Ryken Tube Manufacturing, 3160 Dallavo Ct, Walled Lake, MI 48390, US

NPR of America was established in 1973 and supplies a variety of internal combustion engine parts for the clients in the original equipment manufacturers automotive markets. It utilizes some of the advanced product testing techniques for the manufacturing of piston rings, pistons, valve seats, and engine components. The company manages a staff of more than 30 employees, as well as has production, sale and engineering operations. It produces cast iron, steel and composite camshafts and valve lifters, seat inserts and rockers in several dimensions and sizes. NPR of America additionally offers plastic forming, composting, precision machining, and gravity and pressure casting services. It is a wholly owned subsidiary of Nippon Piston Ring Company (NPR).

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