Frequently asked questions:

How fast can I drive with the roof box?

By using fiber composite materials, we achieve best values in weight and stability, which allows high speeds due to the elaborately simulated aerodynamics. Thus, very high lateral and longitudinal dynamics are possible, which of course we do not want to withhold from you.

For reasons of rationality we recommend a maximum speed of 180km/h. A test on the Nordschleife will prove that more is possible.

Basically our goal is that your car does not lose its emotions. The car should drive itself with roof box as well as without. Without fear of the next overtaking maneuver or a sporty freeway exit.

What material is the roof box made of?

The roof box is available in two versions:

Cropfiber FL

  • Light golden fiber composite made from renewable raw materials
  • Special clear varnish emphasizes the carbon fiber-like fiber composite look

Cropfiber CA

  • Carbon fibers as we know them, but with sustainable components that do not affect the familiar visible carbon look

Learn more about the material

What are the technical data of the roof box?

The roof box has the following data:

  • Length: 215 cm
  • Width: 90 cm
  • Height: 32 cm
  • Weight: under 19 kilo
  • Volume: over 400 liters


How much does the roof box cost?

We are planning a market launch at the end of 2020 with the following prices:

4.500 €

The box is made of a light golden fiber composite material, which is made of renewable raw materials. A special clear varnish emphasizes the carbon fiber-like fiber composite look of Cropfiber FL.

5.500 €

The box is made of carbon fiber.

Why does the roof box cost more than other boxes?

Only by using fiber composite materials do we achieve a very low weight with very high stability. The material and its processing are associated with high costs. Therefore, each roof box requires over 16 hours of production time, a large part of which is manual work. The material costs already amount to a four-digit level.

Anyone who has ever bought a carbon part for their car knows that performance and looks often seem expensive by comparison. In order to always achieve perfect quality and performance, a great deal of effort is required in production.

Our approach is that a car with a value of 70.000 € should not be allowed to take away the emotions by a 1.000 € plastic box. This is one of the reasons for our material and the cost-intensive design, which has gone through a long development and simulation phase.


Further questions or suggestions?

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