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Add-On · Left & Right Pair
Side Skirts
Extends the lower side profile for a longer, more planted visual stance. Installs using compatible factory screw locations with automotive adhesive support.
Build a Coordinated B9.5 A4/S4 Exterior
Select the carbon fiber component that fits your build—from a focused grille accent to a complete front, side and rear transformation. Each piece follows the original body lines for a cohesive OEM+ appearance.
2020–2024A4/S4 B9.5 Sedan
Real 3K Carbon FiberNot printed carbon-look plastic
Matte or GlossyMatch your existing build
6 Component ChoicesChoose only what you need
Build Your Kit Your Way This listing does not automatically include all six components. The price and package are for the component selected above. To create the full exterior setup, add each desired component to your cart separately in the same finish.
Choose Your Upgrade
Start with one high-impact area or coordinate several components for a consistent front-to-rear carbon fiber theme.
Add-On · 1 Piece
Front Splitter
Adds a lower, sharper front profile while following the compatible factory bumper shape. Uses factory mounting locations with adhesive support.
Adhesive Overlay · 1 Piece
Grille Trim
Adds real carbon fiber around the compatible grille area without replacing the complete grille. A focused upgrade with no drilling required.
Adhesive Overlay · Left & Right Pair
Fog Light Grilles
Frames the lower front-bumper openings with matching carbon fiber detail. Installs over the compatible original surfaces using pre-applied adhesive.
Lower-Bumper Upgrade · 1 Piece
Rear Diffuser
Creates a more defined rear profile and coordinates with compatible exhaust-tip upgrades. Factory bumper and exhaust configuration must be checked before ordering.
Mechanical Fitment · Selected Set
Exhaust Tips
A vehicle-specific exhaust-end upgrade—not a tape-on cover. A4 and S4 exhaust layouts can differ, and professional installation is recommended.
Real Carbon Fiber, Two Finish Options
Choose one finish across all selected components for the most consistent appearance.
Glossy Carbon Fiber
A clear, reflective surface that emphasizes weave depth and creates stronger contrast against the body color.
Matte Carbon Fiber
A lower-reflection technical finish suited to understated builds and matte or satin exterior accents.
Fitment Check
Year alone is not enough. Confirm the B9.5 generation, sedan body style and original bumper or exhaust configuration.
Designed For
- 2020–2024 Audi A4 B9.5 Sedan
- 2020–2024 Audi S4 B9.5 Sedan
- Compatible original exterior configuration
Not Compatible With
- 2016–2019 A4/S4 B9.0
- A4 Avant, A4 Allroad or RS4
- A5/S5/RS5 or other vehicle models
- Modified bumpers, diffusers or exhaust systems unless separately verified
Not Sure Which Version Fits?
Before ordering, email your vehicle year, model and clear photos of the relevant front, side or rear area to Service@asigncar.com. We can help check visual compatibility.
Installation Depends on the Component
These six choices do not share one installation method. Review the correct method before purchase.
| Component | Installation Type | Recommendation |
|---|---|---|
| Grille Trim / Fog Light Grilles | Adhesive-backed overlay | Clean, test-fit, apply and allow the adhesive to cure before washing. |
| Side Skirts / Front Splitter | Add-on using compatible factory screw locations and adhesive support | Test-fit first; professional installation is recommended for best alignment. |
| Rear Diffuser | Lower-bumper component using compatible factory mounting locations | Professional installation is recommended. Check exhaust and bumper clearance first. |
| Exhaust Tips | Mechanical exhaust fitment; not adhesive | Professional installation recommended. Cutting, adjustment or fastening may be required. |
What Is Included?
You will receive only the component and finish selected above. Vehicle parts used for demonstration and the other carbon fiber components shown in photos are not included.
Component Quantity
- Side Skirts: 1 left/right pair
- Front Splitter: 1 piece
- Rear Diffuser: 1 piece
- Fog Light Grilles: 1 left/right pair
- Grille Trim: 1 piece
- Exhaust Tips: 1 selected set
Installation Materials
Automotive adhesive is included where applicable. Some larger parts reuse compatible factory mounting points or hardware. Exhaust-related installation materials and workshop labor are not included unless specifically stated in the selected option.
Frequently Asked Questions
Does one order include the complete six-piece kit?
No. This is a component-based listing. One selection includes only the selected component. Add each desired option separately to build a complete setup.
Will these parts fit every 2020–2024 Audi A4 or S4?
They are intended for compatible B9.5 A4/S4 sedans, but grille, bumper and exhaust configurations can vary. Compare the product photos and request a photo-based fitment check when uncertain.
Are the grille pieces complete replacements?
No. The grille trim and fog light grille choices are adhesive-backed overlays that install over compatible original surfaces.
Are the exhaust tips tape-on covers?
No. The exhaust tips require mechanical exhaust fitment. Professional installation is recommended, and the fitting procedure depends on the original A4 or S4 exhaust layout.
Do these parts increase horsepower or fuel economy?
These products are sold primarily as lightweight, performance-inspired exterior styling upgrades. Specific horsepower, acceleration, downforce or fuel-economy gains are not claimed.
Should I choose matte or glossy?
Choose glossy for stronger reflections and more visible weave depth. Choose matte for a subtler technical appearance. Match your existing carbon fiber parts whenever possible.
