'Sounds about right.  I have a fairly light sport bike, a Honda VTR-1000, and my KTM 690 is about 100 lb lighter: heaven for around town, and tons more comfortable.  I find the 690 suitable for easy trails, but I have a 250 for anything serious.  I use the 690 to check out places to ride the 250.  When I lean it over more than about 20 degrees going slow, the weight is really felt.  As a primary dirt bike, no way for me.  80-90% street.  But I am still a weight freak as a matter of principle.  You can save a reasonable amount of weight by replacing the muffler with a titanium one; the battery with a Shoari or similar, and a little maybe by replacing the aluminum heat shields with carbon fiber.  There is a thread somewhere about reducing the weight of the 690 to under 300 lb.  Still, it is light for it's intended purpose.