In Oklahoma no titles for OHV (off highway vehicles) until 2005 from then on all OHV's have an OHV title.
2004 and earlier we had to pay sales tax at 8.7%. Now an excise tax is paid at 3.9%.
Most people bought the OHV's out of state before '05 because of the high sales tax on OHV's.
A notarized bill of sale is all you need to get a OHV title for pre 2005 OHV's.
One time cost no downside to that. Better for the cops to find your bike after theft.
If you street tag a bike in Okla. all you technically need is an odometer to get the title.
It's best if it is fully street legal but I got my KX500 street title with the bike, for them
to record the VIN. number and my Vapor speedo/odometer new in the box.
Down side to street tag on a KX500.........
Pay for a tag and liability insurance each year. Too easy to get tickets.
Pre '05 if your bill of sale is from out of state you have to comply with that states
rules. If it had a title you have to have it to title it in Okla.