BENELLI SEI
THE INLINE six-cylinder engine is, arguably, as close to perfection as you can get with a combustion engine short of a V12 – something that hasn’t been tried on two wheels apart from the occasional one-off. Perfect primary and secondary balance mean inline sixes can be uncannily smooth and, from a performance point of view, that trait encourages more revs and more power.
Benelli’s Sei was the first production six-cylinder machine, starting out as a 750 back in 1972. Bear in mind that the first modern, mass-produced four-cylinder – Honda’s CB750 – had only appeared three years earlier, so this was a notable escalation in hostilities in a burgeoning
