Audi S3/A3 S-Line 2017-2018 KB Style Carbon Fiber Rear Bumper Diffuser This high-quality carbon fiber diffuser features an aggressive aerodynamic design with integrated quad-exhaust cutouts and a signature checkered weave for a sporty, performance-driven upgrade. Engineered for perfect fitment on S-Line models, it enhances both style and rear-end downforce while maintaining OEM+ aesthetics.
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