From the early 70's Diamond has been concentrating on manufacturing forged pistons for the racing industry.

In the 70's, 80's and early 90's Diamond Racing was known for its championship winning engines and its custom forged racing pistons.

From the late 90's to current day Diamond has solely dedicated itself to manufacturing forged pistons. With this being said, Diamond has updated all of its machinery so they can offer customers the state of the industry in machining.