Gravaa is a Dutch manufacturer of high-end bicycle wheel sets, which enable you to regulate your tyre pressure while riding. The wheels compose of lightweight carbon rims and advanced hubs, in which a miniature high-pressure pump, clutch unit and electro-pneumatic control system are integrated. The wheels are fully compatible with standard bikes. Controlling your tyre pressure is done wireless from your handlebars, and all relevant information can be displayed on your bike computer. Our primary focus is on quality, design and outstanding technology. All developments are steered by our headquarter, located in The Netherlands.