FS: BRAND NEW CRF250 Pro Circuit Cylinder HEAD/ PC VALVE TRAIN (TI VALVES, SPRING KIT), NEW OEM Honda Cylinder head, Pro circuit port&polish, complete assembly shimmed with PC Cam shaft. All parts are brand new and ready to drop in. This assembly was over $2500 new. selling for $1000. Please PM for any further details. This was purchased for my 2008 Honda CRF250 and never used.