{"product_id":"bmw-s58-downpipe","title":"BMW S58 Downpipe","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:20e8d836-18cb-436e-b673-477f7adad086-3\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:20e8d836-18cb-436e-b673-477f7adad086-3\" data-turn-id-container=\"request-WEB:20e8d836-18cb-436e-b673-477f7adad086-3\" data-testid=\"conversation-turn-8\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"755abfb8-ad68-401a-854e-23c222561cf7\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"337\"\u003eUnlock the full potential of your BMW S58 engine with these high-performance Catless Downpipes for the G80 M3 and G82\/G83 M4. Engineered to maximize exhaust flow, reduce backpressure, and improve turbo efficiency, these downpipes deliver substantial horsepower gains, faster turbo spool, and a significantly more aggressive exhaust tone.\u003c\/p\u003e\n\u003cp data-start=\"341\" data-end=\"622\"\u003eBy replacing the restrictive factory catalytic converters, these downpipes allow your turbochargers to operate more efficiently, resulting in improved throttle response and increased overall performance. Perfect for enthusiasts looking to take their S58 platform to the next level.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1570i2o\" data-start=\"626\" data-end=\"651\"\u003ePerformance Benefits:\u003c\/h3\u003e\n\u003cul data-start=\"653\" data-end=\"1176\"\u003e\n\u003cli data-section-id=\"5ohv45\" data-start=\"653\" data-end=\"796\"\u003e\n\u003cstrong data-start=\"655\" data-end=\"675\"\u003eUp to 30HP Gains\u003c\/strong\u003e – Proven horsepower increases on tuned S58 vehicles with stock turbos, with even greater gains on upgraded turbo setups.\u003c\/li\u003e\n\u003cli data-section-id=\"15tgfkb\" data-start=\"798\" data-end=\"886\"\u003e\n\u003cstrong data-start=\"800\" data-end=\"822\"\u003eFaster Turbo Spool\u003c\/strong\u003e – Reduced exhaust restriction helps turbos build boost quicker.\u003c\/li\u003e\n\u003cli data-section-id=\"svddjl\" data-start=\"888\" data-end=\"975\"\u003e\n\u003cstrong data-start=\"890\" data-end=\"918\"\u003eAggressive Exhaust Sound\u003c\/strong\u003e – Louder, deeper exhaust tone with enhanced turbo sound.\u003c\/li\u003e\n\u003cli data-section-id=\"1bttbzv\" data-start=\"977\" data-end=\"1061\"\u003e\n\u003cstrong data-start=\"979\" data-end=\"1003\"\u003eSmooth Mandrel Bends\u003c\/strong\u003e – Optimized exhaust flow while minimizing unwanted drone.\u003c\/li\u003e\n\u003cli data-section-id=\"vdqkwi\" data-start=\"1063\" data-end=\"1176\"\u003e\n\u003cstrong data-start=\"1065\" data-end=\"1092\"\u003eIntegrated Flex Section\u003c\/strong\u003e – Helps reduce stress, movement, and vibration for improved durability and fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"zvvqrs\" data-start=\"1180\" data-end=\"1207\"\u003eFat Boy Upgrade Option:\u003c\/h3\u003e\n\u003cp data-start=\"1209\" data-end=\"1358\"\u003eUpgrade to the \u003cstrong data-start=\"1224\" data-end=\"1243\"\u003eFat Boy Version\u003c\/strong\u003e featuring larger \u003cstrong data-start=\"1261\" data-end=\"1276\"\u003e3.5” piping\u003c\/strong\u003e compared to the standard 3” design for maximum airflow and performance potential.\u003c\/p\u003e\n\u003ch3 data-section-id=\"q4c1cr\" data-start=\"1362\" data-end=\"1375\"\u003eFeatures:\u003c\/h3\u003e\n\u003cul data-start=\"1377\" data-end=\"1683\"\u003e\n\u003cli data-section-id=\"1l8i3bs\" data-start=\"1377\" data-end=\"1465\"\u003eCompatible with both \u003cstrong data-start=\"1400\" data-end=\"1425\"\u003eLeft-Hand Drive (LHD)\u003c\/strong\u003e and \u003cstrong data-start=\"1430\" data-end=\"1456\"\u003eRight-Hand Drive (RHD)\u003c\/strong\u003e vehicles\u003c\/li\u003e\n\u003cli data-section-id=\"13mquw\" data-start=\"1467\" data-end=\"1510\"\u003ePrecision-engineered for OEM-like fitment\u003c\/li\u003e\n\u003cli data-section-id=\"pez0ag\" data-start=\"1512\" data-end=\"1555\"\u003eHigh-quality stainless steel construction\u003c\/li\u003e\n\u003cli data-section-id=\"1shio4m\" data-start=\"1557\" data-end=\"1625\"\u003eLifetime warranty against manufacturing defects and fitment issues\u003c\/li\u003e\n\u003cli data-section-id=\"1wfnp8f\" data-start=\"1627\" data-end=\"1649\"\u003e90-day return period\u003c\/li\u003e\n\u003cli data-section-id=\"rtx5l1\" data-start=\"1651\" data-end=\"1683\"\u003eShips within 1–2 business days\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"7fworu\" data-start=\"1687\" data-end=\"1713\"\u003eVehicle Compatibility:\u003c\/h3\u003e\n\u003cul data-start=\"1715\" data-end=\"1759\"\u003e\n\u003cli data-section-id=\"szz98r\" data-start=\"1715\" data-end=\"1733\"\u003e2021+ BMW G80 M3\u003c\/li\u003e\n\u003cli data-section-id=\"17k78zx\" data-start=\"1735\" data-end=\"1759\"\u003e2021+ BMW G82 \/ G83 M4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1763\" data-end=\"1940\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eTake your BMW S58 performance to the next level with upgraded Catless Downpipes — delivering more power, quicker response, and the aggressive sound your M car was meant to have.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Envision Performance LLC","offers":[{"title":"No \/ Standard 3\"","offer_id":44217664962659,"sku":null,"price":459.99,"currency_code":"USD","in_stock":true},{"title":"No \/ Upgrade 3.5\"","offer_id":44217664995427,"sku":null,"price":559.99,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Standard 3\"","offer_id":44217665028195,"sku":null,"price":699.99,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Upgrade 3.5\"","offer_id":44217665060963,"sku":null,"price":699.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/3198\/2435\/files\/IMG_4681__03891_2d57d48a-55be-4fed-9d8a-7cdc2f9d0b37.jpg?v=1779891340","url":"https:\/\/www.envisionperformancellc.com\/products\/bmw-s58-downpipe","provider":"Envision Performance LLC","version":"1.0","type":"link"}