This third edition of Motocross and Off-Road Performance Handbook is the complete guide to turning your motocross or off-road motorcycle into a wicked racing weapon. From suspension tuning to building a high-revving outdoor racer, tuner/journalist Eric Gorr gives you the inside line on tricking out your off-road machine. Whether you want a broader, more usable powerband for enduro competition, explosive low-end power for supercross, or more top-end boost for motocross racing, Motocross and Off-Road Performance Handbook takes a hands-on approach to getting the most from your engine. This new edition covers all current models of two- and four-stroke engines, including the latest high-performance four-strokes from Yamaha, Honda, Suzuki, Kawasaki, and KTM. The book includes:- Rebuilding four-stroke top-ends- Jetting and exhaust tuning - Porting and reed valve modifications- Suspension setup, tuning, and revalving- Used bike evaluation- Dual-sport conversions of off-road bikes- Supermoto setups- Tuning tips for late-model bikes - Recommended tools and shop setup - Race day preparations With this new edition of Motocross and Off-Road Performance Handbook, you'll have an arsenal of information to give your bike the competitive edge needed to capture the checkered flag.