FITS ALL 04-06 RMZ250 AND 04-07 KX250F MODELS. NO WAITING NO CORES! One brand new OEM cylinder head that is fully ported and polished. Perfect for your stock or built motor. We recommend that this be installed by a qualified mechanic with experience doing this type of work. Piston comes with specific instructions for setting the ring gap. Failure to follow these will result in engine failure. The item "04 05 06 RMZ KXF 250 KX250F RMZ250 Ported Cylinder Head Porting Port New OEM" is in sale since Saturday, July 10, 2021. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Components".…