Kawasaki H1 (1969-76)
A legend. A ferociously powerful 500cc three-cylinder engine in a frame that really couldn’t handle the power. The first one was the fastest accelerating stock road bike you could buy, could hit over 115mph and delivered all its power in a very narrow band between 6000 and 8000rpm, which (a) made it hard to ride and (b) ensured you were likely to crash if you hit the powerband in mid-corner. It was progressively tamed as it got older, both in chassis and braking (which was a good thing) but also in power (which wasn’t). The final version was hard put to hit 110mph. Emissions killed it in the end. Fuel consumption was always ludicrous: under 30mpg, and a 75-mile range before reserve. Something like a disc-braked B or D model is probably the best choice.
What you’ll pay now £2500-£8000 But should you? Everyone should sample a Kawasaki triple, so yes.
And you thought the H2 was a bonkers bike