I have 2 MX bikes, my 05 YZ450 and my 07 CRF450. I bought a second so that my son could ride with me. But he has gone away to school and so I decided to sell the older of the 2 bikes, my YZ. But I am actually quite sad about this. Sure it is a steel frame, and the suspension is starting to soften up. If I was a bit more mechanical I could probably keep it perfect forever but as it is my mechanical skills are somewhat limited as are most of the bike shops here. So I am not sure how I have never even adjusted valves. It has had new oil and clean filter every week it is ridden and just keeps going. The YZ runs great, I put it up for sale and I am getting about 3000 USD cash for it.. Sad Sad day..