04yfz rebuild kit ??

[MurrderdYFZ]

Hey all i was wondering if you could help me out on which top end rebuild kit is the best to go with. My yfz is just jetted with full hmf exhaust and twin air filter....
Thanks
zach

[2004yfzrider05]

Im guessing your just wanting to put a new piston in it? There really isnt any kit. OEM gaskets are best in my opinion you will need a head gasket and base gasket for sure. ANd if your wondering about pistons the majority on here will recommend cp. Also since yours is an 04 you might want to look into the oil mod. Oil Mod Completed

[jchampion99]

i like runnin the je pistons never had a problem out of them

[GU_NORCAL_YFZ]

yeah i would deff look into getting the oil upgrade for peace of mind you don't won't to do all that work with the new top end and piston and then grenade it

[SuperCrew]

Depending on what your plans are. I would split the cases get a OEM 06-08 crank that way it's a true 450 replace your crank bearings while you have it apart. Do the oil mod. Go with factory bearings, and gaskets reason being they last longer than any other. If your replacing the cylinder do not by a CW they are hit or miss. Get the 07-08 oil pump if you plan on doing the oil mod also. Piston wise CP, JE, Wiesco, or an OEM can't go wrong with any of these.