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 Rumi - 125 Sport & Super Sport
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Photo ou archives : F-M. Dumas

Capacity : 125
Model : Sport & Super Sport
Production : 1953 -
Category : (R) Street Bike


125 Sport· 1953

The birth of a style

Every modern sporting bike owes a debt to the Rumi 125 - this little sporting twin, with

its lively temperament, was among the most potent machines of its day and the inspiration of a whole generation of "made in Japan" sports bikes.

Hard Times

It was a child of its times: Postwar Italian industry - particularly in the aviation and military sectors - was getting back on its feet and attempting to provide transportation to a people impoverished by five years of war. That limited purchasing power naturally

made the industrialists concentrate on engined two-wheelers; companies such as Aermacchi, Piaggio and Rumi brought new thinking to bear on two-wheeler design, unhampered by outdated machinery and worn-out ideas.

Unusual Power Unit

Rumi of Bergamo had its roots in foundry work for the navy and the fabric trade. It entered the motorcycle business in 1949, using a very unusual power unit - a 125cc

twin two-stroke horizontal, which powered not only the famous ScoiattoJo and Formichino scooters but also Rumi's first production machine, a 125cc motorcycle. The 125 quickly became available in "sport" and "supersport" models, which were developed into the Rumi "Junior Gentleman" and "Junior Corsa" in the mid-Fifties. Soon after, Rumi returned to the arms trade and abandoned two-wheeler production.


Engine: 125cc ( 42x45mm) flat -twin two-stroke

Power Rating: 7. 2 hp

Valves: two-stroke

Fuel System: carburetor

Transmission: 4-speed

Suspension: (front) telescopic forks; (rear) plunger

Brakes: 5.5in drums

Weight: 214 lb

Wheels: 2.75x21in wire

Maximum Speed: 60 mph


This photo shows the standard Rumi "Sport"of 1953; the twin-carburetor "Supersport" developed 9 hp and could reach 75 to 80 mph, a performance equivalent to that of 205cc and 350cc bikes of the period.

Le fichier Moto Passion réalisé par François-Marie Dumas réunit près de deux mille photos accompagnées d'un historique très complet des machines présentées.
Il sera progressivement mis à jour ici et toute information complémentaire est la bienvenue sur info@moto-collection.org.

Cette documentation unique, qui constitue sans doute l'encyclopédie la plus exhaustive jamais écrite sur l'histoire de la moto, a été réalisée avec l'assistance de nombreux spécialistes dont principalement Didier Ganneau, Christophe Gaime, Mick Woollett, Jean Goyard, Bernard Salvat, Christian Rey, Yves Campion, Helmut Krackowizer, Michael Dregni, Michel Montange, etc. que je remercie ici.

Disponible sur demande :
- Les fiches originales sur papier
- Les photos et archives signées de mon nom en haute définition ou les documents originaux.
Me contacter sur info@moto-collection.org pour les conditions et droits d'utilisation.