In series as different as Formula 1 and NASCAR, the winning factor is often chassis setup and tuning. The list of Eibach partners reads like "Who's Who" in Motor Sports: AMG, Audi, BMW, Ferrari, Ford, Honda, Lamborghini, Lola, MazdaSpeed, Mitsubishi, Nissan, Subaru, Porsche, Renault F-1, Toyota, and many, many more.