With over 50 years of experience and humble roots stemming back to the early days of hot-rodding, Diamond Racing is a leading supplier of off-the-shelf and customer forged and billet racing pistons. Proudly manufactured in the USA in its Detroit, MI facility, Diamond pistons are engineered and built with performance knowledge gained from working with professional level racing teams and organizations. This performance edge is evident in Diamond’s piston offerings, covering a vast range of engine applications, including domestic, modern muscle, sport compact, European, NHRA, diesel and more. When it comes to Diamond pistons, the proof is in the performance!