Put a veteran mechanic on your bookshelf. From simple 15-minute jobs such as lubing cables and bolting on new air cleaners to more advanced tasks such as cam changes and swapping heads, this how-to guide offers carefully selected projects you can do in a weekend. Color photographs guide you step-by-step through each performance project. Explains why each project should be done and what performance gains you can expect.

Keep a veteran mechanic at hand with this updated version of the best-selling manual for Harley-Davidson owners who want to hop up their machines. Created with the weekend mechanic in mind, this comprehensive, illustrated guide clearly and concisely outlines 101 projects that will improve the power, handling, and ride of Evolution-engined Harley-Davidson motorcycles. Drawing on years of hopping up and living with Evo-engined Big Twins and Sportsters, author and Harley-Davidson technician Kip Woodring provides step-by-step instructions for projects ranging from the basics of simple maintenance to the finer points of altering gearing, upgrading ignition, and making the changes that make a bike unique.

Many people modify their Harley-Davidson engines--and find the results disappointing. What they might not know--and what this book teaches--is that emphasizing horsepower over torque, the usual approach, makes for a difficult ride. Author Bill Rook has spent decades perfecting the art of building torque-monster V-twin Harley engines. Here he brings that experience to bear, guiding motorcycle enthusiasts through the modifications that make a bike not just fast but comfortable to ride. With clear, step-by-step instructions, his book shows readers how to get high performance out of their Harleys--and enjoy them, too.

Keep a veteran mechanic at hand with this updated version of the best-selling manual for Harley-Davidson owners who want to hop up their machines. Created with the weekend mechanic in mind, this comprehensive, illustrated guide clearly and concisely outlines 101 projects that will improve the power, handling, and ride of Evolution-engined Harley-Davidson motorcycles. Drawing on years of hopping up and living with Evo-engined Big Twins and Sportsters, author and Harley-Davidson technician Kip Woodring provides step-by-step instructions for projects ranging from the basics of simple maintenance to the finer points of altering gearing, upgrading ignition, and making the changes that make a bike unique.

'Sportster' conjures an image of a fire-breathing mechanical beast scorching the world's tarmac. With advice on the proper mechanical massaging, and diagrams and photos, this handbook shows how the Sportster can be transformed into a superbike. It includes a history of the Sportster from its birth in 1957.

The hottest segment of the off-road motorcycle market is high-performance four-strokes, and the most popular of those are Yamaha's motocross and off-road line of machines. In this Motorbooks Workshop title, Off-road enthusiasts would be treated to 30 projects for their Yamaha high-performance four-stroke motorcycle. It would include the YZ250F, YZ400/426/450, and the WRF variants. Mods would focus on making the bikes work better day-to-day, with a few engine overbores and so on in the mix.