Benelli · 1978–1989
Benelli 900 Sei: history and buying advice
The bigger successor to the 750 Sei, with a small fairing and six-into-two exhaust.
History
The 1974 750 Sei was the first six-cylinder for the road. In 1978 its successor came: the 900 Sei. Bore and stroke were increased, the bike got a new look with a small fairing resembling that of the Moto Guzzi Le Mans, and a disc brake was fitted at the rear.
The 900 Sei was expensive and heavy, and attracted fewer buyers than hoped. Probably fewer than 2,000 were built, in a few series until the end of the eighties. Precisely because it is rare and has six cylinders, it is now popular with collectors.
Key data
| Engine | 6 cylinders in line, four-stroke, 1 overhead camshaft |
|---|---|
| Capacity | 906 cc (60 × 53.4 mm) |
| Power | approx. 80 hp at 8,400 rpm |
| Top speed | approx. 195 km/h |
| Weight | approx. 254 kg ready to ride |
| Carburettors | 3 × Dell’Orto 24 mm |
What to check when buying
- The clutch: a heavy lever and slipping were common. Ask whether the improved clutch springs and plates are fitted.
- Check whether the original double chain is still fitted or has been converted.
- Check the rear suspension; it is often too soft or worn.
- Six cylinders means three carburettors and six spark plugs. Let it warm up and listen whether everything runs evenly.
- Plastic parts and exhausts are hard to find. Check that everything is complete.
SourcesWikipedia: Benelli Sei (English)Old Bike Australasia: Benelli 900 Sei (English)