NPR of America, Inc. was established as a wholly owned subsidiary of Nippon Piston Ring Co.,Ltd. (NPR) in 1973. U.S. corporat ... e headquarters is located in Bardstown, KY. We also have a plant in Grand Haven, MI and two U.S. sales offices in Novi, MI (OEM Sales) and Los Angeles, CA (AM Sales). We have been supplying the Original Equipment Manufacturers and the Automotive After Market with the highest quality internal combustion engine parts, since 1973. We continue to advance into the Twenty First Century by meeting the changing demands of the Original Equipment Manufacturers and Automotive After Market by utilizing extensive product testing techniques to deliver a consistently higher level of performance and lasting quality. read more