| Gran Premio del Belgio |
Edizioni della Classe 175 non valide per il motomondiale
| 1924 | Spa-Francorchamps | Geoff DAVISON (GBR) | - |
|---|---|---|---|
| 1925 | Spa-Francorchamps | Norbert VANNESTE (BEL) | - |
| 1926 | Spa-Francorchamps | René MILHOUX (BEL) | - |
| 1927 | Spa-Francorchamps | Arthur GEIß (GER) | - |
| 1928 | Spa-Francorchamps | Arthur GEIß (GER) | - |
| 1929 | Spa-Francorchamps | Bert KERSHAW (GBR) | - |
| 1930 | Spa-Francorchamps | Yvan GOOR (BEL) | - |
| 1931 | Spa-Francorchamps | Eric FERNIHOUGH (GBR) | - |
| 1932 | Spa-Francorchamps | Eric FERNIHOUGH (GBR) | - |
| 1933 | Spa-Francorchamps | Yvan GOOR (BEL) | - |
| 1934 | Spa-Francorchamps | Yvan GOOR (BEL) | - |
| 1935 | Spa-Francorchamps | Maurice VAN GEERT (BEL) | - |
| 1936 | Florette | Jean TERIGI (FRA) | - |
| 1937 | Spa-Francorchamps | Bernhard PETRUSCHKE (GER) | - |
| 1938 | Spa-Francorchamps | Léon NEUMANN (BEL) | - |