my sx weighs 41lbs. I don't think there's any way in the world that your demo is the same unless you have a pretty small fork on it and very light thin rubber.
fox 40rc - weighs less than your 66. i changed out the wimpy specialized tyres for Nevegals and it's still 42 lbs.
"Sad, but true. Oh, so true! (I couldn't have said it better myself). The newest craze in mountain biking (a sport that keeps reinventing itself -out of boredom?- is called "Slopestyle" -doing flips on mountain bikes." -Monica Craver- :lol: