Offering proven components for your BMW engine, Miller Performance has strayed from the "generic" offerings most companies carry. Specifically our pistons, which are designed and produced in partnership with a company that has an extensive engine designing background that spans over 25 years and has had heavy involvment in professional racing such as NASCAR and record setting land speed teams. With full capabilities to customize pistons for your EXACT needs, our forged pistons walk on the competition in price and quality.