Product news: this carbon-fibre and aluminium bicycle with no upright in the diamond-shaped frame weighs just eight kilograms.

The bicycle comes with a flip-flop rear wheel hub so the rider can chose between a single-speed and fixed-gear mechanism by pulling a lever and flipping the wheel over.

Wing mirrors can be attached to the ends of the handlebars so cyclists can see behind without craning over their shoulders.

"High-end materials and shapes along with a new concept of urban mobility is the revolution," says Rizoma CEO Fabrizio Rigolio, who describes the bike as "a new alternative to the luxury caItalian bike manufacturers".

The 77|001 Metropolitan Bike is available to buy with either matte white or shiny carbon frame finish.

We recently featured a concept for a bicycle made from steam-bent wood.

See all our stories about bicycles »

The information below is from Rizoma:

RIZOMA 77|011 – New Metropolitan Bike

Rizoma, the internationally renowned brand for all things cycling, presents the innovative metropolitan bike 77|011 dedicated to those who love style and technology.

A unique commodity, ideal for navigating urban environments with style, the 77|011 has changed the rules and the concept of motion, adapting it for contemporary culture. Technically advanced and durable, the most compelling feature of Rizoma’s newest addition is its multi-functionality: with dual single speed (with a traditional free wheel) and fixed-gear (using a threaded sprocket, a growing trend among urban cyclists who prefer the greater control by using the pedals for braking) capabilities. The rear wheel comes ready with two mounts that allow the rider to choose freely between two pulleys, depending on their preferred mode of travel.

The 77|011 also comes with mounts for the optional brakes included on the base model. Rizoma’s interpretation of the ‘Made in Italy’ style and the philosophy are clearly seen in the simplicity of the design and in its plug and play functionality, all in a single frame size (thanks to the adjustable seat 92 > 96 cm), removing the complication of choosing a best fitting model.

The metropolitan bike 77|011 by Rizoma is the fusion of a cutting-edge concept with an exclusive design. The sleek carbon fiber structural skin frame and the simplicity of the belt-drive contribute to a decidedly modern look. Aluminum elements, machined from solid, make the 77|011 distinctive and a mere 8kg, so it’s easy to carry on a shoulder when climbing stairs or going into the subway. Shiny carbon and matte white (all made of carbon-fiber) are the two color variations available for Rizoma’s newest icon.

The Rizoma 77|011 costs €3,700 and can be purchased in select stores or online at www.rizoma77011.com.