So, a little bit to THIS story so please be patient. I'm 48, when I was in my teens I owned a smattering of different 4s of the day, mx175/xr200/250/350. In 1988, I bought a 1986 cr500. I rode the wheels off of this bike and sold it in 1999. Shortly after that I married, with kids following and started mountain biking. In 2008 I really couldnt stand mountain biking for one more day so bought a raptor 660. I also bought my son a Chinese quad which served well. Last year I made the decision for both of us to go to bikes. Mostly because my son was getting very brave on the quad and I could see things going bad. I got him a crf80, and myself a 13 yzf450. So, in October we spectated at an arena cross a few hours away. The bug!!, The week following we practiced at local tracks and I felt that next year we would both start racing. The 80 will be fine for time for next year while he works on his skills. For the 450 I have some concerns. I've added auto clutch, kick stand, bark busters, geared it down, larger tank, lowering link, clutch lever, and a host of other items to make it a better bush bike. Now I've been told that the kickstand has to go, so I'm thinking about buying a second bike and use it just for racing. I'm most interested to hear what the other riders have as I've never raced a 40 plus and have no idea what will or will not work. Should I buy another 450? Or 250 2st, or 250 4st? I'm torn, or just ride what I have? I'm in very good shape, 5-11, 185. All input appreciated, thanks!