World’s most expensive motorbike worth £1.4MILLION comes with diamond ring in the fuel tank

AN INCREDIBLE motorbike worth a whopping £1.4million has been labelled the most expensive in the world.

And the one-off blue Harley-Davidson comes with a diamond ring mounted on its fuel tank.

The bike is the product of a collaboration between Swiss watchmaker Carl F. Bucherer and Harley-Davidson specialist Bündnerbike.

The pair created the unique bike to showcase of the luxurious designs both manufacturers are capable of.

Modelled from the classic Harley-Davidson Softail Slim S, the Blue Edition took eight people a total of 2,500 hours to complete.

Gold plating is spread across the motorcycle on brake and clutch levers, dials and throttle valves, while the engine is lit with heat-resistant LEDs.

The rider sits on a cowhide saddle, while holding onto handgrips encrusted with diamonds.

And the incredible blue colour is created using a "secret" painting technique, highlighted further by more diamonds sprinkled all over the bike.

But the most usual feature is a removable safe in the fuel tank containing a 5.40ct diamond ring under an armoured glass dome.

On the other side of the tank, there is another display case for a Carl F. Bucherer watch, which also acts as a winder to keep time while the bike is running.

The owner will also get another watch along with the bike, so they will "always have a piece of the pinnacle of Swiss watchmaking at his or her side".

The bike is on sale in Switzerland for £1.4million.

If it sells at that price, it will become the most expensive motorbike ever made.