If you’ve never heard a six-cylinder motorcycle at full tilt, you’re missing out. It’s nothing short of a mechanical symphony?or, if you’re Portuguese, a ‘sinfonia.’ That’s the nickname that Lisbon’s Unik Edition has given their latest project; a screaming, six-cylinder Benelli Sei café racer.
The Benelli Sei might not be the most recognizable classic six-cylinder motorcycle (that honor belongs to the Honda CBX), but it was the first six-cylinder production bike to hit the market. Benelli released the 750 Sei in the early 70s, then followed it up with the redesigned 900 Sei in 1979, which boasted an 80 hp output and angular bodywork. Only 2,000 units of the Benelli 900 Sei were produced, and they were not cheap.
Unik Edition founders Tiago Gonçalves and Luis Gonçalves (not brothers) kicked this project off with a 1979 Benelli 900 Sei, but very little of the original bike remains. Tiago and Luis stripped the bike down to its frame and engine, and replaced or rebuilt everything else.
?The aim was to create an incredible piece with six exhausts, but easy to drive,? says Tiago.

To make sure they were building on a good foundation, the guys gave the engine a solid refresh and tune-up. They’ve serviced several six-cylinder Benellis and Hondas, so they know their way around these monstrous motors. The Sei’s three Dell’Orto carbs (yes, three) breathe through new pod filters.
It’s when Tiago and Luis mo...