{"product_id":"2018-2019-audi-a4-b9-sedan-rear-bumper-diffuser-carbon-fiber","title":"2018–2019 Audi A4 B9 Sedan Rear Bumper Diffuser – Carbon Fiber","description":"\u003ch2\u003e2018–2019 Audi A4 B9 Sedan Rear Bumper Diffuser – Carbon Fiber\u003c\/h2\u003e\n\n\u003cp\u003eTransform the lower rear profile of your Audi A4 B9 Sedan with this carbon fiber rear bumper diffuser. Spanning 130 cm across the lower bumper, it adds width and a more aggressive lower rear appearance with a deep gloss carbon black finish that visually lowers and widens the rear stance.\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 and vacuum moulded using a 3D design and CNC moulding 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 High-gloss epoxy-polished finish in carbon black that showcases the natural carbon weave and resists UV exposure, moisture, and road debris through sustained outdoor and driving use\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:\u003c\/strong\u003e 130 cm across\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\u003eComprehensive coverage:\u003c\/strong\u003e The 130 cm span covers the lower rear bumper for a complete, finished rear-end upgrade\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon aesthetic:\u003c\/strong\u003e Directional weave and gloss black finish complement the factory B9 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\u003cstrong\u003e2018–2019 Audi A4 B9 Sedan\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard A4 only\u003c\/strong\u003e — \u003cstrong\u003edoes not fit the S4\u003c\/strong\u003e, which uses a different rear bumper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFits the factory rear bumper only\u003c\/strong\u003e — not compatible with aftermarket bumper configurations\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody style:\u003c\/strong\u003e Sedan only — not confirmed for Avant or Allroad body styles\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\u003ePre-applied adhesive tape for installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo-drill, adhesive-mounted:\u003c\/strong\u003e Installs with the included adhesive tape — no drilling and no permanent modification to the factory rear bumper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface prep:\u003c\/strong\u003e Thoroughly clean, degrease, and dry the rear bumper before fitting to ensure maximum adhesion\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 final adhesion\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional installation recommended\u003c\/strong\u003e for correct panel alignment and finish quality\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 a standard A4, not an S4\u003c\/strong\u003e — this is moulded to the A4 rear bumper and will not fit the S4\u003c\/li\u003e\n  \u003cli\u003eVerify your body style is the Sedan before ordering — fitment is not confirmed for the Avant or Allroad\u003c\/li\u003e\n  \u003cli\u003eWork in moderate temperatures and allow the adhesive to cure fully before washing the car\u003c\/li\u003e\n  \u003cli\u003eInstallation is reversible, but adhesive removal and re-prep may be required if the diffuser needs repositioning\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"K2 Industries","offers":[{"title":"Default Title","offer_id":53033807511872,"sku":"60813335750","price":659.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0876\/1579\/9616\/files\/1_71dfe306-4047-4267-8013-86caed8cb128.jpg?v=1787035397","url":"https:\/\/kar-plus.com\/products\/2018-2019-audi-a4-b9-sedan-rear-bumper-diffuser-carbon-fiber","provider":"KAR PLUS PERFORMANCE","version":"1.0","type":"link"}