Renntech Inc. is an American high-performance automotive aftermarket tuning company founded in 1989, with their headquarters located in Stuart, Florida. RENNtech specializes in engineering, designing and manufacturing parts for Mercedes-Benz, AMG, Maybach and Mercedes-Benz Sprinter vehicles as well as other European luxury and performance vehicles. RENNtech also operates a full motorsport division named RENNtech Motorsports fielding a Mercedes-AMG GT4 racecar in SRO's North American GT -series. RENNtech Classics was founded to offer a wider range of services for owners of early RENNtech, Pre-Merger AMG, and collectible Mercedes-Benz vehicles.