The Yamaha TDR is a series of sport bikes produced by Yamaha Motor Corporation from 1988 to 1996. The TDR was a combination of a dual sport bike, that was capable of both on and off-road riding, and a supermoto, for fast street riding. It featured a liquid cooled, two-stroke engine and was offered in both 250 and 125 cc displacements. The TDR was discontinued in 1996, but has since gained popularity as a vintage off-road motorcycle.