One of the most exciting motorcycle projects of the past few years is finally revealed in its completed form. The Bimota KB4 officially debuted at EICMA today. along with a more stripped-down version, the Bimota KB4RC.
Both bikes use a Kawasaki four-cylinder engine, the same practical powerplant that features in the Ninja 1000SX sportbike. This is a much tamer machine than the Tesi H2 hyperbike that Bimota revealed in 2019, which was based around Kawasaki’s supercharged H2 engine—but it should also be much more affordable. Mind you, like many of the finer things of life, if you have to ask the price tag of a Bimota, you probably don’t have the dough to buy it in the first place.
The KB4 might use a more serious-minded engine than the Tesi H2, but there is still clever engineering at work here. Borrowing a page from the Harley-Davidson Project Nova prototypes (can you believe it, reader?), the radiator is positioned under the seat, with ductwork bringing cooling air towards the fins. This means the bike’s front section has much tidier visuals, and indeed, the semi-naked RC model really does look like an early-’80s superbike, with four massive header pipes jutting out, not hidden away by a massive rad.
The engine itself is a stressed member of the chassis, with a trellis-style front subframe bolted on for the forks, and another subframe bolted on back for the swingarm attachment. The suspension is top-shelf (adjustable Ohlins NIX30 forks and TTX36 shock), but like the engine, it’s a step down from the radical Tesi H2 design.
Elsewhere, the Bimota KB4 series gets Brembo Stylema brakes and trim five-spoke alloy rims with Pirelli Supercorsa tires.
The fairing itself is carbon-fiber, which cuts weight but also adds expense. Speaking of which, we’ve had no indication of an arrival date for North America, or pricing when that happens. At least we can look at the photos, and that doesn’t cost us anything …