Gee, no wonder I do not comment here much. Try to give a person some advice and the wolves come out to mark their trees. Our 250r's were built to run to the limits, and that is just what we do with them. If you are going to race one of these, or any other quad, and be competitive, expect to work on it and maintain it. Maintenence includes every nut, bolt, fastener, bearing, bushing, the shocks, and every other part. Not just the engine. It is no fun to drive 300-400 miles to a race and find you had a bad axle bearing in practice and you can't race. They will last a long time if you ride them and race them occasionally, or if you have not mastered a full throttle. I am thrilled a few of you can get longevity out of your R's. I have had one of mine since '94 and it still runs great. FOX17, best of luck on your decision.
Not meaning for my earlier post to come out sounding offensive in any way. My engine has been very reliable so far, that's all I was trying to say. And that the 450R's I don't think are any more reliable than the 250R's are.
On another note, its refreshing that there are still a few of us left, I still love the 250R and always will.