{"product_id":"bmw-m4-g82-s58-downpipe","title":"BMW S58 Downpipe","description":"\u003cp\u003e\u003cstrong\u003eOne S58 downpipe that fits them all.\u003c\/strong\u003e A direct bolt-on flow upgrade for the BMW S58, TIG-welded from mandrel-bent 3.5\" \/ 89 mm T304 stainless and test-fitted in-house. Replaces the restrictive OEM catalyst for faster spool, a stronger note and the headroom your tune needs.\u003c\/p\u003e\u003ch3\u003eFitment — BMW S58 (2021–present)\u003c\/h3\u003e\u003ctable style=\"width:100%;border-collapse:collapse;margin:8px 0 4px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.16);\"\u003eChassis\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.16);\"\u003eModels\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.08);\"\u003eG80\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.08);\"\u003eM3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.08);\"\u003eG82 \/ G83\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.08);\"\u003eM4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.08);\"\u003eG87\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.08);\"\u003eM2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.08);\"\u003eF97\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.08);\"\u003eX3 M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.08);\"\u003eF98\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.08);\"\u003eX4 M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp style=\"font-size:.9em;\"\u003eOne downpipe fits every S58 car via the OEM mounting points.\u003c\/p\u003e\u003ch3\u003eWhy owners choose OKTAN\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFaster spool \u0026amp; sharper throttle\u003c\/strong\u003e — less back-pressure, earlier boost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper, more aggressive tone\u003c\/strong\u003e with no cabin drone at cruise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnlocks your tune\u003c\/strong\u003e beyond the restrictive OEM catalyst.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue bolt-on\u003c\/strong\u003e — no cutting or welding.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e T304 stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiping:\u003c\/strong\u003e 3.5\" \/ 89 mm mandrel-bent, back-purged TIG welds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange:\u003c\/strong\u003e CNC-machined V-band\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlex section:\u003c\/strong\u003e braided stainless\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e catless (base) or 200-cell high-flow — choose above\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensors:\u003c\/strong\u003e OEM O2 positions retained\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e lifetime against manufacturing defects\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eMade to order, free tracked US shipping, dispatched in 10–14 days. Fitment confirmed before you buy.\u003c\/em\u003e\u003c\/p\u003e","brand":"OKTAN","offers":[{"title":"Catless","offer_id":48747999559925,"sku":"DP-S58-G82","price":699.0,"currency_code":"USD","in_stock":true},{"title":"200 Cell High-Flow","offer_id":48748687786229,"sku":null,"price":819.0,"currency_code":"USD","in_stock":true},{"title":"Catless + Heat Shield","offer_id":48759642292469,"sku":null,"price":759.0,"currency_code":"USD","in_stock":true},{"title":"Catless + Install Kit","offer_id":48759642325237,"sku":null,"price":744.0,"currency_code":"USD","in_stock":true},{"title":"Catless + Heat Shield \u0026 Kit","offer_id":48759642358005,"sku":null,"price":804.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/6868\/5557\/files\/pexels-photo-31853143.jpg?v=1787608321","url":"https:\/\/oktanperformance.com\/products\/bmw-m4-g82-s58-downpipe","provider":"My Store","version":"1.0","type":"link"}