Here in Muscat in the Sultanate of Oman, the CRF450X is the offroad bike of choice for absolutely all the expats who ride offroad. There is hardly another model that anybody uses, one or two wr450f Yams, a few KTMs but after trying something different, folks just come back to the Honda. And out here they take a terrible pounding, big distances, no gates to open and close, just wide open spaces full of deep sand and stony gravel tracks where you can absolutely nail the thing. People have killed their bikes but only because they don't change the oil every 10-20 hours + of course very regular oil and air filter maintenance. Most lead very hard lives, there are some fast guys here who do well in the UAE Dubai Desert Challenges and they haven't killed their CRFs.
So they are reasonaly indestructible, there are a ton of fantastic accessories and the thing is as slow or fast as you want it to be, and if you want it to be fast it is bloody ace. I have never really been able to wheelie bikes before, but this one is ferkin amazing. Any speed, and gear, sit back 6inches, snap the throttle a bit, no clutch and you get a lovely controllable, hooligan wheelie that is dead easy to control
It takes a bit of looking after, but it's only changing the oil ( gotta do the gearbox and top separately + the filter but it is 20 minutes once you get the hang of it) Mine is pretty standard in term of engine and chassis to keep it reliable, the changes are mainly to give it long distance capabilty and protection from stones from either your own wheels or the fast guys who are inevitably in front of me
Plenty have done 10k miles before needing a fairly extensive rebuild, piston, valves, other bits and bobs, but if you van your bike around to the trails without doing 50 mile road stretches or do the Cambrian/Hafren type of rally then it is a great bike.
When my contract finishes here, I shall get my 2008 model rebuilt by the talented and cheap Indian engineers using parts shipped from America (where they are very cheap and abundant) and then ship the bike home
The thing might be a bit pissed off after a life in the sun, coming back to a rainy wet Wales though
Here's mine...