A roof box is a roof box—right?
At first glance, both products serve the same purpose.
They provide additional storage space in the vehicle.
A classic plastic roof box is perfect for that.
That is why it would be wrong to portray plastic as a bad solution across the board.
Carbon becomes interesting when other requirements come into play.
Lightweight construction.
Stiffness.
Custom manufacturing.
And design on a special vehicle.
So the question isn't "Which material is always better?" but rather "Which roof box is best suited for your intended use?"
How is a traditional plastic roof box manufactured?
Large quantities are typically manufactured using industrial plastic processing methods.
This enables high repeatability and comparatively low unit costs.
This is a major advantage for the broader market.
This enables manufacturers to offer durable and practical products at prices that would be unattainable with small-batch carbon fiber production.
If you're just looking for plenty of storage space for a family vacation, you don't necessarily need carbon fiber.
What does Carbon change?
Carbon-fiber-reinforced plastic allows for a different design.
The fibers can be precisely incorporated into the component.
This allows for a combination of high stiffness and low weight.
At the same time, the manufacturing process is significantly more complex.
Lamination, curing, demolding, finishing, and assembly require significantly more manual labor than a highly automated mass-production process.
Carbon fiber is therefore not just a quick fix for reducing weight, but rather a different design and manufacturing concept.
Why is Carbon of interest to ASPHALTKIND?
Our roof box wasn't designed for the broadest possible market.
It was developed based on the question of what a roof box on a sports car should look like and how it should function.
As a result, aerodynamics, weight, stability, and design played a greater role from the very beginning.
Carbon fits these specifications perfectly.
In addition, small-batch production allows us to offer customized solutions for special vehicles.
We don't have to build a box for 100,000 cars. We can configure a box for this exact car.
Visible carbon is more than just a decorative element
In many products, carbon is used solely as a decorative pattern.
In a true CFRP structure, however, the fiber is part of the component.
This is particularly interesting for customers whose vehicles already feature a lot of carbon fiber.
Porsche GT3 RS, McLaren, Lamborghini, and Ferrari use this material in numerous high-performance components.
A clear carbon-fiber roof box therefore fits into the same technical material universe.
Why is a carbon-fiber roof box more expensive?
The price is determined by several factors.
Material costs are higher.
The manufacturing process involves a great deal of manual labor.
Small-batch production spreads tooling and development costs across significantly fewer products.
In addition, custom configurations include paint, finishes, and vehicle-specific mounting solutions.
A carbon-fiber roof box is therefore not a cheap substitute for a plastic box, but rather a different product category.
Which solution makes sense?
For a family station wagon that needs a roof box twice a year, a classic, high-quality plastic box may be the more sensible choice.
For a custom-configured GT3 RS, Ferrari, or Lamborghini, other criteria may be more important.
In that case, materials, design, vehicle connectivity, and customization play a greater role.
That's exactly where we position ASPHALTKIND.
Frequently Asked Questions About Carbon Fiber and Plastic Roof Boxes
Is carbon always lighter than plastic?
Not necessarily. The actual weight depends on the design, material composition, size, hardware, paint finish, and features.
Is a carbon-fiber roof box more durable?
CFRP offers very high specific stiffness and strength. However, the specific design of the entire component is always the decisive factor.
Why is a carbon-fiber roof box more expensive?
Materials, handcrafted work, small-batch production, finishing, and customization result in significantly higher costs than automated mass production.
Do I absolutely need carbon fiber for a sports car?
No. Carbon fiber is not a technical requirement. However, it is particularly well-suited for customers who are looking for lightweight construction, authentic materials, customization, and a performance-oriented product line.
For us, carbon is not an end in itself
We don't use this material just because "carbon" sounds good on a spec sheet.
We use it because it fits the concept of the product.
Designed for Performance.