1-4 DAYS DELIVERY
2017 - 2024 Audi RS4 B9 BKSS Style Side Skirts Under Board
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100% ORIGINAL & HIGH-QUALITY
1-YEAR WARRANTY
Description
Description
Enhance the side profile of your Audi RS4 B9 with the BKSS Style Side Skirts Under Board. Made from high-quality CFRP, FGCF, and DryCF materials, these side skirts deliver a sleek, aerodynamic edge while improving high-speed stability. The extended under board design provides a track-inspired appearance without compromising daily drivability.
Perfectly designed for 2017–2024 Audi RS4 B9 models, this pair of side skirts installs cleanly with precise fitment for a factory-like finish.
Fitment: 2017-2024 Audi RS4 B9
Package Content: One pair of side skirts under board
Shipping Policy
Shipping Policy
United States: Free shipping available to the lower 48 states across all items. Other states will incur a shipping charge.
Worldwide: Free shipping is available for Complete Headlights, Taillights, DRLs. For custom headlight retrofits, carbon fiber products, and performance products, there will be a shipping charge.
Please note:
• For Retrofits, you are purchasing a headlight modification service.
• If you select "Shipping own headlights to BayOptiks for modification", you are required to send us your headlights.
• If you choose "Purchase new OEM headlights", we will order and modify a new OEM headlight for you.
• Once your customizations are complete, we will ship it to you!
Turnaround Time
Turnaround Time
- Complete Headlights: 3-5 business days for order processing plus shipping time.
- Custom & Pre-Built Headlights: 6-8 weeks depending on the complexity and component availability.
- New OEM and cores: 6-8 weeks plus an additional 4-8 weeks as these are special orders base on the vehicle VIN due to different versions (North American, European, etc.)
- DRLs, Taillights, Brake Pads, and Carbon Fiber Aero: 3-5 business days for order processing, plus shipping time.
- Lens Replacements: 1-3 weeks plus shipping time.
Please note, we do not have control over the time frames of our vendors, manufacturers, and delivery services as they may delay processes in regards to components and shipment.
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Testimonials
@dumpspec:
“I had to get a few parts installed from them and I'm very impressed with their team! Great attention to detail and I never had any problems with their install.”
@thicwhips:
“For me personally these headlights are 100% worth the cost and the time that it takes to get them done. It completely changed and modernized the front end.”
@kokpwr:
“They provide detailed step by step instructions that's easy to understand. Really appreciate the thoroughness.”
@DJ_dub:
“Ordering was easy and the process was really simple. My RGB color changing DTM rings were perfect for my show car build and exactly what I needed.”
@sirrealbuilds:
“The original OEM chromed out headlights just wasn't cutting it. The BayOptiks Vision retrofit completely changed my front end and I'm loving it.”
@smurf_f82:
“I had my OEM Ikon headlights custom blacked out with CSL Yellow DRLs and the outcome was exactly what I needed to complete my build.”