Lemke D, J & R Manufacturing is located between Milwaukee and Madison, Wisconsin. The company was incorporated in 1978 with 6000 square feet of manufacturing facilities. Our manufacturing facilities fill the gap between the drawing board and high production.

We specialize in prototype, short run, production run, high performance engine parts, jigs and fixtures. We offer complete service from raw material through machining, heat treating, grinding, plating and assembly. Lemke D, J & R is a leader in the copper bus bar manufacturing industry.