Dirt bikes /
by John Hamilton.
- 32 pages : color illustrations ; 24 cm.
- Xtreme motorcycles. A & D xtreme. .
- Hamilton, John, 1959- Xtreme motorcycles. .
- A & D xtreme. .
Includes index.
Describes dirt bikes, motorcycles intended for off-road riding and motocross racing, and provides information on their structure, types of competitions, and safety measures.