From four-speed Evos to five-speed Buells, this book is the Bible for Sportster performance. Whether your intent is to improve the existing factory parts or install something from the aftermarket, author Kip Woodring explains not just which parts to buy, but why.

Fourteen chapters cover: History, Planning, Exhaust, Induction, Ignition, Charging and Starting, Gearing, Valvetrain, Cams, Heads, Cylinders and Pistons, Flywheels, Oil, Transmission and Clutch. Each chapter is a compendium of facts and figures, including the following:

* Carburetor selection
* Ignition choice
* Choosing the exhaust
* Final gearing choices
* Roller rocker arms
* Pistons: cast or forged
* Pros & cons of strokers
* Differences in 4 & 5 speed cases
* Oil control


Not just another hop-up manual, the Sportster/Buell Engine Hop Up includes an in-depth analysis of important topics left out of other books. Issues like oil and oil friction, combustion-chamber design, camshaft trade-offs, valvegear weight and much more.