历届GP250制造商冠军
年度 制造商冠军
1949 Moto Guzzi
1950 Benelli
1951 Moto Guzzi
1952 Moto Guzzi
1953 NSU
1954 没有评比
1955 MV Agusta
1956 MV Agusta
1957 Mondial
1958 MV Agusta
1959 MV Agusta
1960 MV Agusta
1961 Honda
1962 Honda
1963 Honda
1964 Yamaha
1965 Yamaha
1966 Honda
1967 Honda
1968 Yamaha
1969 Benelli
1970 Yamaha
1971 Yamaha
1972 Yamaha
1973 Yamaha
1974 Yamaha
1975 Harley-Davidson
1976 Harley-Davidson
1977 Yamaha
1978 Kawasaki
1979 Kawasaki
1980 Kawasaki
1981 Kawasaki
1982 Yamaha
1983 Yamaha
1984 Yamaha
1985 Honda
1986 Honda
1987 Honda
1988 Honda
1989 Honda
1990 Yamaha
1991 Honda
1992 Honda
1993 Honda
1994 Honda
1995 Aprilia
1996 Honda
1997 Honda
1998 Aprilia
1999 Aprilia
2000 Yamaha
2001 Honda
2002 Aprilia
2003 Aprilia
2004 Honda
2005 Honda