2017–2019 Audi A4 S-Line / S4 B9 Sedan Single Deck Rear Trunk Spoiler – Carbon Fiber
2017–2019 Audi A4 S-Line / S4 B9 Sedan Single Deck Rear Trunk Spoiler – Carbon Fiber
Add a refined finishing detail to the trunk lid of your Audi A4 B9 S-Line or S4 Sedan with this carbon fiber trunk spoiler. The single-deck profile complements the factory body lines with a subtle yet purposeful upgrade that lifts the rear profile without an overly aggressive appearance.
Build
- Material: Genuine carbon fiber, CNC machined and vacuum moulded for precise spoiler geometry, consistent panel quality, and an authentic weave appearance over carbon-look ABS or painted plastic alternatives
- Surface finish: High-gloss epoxy-polished top coat that showcases the natural carbon weave and resists UV exposure, moisture, and surface degradation through sustained outdoor and driving use
- Configuration: Single-deck spoiler, supplied as a single piece
- Weight: Lightweight carbon construction adds negligible weight to the trunk lid
Design & Finish
- Understated profile: Clean, refined single-deck line that adds a performance-inspired finishing detail without altering the character of the factory body design
- Carbon aesthetic: Directional weave and gloss finish complement the sporty S-Line and S4 bodywork for a coordinated, motorsport-grade look
- Factory-style integration: Precision-molded to follow the contours of the factory trunk lid for a clean, seamless fit
Fitment
- 2017–2019 Audi A4 S-Line B9 Sedan (4-door)
- 2017–2019 Audi S4 B9 Sedan (4-door)
- Fits the factory Sedan trunk lid only — not compatible with aftermarket trunk configurations
- Body style: Sedan only — not confirmed for Avant or Allroad body styles
Package Contents
- 1 × carbon fiber rear trunk spoiler
- Pre-applied adhesive tape for installation
Installation
- No-drill, adhesive-mounted: Installs with the included adhesive tape — no drilling and no permanent modification to the factory trunk lid
- Surface prep: Thoroughly clean, degrease, and dry the trunk lid at the spoiler position before fitting to ensure maximum adhesion
- Alignment: Dry-fit and check the spoiler sits centred and symmetrical across the trunk lid before final adhesion
- Professional installation recommended for the best positioning, panel alignment, and finish
Before You Install
- Confirm your car is an A4 S-Line or S4 B9 Sedan (2017–2019) before ordering — fitment is not confirmed for the Avant or Allroad
- Work in moderate temperatures and allow the adhesive to cure fully before washing the car
- Installation is reversible, but adhesive removal and re-prep may be required if the spoiler needs repositioning
Ships within 1-2 business days.
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2017–2019 Audi A4 S-Line / S4 B9 Sedan Single Deck Rear Trunk Spoiler – Carbon Fiber
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Please read our FAQs page to find out more.
Are OEM products more expensive than aftermarket alternatives?
OEM products might have a higher upfront cost compared to aftermarket parts, but their superior quality and durability often make them a more cost-effective choice over time. Investing in OEM ensures you’re getting parts specifically designed for your vehicle, which can lead to better performance and longevity.
Can I purchase OEM parts online or do I need to visit a dealership?
You don’t need to visit a dealership to get OEM parts. You can conveniently purchase genuine OEM components from authorized distributors and reputable online retailers like Turbo Tech Performance. Our online store provides a wide selection of high-quality parts delivered straight to your door.
Are parts from brands like Mopar, ACDelco, and Motorcraft interchangeable between different vehicle brands?
No, parts from Mopar, ACDelco, and Motorcraft are typically designed for specific vehicle brands. It’s crucial to ensure compatibility with your vehicle’s make and model by checking part numbers and consulting with a knowledgeable expert.
Can I install OEM parts myself, or is it better to have a professional handle it?
While some OEM parts can be installed by DIY enthusiasts, the complexity of installation can vary. For the best results and to ensure proper fitment and performance, we recommend having a trained mechanic install the parts, especially if you’re unfamiliar with automotive repairs.
Do OEM parts come with a warranty?
Yes, many OEM auto parts come with a manufacturer’s warranty that covers defects or issues. Be sure to check the warranty details for each part at the time of purchase, and keep your receipt for any potential warranty claims.