Bultaco 250 Sherpa Trial 1983 Bultaco 250 Sherpa Trial 1982 Bultaco 250 Sherpa Trial 1981 Bultaco 250 Sherpa Trial 1980 Bultaco 250 Sherpa Trial 1979 Bultaco 250 Sherpa Trial 1978 Bultaco 250 Sherpa Trial 1977 Bultaco 250 Sherpa Trial 1976 Bultaco 250 Sherpa Trial 1975 Bultaco 250 Sherpa Trial 1974