As alot of you know I bought the blown up, black YFZ450 from LasVegasDuner a few weeks ago for a very good price .After tearing it all down it had a few motor issues.Blown head gasket,cracked piston,and trashed cylinder.I finally got it all back together today and started it up.Everything sounds good but until I actually go ride it nobody knows if its good to go.I put it back together with a custom CP high compression stockbore Wicked piston so im thinking it should run pretty good for what it is.Also added a set of comp cut STU 6 cup Padla Brats.Here are some before and after pics.
Before
After