Following the book “Moto Rumi The complete history” by Riccardo Crippa, in 1954 Felice Rolla, an expert preparatory of racing bikes, decided to develop a Rumi prototype based on a 125 bi-cylinder Gobetto.
With the help of the factory, Rolla modified the 125 twin two stroke into 125 twin four stroke with DOHC.
The engine was mounted in a racing Gobetto.
Only one prototype was mounted by Rolla, and two more engines were transformed.

The history of the here presented prototype “Rolla” is known. Carabinieri Maréchal Grandonni, well known specialist and technicien at that time, bought the Rolla engine number 003 in order to mount it in a Gobetto. There are subsequently two Rumi 4 stroke Bialbero “Rolla”, the here presented is though the second and last produced.
This rare Rumi is available in Italy.

This vehicle is available immediately.  Please contact us for further details.

Technical Specifications:
• Engine – Four stroke twin, twin camshaft actued by a gear train.
• Displacement – 124,68 Cm3
• Cylinders head and barels – Separate aluminium cylinders, aluminium heads.
• Carburettors – Dell'Orto SSI 22C
• Carburettor Data – Choke tube: 22. Coupling M 25.4. Valve 70. Jet 265. Tapered needle R2. 3rd notch. Max jet 115. Min jet 50. Float 11. Float chamber SS2. Bellmouth air intake.
• Ignition – Twin spark Bosch UZ / IF 2L1 magneto.
• Clutch – Wet multiplate.
• Gearbox – 4 speed constant mesh.
• Drive – Geared primary, chain secondary.
• Frame – Open cradle in special lightweight tubing.
• Front suspension – Leading link.
• Rear suspension – Swinging arm with shock absorbers.
• Wheels – 36 spokes laced onto aluminium rims, front 18", rear 17".
• Tyres – Front: ribbed 2.00 X 18. Rear: grooved 2.50 X 17.
• Brakes – Front: Central twin shoe drum. Rear: Central drum.
• Electrical system – External Marelli magneto.
• Instrumentation – Rev counter.
• Riding position – Black leather racing saddle.
• Fuel tank capacity – 22 litres. ( aluminium tank )
• Dry weight – 88 Kgs.
• Colour range – Ivory with a yellow design on the fuel tank.