Audi Sport customer racing cooperates with five partners in its GT3 racing program.

Castrol

Castrol is the world's leading manufacturer, distributor and trader of high-quality lubricating oils, greases and related services. Its worldwide customers come from the fields of automotive engineering, industry, maritime and aerospace transport, and oil extraction and production. The company is headquartered in the United Kingdom and is also directly represented in more than 46 countries. Castrol has some 7,500 employees worldwide.

Eibach

Eibach enjoys a reputation worldwide as a leading manufacturer of high-quality suspension and chassis systems as well as technical specialty springs for demanding uses. The range of applications covers almost all high-quality areas of industrial and automotive engineering. For decades, Eibach has also been an important partner in the world of high-performance motorsport.

Hör Technologie GmbH

The precision parts manufacturer Hör Technologie has been involved in motorsport, aerospace and motorcycle industry, and the automotive sector for decades. The know-how covers development, design, manufacture, heat treatment and quality control. From the prototype to production, Hör Technologie offers tailor-made customer solutions in transmission technology and camshaft technology.

Montaplast
Albert Stulz sr. founded Montaplast in 1958. The medium-sized company has decades of experience in manufacturing plastic precision parts and systems – initially for household appliances and subsequently for the automotive industry. In 1992, Montaplast of North America followed and since then, sales branches and development offices in Detroit, Suzhou, Nagoya, London, Paris, Stuttgart, Munich and Cologne have been established by Montaplast.

OZ Group

OZ is an Italian company with global distribution and a multibrand marketing strategy. Its main headquarters and production facility are in Italy (San Martino di Lupari, Padua), and it sells light alloy wheels through a global network of branches and qualified sales partners. OZ symbolizes Italian excellence in the world of wheels and is a major supplier to multiple sectors, including motor racing, after market, motorbike, and OEM with custom projects for luxury auto makers.