9FF

9FF Engineering GmbH is a German automotive manufacturer and tuning company based in Dortmund, founded in 2001 by Jan Fatthauer. Specializing in high-performance conversions of Porsche vehicles, 9FF is registered with the German Federal Motor Transport Authority as an official vehicle manufacturer. The company offers bespoke tuning services, performance enhancements, and custom-built supercars, with a focus on individualized customer specifications. Among its notable creations is the 9FF GT9, a mid-engine…