bulletproff... thats an understatment! my grandpa has one that is either 85, 88 or 89... anyways, he has 14 grandkids, 12 of us love to ride quads! imagine a quad that has a [bleep] of miles on it.... multiply that by 10 and thats how many his has on it. it is an absoluete work horse! thing is awesome! he does regualr maintance on it so it still purrs like a kitten but it has been through hell and back and still runs great! i hight reccomend them! fast enough to have fun, but slow enough to hunt on, i love em! and four stroke to boot!