1990 Benelli 900 Sei

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Specifications
- Category
- Classic
- Displacement
- 905.0 ccm (55.22 cubic inches)
- Displacement (cc)
- 905.00
- Engine details
- In-line six, four-stroke
- Power
- 80.0 HP (58.4 kW) @ 8300 RPM
- Top speed
- 193.0 km/h (119.9 mph)
- Compression
- 9.5:1
- Bore × stroke
- 60.0 x 53.4 mm (2.4 x 2.1 inches)
- Valves/cyl
- 2.0
- Fuel control
- Overhead Cams (OHC)
- Cooling
- Air
- Gearbox
- 5-speed
- Transmission
- Chain (final drive)
- Front tyre
- 100/90-18
- Rear tyre
- 120/90-18
- Front brakes
- Dual disc
- Rear brakes
- Single disc
- Wet weight
- 249.0 kg (549.0 pounds)
- Fuel capacity
- 17.00 litres (4.49 US gallons)
The 1990 Benelli 900 Sei
The 1990 Benelli 900 Sei sits near the top of Benelli's run of six-cylinder road bikes, a late example of a configuration almost nobody else in Europe was building at the time. That inline-six layout defines the whole experience: a long, narrow-feeling powerband that pulls smoothly rather than aggressively, paired with a soundtrack that's genuinely different from anything Japanese or Italian four-cylinder machines of the era offered. It's a grand-touring-flavored standard rather than a sportbike, happiest at steady highway speeds where the engine's smoothness and the chain final drive's simplicity both pay off. Handling asks for a deliberate riding style given the bike's substantial weight, rewarding smooth inputs over quick direction changes. The 1990 model carried over without significant mechanical changes from the prior year — buyers comparing it to a 1989 example should focus on mileage, service history, and condition rather than spec differences. Today's buyer is usually an experienced collector or Italian-bike specialist drawn to the engineering oddity of the six-cylinder format, not a casual commuter shopper. Given strong collector interest, well-documented, mechanically sound examples of the 1990 Benelli 900 Sei command attention from people building serious vintage collections rather than daily riders.
