{"product_id":"2021-2023-audi-a3-s-line-s3-8y-sedan-rear-bumper-diffuser-carbon-fiber","title":"2021–2023 Audi A3 S-Line \/ S3 8Y Sedan Rear Bumper Diffuser – Carbon Fiber","description":"\u003ch2\u003e2021–2023 Audi A3 S-Line \/ S3 8Y Sedan Rear Bumper Diffuser – Carbon Fiber\u003c\/h2\u003e\n\n\u003cp\u003eTransform the rear end of your Audi S3 8Y or A3 S-Line Sedan with this carbon fiber rear bumper diffuser. Spanning 139 cm across the lower bumper, it adds width and a more aggressive lower rear profile that visually lowers the stance for a more purposeful, performance-oriented rear appearance.\u003c\/p\u003e\n\n\u003ch3\u003eBuild\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Genuine carbon fiber, autoclave cured using a 3D design and CNC milling process for precise diffuser geometry, consistent panel quality, and an authentic weave appearance over carbon-look ABS or fiberglass alternatives\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface finish:\u003c\/strong\u003e Polished and UV-protected finish that holds its deep gloss carbon weave appearance through sustained outdoor and driving exposure without fading or yellowing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Single-piece diffuser for the lower rear bumper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePanel width \u0026amp; weight:\u003c\/strong\u003e 139 cm across · approximately 1.15 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDesign \u0026amp; Aerodynamics\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAggressive stance:\u003c\/strong\u003e Diffuser profile adds width and visual weight to the lower rear for a more planted, track-inspired rear end\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-width coverage:\u003c\/strong\u003e The 139 cm span covers the lower rear bumper for an integrated, finished rear-end upgrade\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon aesthetic:\u003c\/strong\u003e Directional weave and gloss finish complement the factory 8Y bodywork for a coordinated, motorsport-grade look\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2021–2023 Audi S3 8Y Sedan\u003c\/strong\u003e (4-door)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2021–2023 Audi A3 S-Line 8Y Sedan\u003c\/strong\u003e (4-door)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFits the factory rear bumper only\u003c\/strong\u003e — not compatible with aftermarket or non-8Y bumper configurations\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody style:\u003c\/strong\u003e Sedan only — not confirmed for Sportback variants\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCheck your rear bumper shape against the product images before ordering\u003c\/strong\u003e — bumper detailing differs between trim levels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × carbon fiber rear bumper diffuser\u003c\/li\u003e\n  \u003cli\u003eSelf-tapping screws for installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScrew-mounted:\u003c\/strong\u003e Secures with the included self-tapping screws for a secure, rattle-free fit — no adhesive tape required\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrilling required:\u003c\/strong\u003e Self-tapping screws pierce the bumper, so this is a permanent modification rather than a reversible fit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface prep:\u003c\/strong\u003e Clean and degrease the rear bumper at the fixing locations before installation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional installation recommended\u003c\/strong\u003e for correct diffuser positioning, panel alignment, and a clean finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBefore You Install\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThis is a permanent, screw-mounted fitment\u003c\/strong\u003e — dry-fit and confirm placement carefully before driving any screws\u003c\/li\u003e\n  \u003cli\u003eConfirm your car is an 8Y \u003cstrong\u003eSedan\u003c\/strong\u003e before ordering — fitment is not confirmed for the Sportback\u003c\/li\u003e\n  \u003cli\u003eVerify your trim level and rear bumper shape against the product images before ordering\u003c\/li\u003e\n  \u003cli\u003eTake care when parking rear-in — lower rear panels sit close to kerbs and parking blocks\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"K2 Industries","offers":[{"title":"Default Title","offer_id":53033807413568,"sku":"1600788585634","price":749.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0876\/1579\/9616\/files\/1_7824bc45-2d87-4c46-81e1-8cb66a4b3b84.jpg?v=1787035395","url":"https:\/\/kar-plus.com\/products\/2021-2023-audi-a3-s-line-s3-8y-sedan-rear-bumper-diffuser-carbon-fiber","provider":"KAR PLUS PERFORMANCE","version":"1.0","type":"link"}