This is a well built 2006 yfz 450 special edition. It has the wiseco 12.5:1 compression piston, vertex jug and been bored .30 over. It also has the stage 1 hotcam. It will run on 91 octane but I prefer the 100 octane or 110 race fuel. It lead me to be the leader in the points last year for the race season. It has the shorai lithium ion battery. Oil is changed after every race and after ever 2-3 hours of pleasure riding. It has the fox evol long travel front shocks with remote reservoir and lone star +2 a arms. I will include in the sale a like new +2 axecaliber rear axle that is chrome. It has an aftermarket slip on pipe. It has been jetted and tuned on the dyno and is not your standard yfz 450. I will also include an extra set of blue plastics.This is not your first time rider quad either. This thing is quick and if you are under 18 and interested in it you need to bring a parent if you plan to test ride it. I'm sure I have left something out. Thanks for looking. I am selling due to not riding as much as I used to and life changes