There is no doubt about it: quads are currently enjoying a boom which exceeds the wildest expectations. So it is no surprise that more and more manufacturers are concentrating on this topic and generally offer a whole range of all-terrain four-wheelers with different cubic capacities and in various designs. But quads are not all the same: the sport quads are purely for fun and leisure; the all-terrain vehicles (ATVs), by contrast, are robust working vehicles and small tractors. What was previously missing was a solid, basic manual which deals with quad technology. And that is what this volume is, presenting the technology, types and tuning thoroughly and meticulously, to the joy of all who no longer want to do without these four-wheelers. 224 pages, 20 b/w pictures, 322 colour pictures, bound.