1975 – Between 1974 and 1975 some more changes to the frame were introduced, for example the enlargement of the steering rod, which showed the new frame, shapes in advance, as they were then mass-produced
In 1975, the official bikes figured a change underlined by new slimmer tanks, with a built-in tool case, a high saddle while the back mudguard lines were smoother.
If compared to the previous models, the new ones featured different strengthening plates and the two back mud-guard joints were slightly bent onwards; at the same time the two long punch plates used as third engine joints disappeared, while the shock absorber joints on the big fork were shifted onwards so that they could operate vertically and the shock would be softer.
These bikes were equipped with conic Grimeca hubs and 35 mm Marzocchi forks with electronic sheathes, they debuted on the 2nd March during the first demanding season appointment, the 12 Hours at Ciocco, a lined couple competition unfolding on a 38 Km path to be repeated twelve-folds.
The couple Rottigni Brissoni achieved a smart success in the 125 class leaving behind the tough KTM and DKW teams.
The couple Radici – Marinoni ranked second in the 50 class.
Also the mass-production was updated, and the new generation of the Six Days, the so called “Series B” was born; this new model featured a different front mud-guard, a new chain carter, a new plate table, new sides, and a new filter case (equipped with a new sponge filtering element) all made in plastic, sturdier than the rigid plastic reinforced with incorporated glass.
The top models were powered with latest generation Sachs engines, equipped with 24 carburettors on the 50 cc, 28 carburettors for the 100 cc and 32 carburettors for the 125 and 175 cc.
In the middle of the year, the third generation of the “Six Days”, the so called “Series C” model was mass-produced; they already carried the new frames and all the new fringe components
At the beginning, only the more powerful models were changed, but already at the Valli Bergamasche the 50 cc model was ready to compete with the new features.
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