Dee ihe na-esote paragraf a - N'afọ 1952, Kavanagh ghọrọ onye Ọstrelia mbụ meriri n'ọsọ moto Grand Prix mgbe o meriri 350cc Ulster Grand Prix. N'afọ 1956, ọ meriri Junior TT na Isle of Man TT agbụrụ. Kavanagh banyere na Formula One Grand Prix abụọ na 1958 na Maserati 250F nke ya, nke mbụ na Monaco ebe ọ dara iru eru, na nke ikpeazụ na Belgian Grand Prix
ebe ọ hapụrụ asọmpi ahụ ebe ọ gbagburu injin ya na ọzụzụ, mgbe ọ tozuru oke nke iri abụọ n'ime ndị asọmpi iri abụọ na asatọ.