Most true dirt bikes like the KDX did not come with a title from the factory. In some states it is easy to get a title on a dirt bike and in some it is not. If you plan to trailer it to a riding spot then you should be fine without one, but here we some times need to ride on county roads to connect trails and a title is much preferred.
So if you need one really depends on what you are going to use it for.
84 R100RS LE,14 Ducati MTSGT, 73 850 Commando, 78 CT90, 14 Ural, 74 Eldorado police, 64 R50/2, 13 TR650, 01 DRZ400E, 94 900SS/CR