The Big Book of Harley-Davidson Horsepower is a thorough, full-color guide to building horsepower in Harley-Davidson's latest Big-Twin engines. Tom Murphy puts his decades of real-world experience into words that anyone can understand and everyone will enjoy reading. The text includes easy-to-follow hop-up "recipes" for stage one (Street Performance), stage two (Super Street), and stage three (Full Race) engines for Evolution and Twin-Cam models, plus specific improvements for the already powerful V-Rod engine. Also, it features a section on fuel injection, and it includes tips and aftermarket performance products for transmissions, suspensions, brakes, and tires. Appendices include basic information for speed-addicts on how to go racing, and a full reference of aftermarket suppliers.