Founded in 2001 by Jan Fatthauer, the 9ff company has become an important trainer in the world of Porsche. The tuner, based in Dortmund, works on all the elements of the vehicle, giving life to completely original models such as the GT9 or the Speed9, with powers reaching up to 1200 horsepower. One of 9ff's latest creations is a 911 GT3 Cup approved for road use.