Speed at the TT race

For over 100 years the world's best motorcycle racers have pitted themselves against the gruelling 373/4-mile Isle of Man Mountain Course at the annual event known worldwide simply as 'the TT'. The Tourist Trophy meeting - to give its proper name - represents perhaps the greatest challenge that the sport of motorcycle racing can offer. The top names in road racing - Collier, Wood, Duke, Hailwood, Agostini, Hislop, Jefferies, McGuinness, Hutchinson and the Dunlop dynasty - have all considered the pursuit of a Tourist Trophy to be the ultimate goal. From riding the earliest single-cylinder, belt-driven machines with outputs of under 10bhp, to coping with today's sophisticated four-cylinder machines giving well over 200bhp, generations of riders have risked their lives to satisfy the desire to go faster than the next man and to win a TT. In the process they have lifted lap speeds by almost 100mph. Exactly how that huge increase has been achieved is told within these pages.