Aero & Body Styling

Does your car need sharper lines, or do you want to manage the airflow under and behind the bodywork? Front splitters, side skirts, rear wings, diffusers and complete body kits change the look of your car and can, depending on their design, affect the airflow on the road and on track. This category is for you if you are planning a project focused on styling or aerodynamics.

What splitters, skirts, wings and diffusers do

A front splitter sits under the front bumper and can reduce the amount of air flowing under the car, while a diffuser at the rear can guide the air out behind the car in a more controlled way. Side skirts typically close the gap between the wheels, and a rear wing can generate downforce on the rear axle. The effect depends on design, speed and the rest of the car's aerodynamics; in everyday driving the effect is often mostly visual. If you want to change the whole look in one go, complete body kits are also available.

How to choose the right part

• Fitment: Many parts are made for specific models, e.g. Akrapovic diffusers for the BMW M2 (G87) and Porsche 911 GT3 (992) or Ford Racing's front splitter kit for the Mustang GT500. Check the model year and variant.
• Material and finish: The Akrapovic diffusers are available, for example, in carbon fibre with a matte or high-gloss finish and in chopped carbon.
• Balance: Extra downforce at the rear without corresponding downforce at the front can change the car's handling, so look at the parts as a whole.
• Ground clearance: A low splitter can be damaged by kerbs, ramps and speed bumps.

Other brands in this category include GReddy, Remus and Cusco.

Installation, inspection and maintenance

Some parts use the original mounting points, while others require drilling or extra brackets – e.g. Cusco brackets that make it possible to fit a later OEM diffuser to an older Impreza STi. Whether a part is road legal depends on the product and the car, so check the approval for the specific part number before installation. Clear-coated carbon fibre should be washed gently and can be protected with wax or paint sealant to preserve the finish.

Frequently asked questions

What is the difference between a spoiler and a rear wing?

A spoiler typically sits close to the bodywork and disrupts the airflow, while a rear wing is raised with a profile that can create downforce. How much depends on profile, angle and speed.

Should I choose matte or high-gloss carbon fibre?

It is mainly a question of looks. A matte finish gives a more subdued look, while high gloss highlights the structure of the material. Both finishes benefit from gentle washing and protection against UV light.

Can I fit a front splitter or diffuser myself?

It depends on the part. Some are mounted in the original mounting points, others require drilling, brackets or removal of the bumper. Read the installation instructions for the specific part number before you start.

Will my car pass inspection with a splitter, wing or body kit?

It depends on the product and the car. Protruding parts, sharp edges and changed ground clearance can be relevant. Check the approval for the specific part number, and consider talking to the inspection centre before installation.