The KTM EXC was one of the off-road bikes that Austrian motorcycle manufacturer KTM Sportmotorcycle AG released for the 2005 model year. It can be considered a higher-level version of the SX, another off-road bike from KTM. The 2005 KTM EXC is powered by a liquid-cooled single-cylinder engine. The two-stroke version goes on the EXC 200 and EXC 250, while the four-stroke version is found on the other models. KTM has been a continuous technological force, leading the industry with innovations like power valves, USD forks, water cooling and other technological leaps of the 80s, and more recently ('95 model year) the first dirt bike manufacturer to return to conventional slider forks.