Xtreme 4x4 is a half hour series that airs on Spike TV that began in January 2005 as part of Spike's weeken Powerblock line up. The show uses a how-to format, where the hosts build or modify trucks to turn them into hardcore off-road rigs. They also periodically show "extreme action events" from across the United States. These include such events as rock crawling, desert racing, sand drags, mud racing, and trail riding adventures.