By going to a 16 tooth counter sprocket, you can lower your RPM's by about 300 PRM's @ 70 MPH. Stock tires for the KLR 650 are 130/80-17. By going to a 120 or 130/90-17, you can drop a few more RPM's.
There are options for the rear sprocket, I have no experience with them. The 16 tooth front sprocket still allows me to putz and putter on forest service roads and get across creeks. Any higher gearing would prohibit this kind of riding. I wouldn't be able to get home.
“many a trip continues long after movement in time and space have ceased”- Steinbeck, [I]"Travels with Charlie"
[FONT="Century Gothic"][I]Sometimes your only available transportation is a leap of faith[/I] [/FONT]