David jefferies competed in a range of racing classes including the grand prix world championship in 1993 and the world superbike championship in 1993 and 1995 he was the british superstock 1000 champion twice in the previous three years this is not an official product and is not in any way endorsedkids t shirt design reads those who risk nothing do nothing achieve nothingwe lovingly print all of our kids t shirts onto 100 cotton soft style loose fitting unisex t shirts for boys an