{"product_id":"2020-2022-audi-a4-s-line-s4-b9-sedan-rear-diffuser-pre-preg-dry-carbon-fiber","title":"2020–2022 Audi A4 S-Line \/ S4 B9 Sedan Rear Diffuser – Pre-Preg Dry Carbon Fiber","description":"\u003ch2\u003e2020–2022 Audi A4 S-Line \/ S4 B9 Sedan Rear Diffuser – Pre-Preg Dry Carbon Fiber\u003c\/h2\u003e\n\n\u003cp\u003eGive the rear end of your Audi A4 S-Line or S4 B9 the same attention as the front with this pre-preg dry carbon fiber rear diffuser. Molded to the factory rear bumper lines, it adds depth and sharp edges for a refined, motorsport-inspired presence without going over the top.\u003c\/p\u003e\n\n\u003ch3\u003eBuild\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Pre-preg dry carbon fiber in a 3K twill weave — the resin is pre-impregnated into the weave under controlled conditions before autoclave curing, giving superior strength while keeping weight to a minimum, a consistent weave, and a lighter finished component than standard wet carbon\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturing:\u003c\/strong\u003e Autoclave cured, precision 3D-moulded for accurate fitment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface finish:\u003c\/strong\u003e Deep high-gloss black clear coat that highlights the 3K twill weave and provides long-lasting surface protection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Single-piece diffuser for the lower rear bumper\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 depth and sharp lower-rear edges for a more planted, motorsport-inspired rear end\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon aesthetic:\u003c\/strong\u003e Refined 3K twill dry carbon weave and high-gloss clear coat deliver premium contrast against the factory paint\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFactory-style integration:\u003c\/strong\u003e Precision-molded to the contours of the factory rear bumper for a clean, seamless fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003e2020–2022 Audi A4 S-Line B9 Sedan\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e2020–2022 Audi S4 B9 Sedan\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFits the A4 S-Line and S4 factory rear bumper only\u003c\/strong\u003e — not compatible with the standard non-S-Line A4 or aftermarket bumpers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × pre-preg dry carbon fiber rear diffuser\u003c\/li\u003e\n  \u003cli\u003eMounting 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 mounting screws for a secure, rattle-free fit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrilling required:\u003c\/strong\u003e Screw fixing pierces 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\u003eAlignment:\u003c\/strong\u003e Dry-fit and check the diffuser sits centred and even across the bumper before driving any screws\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional installation recommended\u003c\/strong\u003e for correct 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\u003eConfirm your car is an A4 S-Line or S4 B9 Sedan\u003c\/strong\u003e (2020–2022) before ordering — this will not fit the standard non-S-Line A4\u003c\/li\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, as holes cannot be undone\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":"Air Freight (1-2 Weeks)","offer_id":53033795617088,"sku":"1600573580554","price":969.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0876\/1579\/9616\/files\/1_2e810df5-94e9-48e6-b2e2-078139ca4165.jpg?v=1787035261","url":"https:\/\/kar-plus.com\/products\/2020-2022-audi-a4-s-line-s4-b9-sedan-rear-diffuser-pre-preg-dry-carbon-fiber","provider":"KAR PLUS PERFORMANCE","version":"1.0","type":"link"}