The "tenth-ton" is the speed at which you travel while giving your young sons their first motorcycle ride. The best part was when my 6 yr. old, Porter grabbed the handlebars and leaned down cafe-racer-style to make us go faster, then hollered into the wind, "Dad! This is awesome!"
I've had my stock 2003 Enfield Bullet since 2008 and do the regular maintenance and replacements along with a few minor mods. It runs great and sounds perfect.