NOS Kawasaki Kdx175 Piston part number 13001-1048. Condition is "New" however it looks like a boost port was added to it .. tried to do research to see if this is something Kawasaki offered but couldn't find any info on that.. I have 3 of them like this at the time of this listing, the hole looks pretty clean but is not 100 percent circular .. free shipping to the 48 states.. Hawaii and Alaska is extra .. other countries must use the global shipping program that eBay offers ,thank you and have a great day