{"product_id":"carbon-fiber-rear-diffuser-audi-a5-s5-b9-2017-2019-kb-style-dual-exit","title":"Carbon Fiber Rear Bumper Diffuser For Audi A5 \/ S5 B9 2017–2019 | KB Style Dual Side Exit","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eTransform the rear end of your Audi A5 or S5 with this KB Style carbon fiber rear bumper diffuser, featuring an aggressive dual-side double-exit design built specifically for the B9 generation (2017–2019). One of the most impactful visual upgrades you can make to the rear of your car — no body shop, no full bumper replacement.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eCompatible vehicles\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-pre-wrap leading-[1.7]\"\u003e✅ Audi A5 B9 (F5) S-Line — Coupe \u0026amp; Sportback — 2017, 2018, 2019 ✅ Audi S5 B9 (F5) — Coupe \u0026amp; Sportback — 2017, 2018, 2019 ⚠️ Audi A5 B9 (non S-Line base trim) — fitment not guaranteed; the base bumper uses different mounting points and exhaust outlet positions ❌ Audi A5 \/ S5 B9.5 (2020–2024) — does NOT fit; the facelift bumper has a revised lower section ❌ Audi RS5 B9 — does NOT fit; the RS5 uses a completely different rear bumper with wider exhaust cutouts\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eImportant: S-Line \/ S5 bumper required\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eS-Line, non-S-Line, and S5 bumpers differ in shape and mounting points — never assume universal fitment. This diffuser is designed around the S-Line and S5 sport bumper profile. If your A5 is a base model without the S-Line package, the exhaust outlet positions and lower bumper shape will not align correctly. \u003cspan class=\"inline-flex\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eAbout the dual-side double-exit design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThis diffuser features two exit openings — one on each side — giving the rear end an RS5-inspired, wide-body look. If your car does not already have dual-side exhaust exits, modifications to the exhaust will be required to make use of both openings. If you are running a single-exit or centre-exit OEM exhaust, the diffuser can still be fitted aesthetically, but only one exit will be functional unless you have your exhaust modified by a specialist. \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eReal carbon fiber construction — not ABS, not hydrodipped carbon-look plastic\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNatural gloss black 2×2 twill weave finish\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDual-side double-exit design — RS5-inspired aggressive rear profile\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLightweight — far lighter than factory plastic valance\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eScratch-resistant and UV-protected clear coat finish to prevent fading or discolouration\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDesigned to replace the factory rear valance\/diffuser at OEM mounting locations\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNo bumper cutting required for standard S-Line \/ S5 fitment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eInstallation notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eProfessional installation is strongly recommended. The rear bumper must be removed to install this diffuser properly. If your exhaust exits are not already dual-side, an exhaust specialist will need to modify or reposition your tips to align with the openings. Hardware is not included — use quality self-tapping screws or bolts at the mounting tabs for a secure fit. \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-pre-wrap leading-[1.7]\"\u003eMaterial: Real Carbon Fiber Finish: Gloss Black (natural carbon weave) Style: KB Style Design: Dual Side Double Exit Colour: Carbon Black Fitment: 2017–2019 Audi A5 S-Line \/ S5 B9 (F5) — Coupe \u0026amp; Sportback Installation: Replaces factory rear valance at OEM mounting points (bumper removal required) Condition: Brand new\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eCare tip\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eApply UV protectant to the gloss black carbon surface every 3–6 months to reduce fading, and inspect mounting hardware annually for loosening due to thermal expansion. \u003cspan class=\"inline-flex\" data-state=\"closed\"\u003e\u003ca href=\"https:\/\/carinterior.alibaba.com\/question\/audi-a5-rear-diffuser-guide\" class=\"group\/tag relative h-[18px] rounded-full inline-flex items-center overflow-hidden -translate-y-px cursor-pointer\" target=\"_blank\"\u003e\u003cspan class=\"relative transition-colors h-full max-w-[180px] overflow-hidden px-1.5 inline-flex items-center font-small rounded-full border-0.5 border-border-300 bg-bg-200 group-hover\/tag:bg-accent-900 group-hover\/tag:border-accent-100\/60\"\u003e\u003cspan class=\"text-nowrap text-text-300 break-all truncate font-normal group-hover\/tag:text-text-200\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Carrera Custom Garage","offers":[{"title":"Default Title","offer_id":50790633570551,"sku":null,"price":729.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/7957\/6567\/files\/Hddb3714e0c8e4f8e9d1a76ec60dff003A.jpg?v=1779182593","url":"https:\/\/carreracustomgarage.com\/products\/carbon-fiber-rear-diffuser-audi-a5-s5-b9-2017-2019-kb-style-dual-exit","provider":"Carrera Custom Garage","version":"1.0","type":"link"}