designed the ZRX1100 the oil lines are different. Jeff has 17,000 miles and no problems, nor have I ever seen it mentioned here .....
http://zrxoa.org/forums//The ZRX is a great bike and there are lots of mods you can do [smiley=Wink.gif]