The KTM EXC is a line of off-road motorcycles made by the Austrian manufacturer KTM. The EXC line includes Enduro, Cross Country, and Supermoto motorcycles that are designed for extreme terrain and off-road racing. KTM produces four-stroke and two-stroke engines ranging from 125cc all the way up to 450cc in displacement, allowing riders of all skill levels to find an EXC model that suits their needs.