Want a 480bhp twin-Busa monster? Here you go then...
Record-setter plans limited production run for this twin ’Busa-engined, 480bhp beast
Record-breaker Zef Eisenberg has taken his high-speed experience and poured it into a limited-run production bike – the Eisenberg V8.
Built using two Suzuki Hayabusa engines in a custom frame, the bike’s unlike anything that Eisenberg has built before.
“I like things to look correct – that look like a bike should. I also wanted it to be quite light, so I ended up working with Radical,” explained Eisenberg. “They’d already done work with mating two Hayabusa heads to a sandcast bottom end but I wanted something more compact. We ended up creating this naturallyaspirated V8, which produces 480hp at 10,500 rpm. It’s the same configuration Ferrari use, because we wanted it to sing.”
The work hasn’t just been mechanical – there’s been a lot of work on the electronics, too, including PWM-controlled fans that ramp up speed as temperature increases. There’s also a Motec ECU, with a ride-bywire Jenvey fuel injection system that operates eight independent throttle bodies. This allows them to create an electronic ‘safety net’ that can shut down cylinders to calm response – rain mode chops it to 240bhp, for example. But even the smallest details have been given real attention. “For this sort of power you should really use a 630 chain but they’re heavy, suck more power and are generally more cumbersome,” says Eisenberg.
“I wanted to use a 530 chain but the problem with a bike like this is that it would stress the chain too much as the tension changes through the suspension movement. To prevent this we’ve used a concentric swingarm, which pivots on the sprocket, but we’ve done a lot of work to prevent the chain pull affecting the suspension movement.”
As you’d imagine with a bike like this, the spec-sheet is dripping with top-spec parts including BST carbon wheels, custom Nitron shock, ISR brakes and a bespoke ceramic coated exhaust by Akrapovic. Nothing this special comes cheap though, and while the price hasn’t been set just yet, when it goes on sale earlier next year it’s expected to sell for £150,000.