I've got a 89 KDX200SR (the one in my avatar pic) that I've owned for about 15 years and did a fair bit of green laning when I first got it and even the odd hare & hounds (poorly if I recall!) but not even MOT'd it for the last 5 years. It really needs a motor refresh and a damn good going over but the tyres (Pirelli enduro I recall) and chain & sprockets have only done a few hundred miles and it does run, really must get it recomissioned as a great laugh, pretty nippy on teh road and perfect for my off-roading level of ability, or at least it was when I was a lot lighter and fitter!