Has been ported by Pro Circuit. Head in in good shape, has normal wear and tear, will need to be shimmed. Valves looks to be OEM. Please see ALL pictures for details, what you see is what you will get! Any questions, please ask. The item "2010-2017 Honda CRF250R Cylinder Head Pro Circuit Porting 12 13 14 15 16 17 CRF" is in sale since Tuesday, February 23, 2021. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Camshafts". The seller is "usedcyclecenter951" and is located in Menifee, California. This item can be shipped worldwide. Manufacturer Part Number: 12010-KRN-A40 Brand: HONDA - Pro Circuit