1984 Benelli 900 Sei

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Specifications
- Category
- Sport touring
- 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 1984 Benelli 900 Sei
1984 Benelli 900 Sei sits at the top end of Benelli's road-going range, a six-cylinder grand tourer built for riders who wanted something genuinely different from the parallel-twin and four-cylinder norm of the era. That inline-six engine is the whole story here: it spins smoothly, pulls with a distinctive multi-cylinder howl, and gives the bike a character that feels closer to a small luxury car than a typical early-'80s sportbike. This isn't a machine for quick corner-carving sessions so much as long, steady highway miles where the engine's refinement and the bike's substantial weight work in its favor rather than against it. The 1984 model carried over without significant mechanical changes from the prior year — buyers comparing it to a 1983 example should focus on mileage, service history, and condition rather than spec differences. Parts and specialist knowledge remain scarce, so mechanical sympathy matters more than usual. Today's buyer is typically a collector or Italian-bike enthusiast drawn to the six-cylinder novelty rather than someone seeking a daily rider, and interest in the 1984 Benelli 900 Sei sits at a moderate but steady level among those who appreciate oddball European engineering from the period.
All Benelli 900 Sei years
More Benelli models, 1982–1984








