The Four Stroke Dirt Bike Engine Building Handbook is the most comprehensive guide for dirt bike engine building available, whether you are working at home or as a professional in a shop. The process of building four-strokes to race engine quality is explained in-depth in this thoroughly illustrated handbook. Containing over 250 full color pictures, 300 pages of step-by-step instruction, and an incredible amount of detailed technical knowledge that can be applied to any make and model, The Four Stroke Dirt Bike Engine Building Handbook is a trusted guide for any expert or beginner. The handbook is 8.5" x 11" and 2.3lb. With thick pages and high-quality construction, this book is designed to withstand heavy shop use. If you wish to buy The Four Stroke Dirt Bike Engine Handbook AND The Two Stroke Dirt Bike Engine Handbook together, please visit our website at www.diymotofix.com.