So I raced my friends bone stock 09 kfx 450 and was surpirsed, it was close but i beat him. We raced about 6 times with the same result. It was really close but when i hit 4th i started to inch away then when he topped in fifth i was still going. I have really bald tires, but with new i think the xx would take it top to bottom. After we switched with me being 190lbs and him being 130lbs his 450 wouldnt touch the xx at all. He was amazed at how much power it had. His would were "Damn dude that things got some nuts" Haha No videos to back it up but maybe next time. What has everyone had for run ins with 450's? Next on my list is my other friends 04 trx 450 with full fmf exhuast and jets.