1986 Benelli Sei 900 6 Cylinder Italian Flashbike New Old Stock & Unused ULTRA RARE, INCREDIBLY STYLED JAW DROPPING BEAUTY

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Seller: misterflump ✉️ (477) 100%, Location: Rochford, GB, Ships to: GB, Item: 223038934679 1986 BENELLI SEI 900 6 CYLINDER ITALIAN FLASHBIKE NEW OLD STOCK & UNUSED. ***I AM OPEN TO OFFERS FOR THIS BEAUTIFUL BIKE!!!*** The time has come to sell my bikes, so here is one of the rarest and most desirable machines I have had the privilege to own. I am selling this amazing, absolutely beautiful, unregistered, unridden, never used, 1986 Benelli 900 SEi from my private collection. Here is some background about this amazing machine: The Benelli Factory was sadly destroyed during the Second World War however with aid from the Americans they were soon up and running again producing mainly lightweight street bikes for post-war Europe. These largely mundane machines were soon to be joined by more racing focused bikes and in 1962 they produced one of the finest small capacity multi-cylinder bikes – the 250cc Four Cylinder Racer. This jewel like motorcycle was later enlarged to 350cc and 500cc capacity with which they took on the new Japanese top dogs winning the world championship in 1969 and proving themselves one of the finest manufactures of multi-cylinder engines.

At this point the Benelli concern was acquired by Alejandro deTomaso and under his stewardship and flair the company reach new heights. Possibly the most amazing road bike that Benelli built during this period is the 750Sei – the world’s first 6 cylinder production motorcycle in 1972. The imposing chrome and alloy engine was placed across the frame with 6 separate upswept exhausts sweeping along the length of the bike making an Italian wail so distinctly different to the multi-cylinder Japanese bikes. The engine boasted a 13-bearing crankshaft, a single overhead camshaft that was fed by 3 Dell Orto VHB 24mm carburetors and delivery was through a 5-speed gearbox. This generated 76bhp and was capable of 120mph.

Customer deliveries for the new Sei started in 1974 but they were soon over shadowed by Honda’s own 6-cylinder response, the CBX. Benelli came back in 1980 with an enlarged 900cc version of the Sei along with added improvement to the gearbox, crankshaft, 6 into 2 exhaust and now with a dry clutch (which had been a weakness on the 750). Power was increased to 80bhp and the top speed was now a claimed 134mph. Another party piece of the new 900 Sei was linked brakes so that the foot operated rear brakes also applied the front brakes lightly as well (this was a system borrowed from Moto Guzzi which had also been acquired by deTomaso). The wheels were now Campagnolo cast alloy with a disc at the rear rather than the wires and drum of the 750.


These outrageous bikes were often referred to as ‘Flashbikes’ in their period as they were rare, expensive, European and high performance. Their scarcity has led to them being highly prized by collectors today.
Please note: This is a 32 year old bike, that has never been ridden or registered. It has spent its life on show in a dining room until recently, since being delivered from the Benelli dealership in Manchester all those years ago. It is totally original, highly collectible,  a stunning show piece and undoubtedly a blue chip investment. It has 10kms on the clock from the factory. The bike speaks for itself, and if you know what it is, you will appreciate its fast appreciating value. If you are interested, or want to discuss the bike, feel free to ring me on 07989 317523 or come over and see it. We are near Southend Airport, in Essex. If you need the bike delivering, I know a very good company who will deliver this valuable machine to your door with extreme care.
  • Year: 1986
  • Mileage: 10
  • Model: 900SEI
  • Colour: Red and White
  • Metallic Paint: Yes
  • Drive Type: Chain

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