Years with team
Years with team untill 1931.
| Pos. | Rider | Years with team | First season | Last season |
|---|---|---|---|---|
| 1 | MARDARAS José | 4.0 | 1928 | 1931 |
| 2 | OÑAEDERRA Ramon | 4.0 | 1928 | 1931 |
| 3 | ARRIAGA Andrés | 3.0 | 1928 | 1930 |
| 4 | ELORZA José | 2.0 | 1928 | 1929 |
| 5 | ZUBIZARRETA Juan | 2.0 | 1928 | 1931 |
| 6 | ARAMBERRI Antonio | 2.0 | 1929 | 1930 |
| 7 | AZURMENDI Pedro | 2.0 | 1929 | 1930 |
| 8 | GOGENOLA Félix | 2.0 | 1930 | 1931 |
| 9 | LÓPEZ Manuel | 1.0 | 1928 | 1928 |
| 10 | SARASQUETA Jacinto | 1.0 | 1928 | 1928 |
| 11 | EZQUERRA Federico | 1.0 | 1929 | 1929 |
| 12 | GOROSTIDI Pedro | 1.0 | 1929 | 1929 |
| 13 | OÑAEDERRA Juan | 1.0 | 1931 | 1931 |
| 14 | ZUBIZARRETA Víctor | 1.0 | 1931 | 1931 |