The remarkable diversity of motorcycles - from racing or supersport to enduro, chopper, tourer or scooter - implicate very distinct characteristics regarding engine performances, vehicle structure, active and passive safety elements. This book conceived by well known experts from Austria, Germany, Italy and the United Kingdom offers a large overview upon computer aided modelling and design, research, concept and technology applied to advanced motorcycle engines, vehicle components and elements of active and passive safety. Together with the previous three volumes of 'Development Trends of Motorcycles' - published in 2003, 2005 and 2007 - this book is a recommended lecture for engineers, engineering students and motorcycle specialist which are interested in the future development ways of motorcycles.