Renntech

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Renntech is a Florida company established in 1989 by Hartmut Feyhl. It is best known for performance modifications of Mercedes-AMG automobiles.

Feyhl had spent 12 years at AMG well before the tuning company became part of Mercedes-Benz in 1999, serving as that company's North American technical director and acting as a driving force behind the AMG Hammer--an iconic early 1990s automobile which was, for a time, the fastest production sedan on earth, with a top speed approaching 300 km/h.

Over the years, Feyhl and company have developed high-performance products for virtually all Mercedes-Benz AMG vehicles (including the commercial Mercedes-Benz Sprinter van). While most famous for Feyhl's powerful engines, pizza-sized brake kits, and sporting suspension know-how, Renntech is in fact a full-line aftermarket supplier that offers everything from shift knobs and steering wheels to complete cars - most notable among these are the 200 mph Renntech E7.4RS (which was called fastest sedan in the world by Car and Driver in 1996) and the 2006 "Chrome SL" showcar--an SL-based project entirely covered in chrome. Each of these vehicles featured extreme performance, upgraded luxury features, and a fit and finish that met or beat the Mercedes factory cars.

Following the 1998 merger of Daimler-Benz and Chrysler Corp. (which became "DaimlerChrysler"), Renntech began expanding into the Chrysler category - beginning with the Chrysler Crossfire, a car based heavily on Mercedes-Benz SLK components (a logical move, as Chryslers began to utilize more Mercedes-Benz parts, more of Renntech's components became compatible).

More recently, however, Renntech has begun to offer products for other marques as well - specifically product for Porsche, Volkswagen, and Audi vehicles. These product offerings, while less exhaustive than Renntech's Mercedes offerings, focus on Renntech's core competencies: engine tuning, braking, and suspension, with an emphasis on the higher-end Audis and Porsche SUVs.

Historically, Renntech has been a prominent Mercedes-Benz specialist, and Feyhl himself is regarded by many as the USA's foremost authority on Mercedes tuning. Renntech's high-performance cars are often featured on the covers of major automotive magazines, including Car and Driver [1], eMercedesBenz [2], Motor Trend [3], AutoWeek [4], Modified Luxury & Exotics and others. In a feature article on Ray Durham's Renntech modified SL55, Modified Luxury & Exotics refers to Renntech as, "one of the foremost Mercedes-Benz tuners in the world.