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Benelli · 1983–1990

1986 Benelli 900 Sei

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1986 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 1986 Benelli 900 Sei

1986 Benelli 900 Sei sits near the top of Benelli's lineup as the brand's flagship sport tourer, a six-cylinder statement piece built for riders who wanted something genuinely different from the Japanese and Italian twins dominating showrooms. That inline-six engine is the whole point here: it spins smooth and refined where contemporaries buzz, delivering power in a broad, unhurried wave rather than a sharp rush. On the road it feels more like a grand tourer than a canyon carver, comfortable settling into long highway stretches with a mechanical character you don't get from a four-cylinder. It's heavy and asks for a deliberate riding style, rewarding patience over aggression. The 1986 model carried over without significant mechanical changes from the prior year — buyers comparing it to a 1985 example should focus on mileage, service history, and condition rather than spec differences. Parts and specialist knowledge are scarce, so this isn't a bike for someone wanting effortless ownership. The typical buyer is a seasoned collector or Italian-bike enthusiast already familiar with quirky maintenance demands, drawn to the 1986 Benelli 900 Sei as a conversation piece and a rare slice of mechanical engineering rather than a daily rider.

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