Alois Ruf began modifying Porsche 91 Is in 1977, turning them into the fastest road cars available. In 1987 a Ruf CTR (based on a 911) broke the World Speed Record for a production car by going 211mph (339km/h), and the company has since grown. Ruf specialize in modifying all areas, therefore a 911 from them is a Ruf production car, not a Porsche. This 1997 example got 1.5-inch (38mm) lower suspension, Bilstein shocks, stiffer anti-roll bars and a strut brace. Drive was still via Porsche's permanent 4WD system with viscous coupling and traction control. The flat-six engine had different pistons, modified cylinder heads, more aggressive cams and special KKK turbochargers. Also changed was the stock exhaust for custom Ruf pipes, while a re-mapped engine management system took care of the running. Optional was an electronic clutch, permitting fingertip gear changes.
Porsche 911 Ruf (1997) Specifications
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