Honda Performance Development, Inc. (HPD) is a subsidiary of American Honda Motor Co. which was establish in 1993 and is based in Santa Clarita, California. It is the technical operations center for Honda's American motorsports programs and is involved in the design and development of race engines and chassis for auto racing series such as the IndyCar Series, American Le Mans Series (ALMS) and Le Mans Series (LMS).

Sports car racing

In 2006, Honda through its Acura brand, announced their plans to develop a Le Mans Prototype program for the ALMS, competing in the LMP2 class for the initial year of competition in 2007. The new car, called Acura ARX-01a, was a homologated development of chassis from Lola with a new 3.4 liter V8, the maximum size allowed by the rules being developed by HPD. This was the first V8 ever branded as an Acura as well as the first motor built entirely in the United States by Honda. Elements of the Acura V8, dubbed the AL7R, share similar architecture with the Honda engine used in the Indy Racing League although none of the parts are interchangeable. In 2010 Honda dropped the Acura name in favour of HPD and the car is now known as the HPD ARX-01.