In-depth looks at popular makers of motorcycles describe how various models were developed, what they are used for, and stats and specifications, while "Tech Talk" boxes define words used in the narration and full-color photography aid the descriptions.
This is basically a children's book, but it's a great overview of the more popular modern Triumph bikes (Speed Triple, Daytona 675, Rocket III, Sprint ST, America). It also is a great introduction to motorcycles, providing an overview of how bikes are set up and how they function.