{"product_id":"active-autowerke-bmw-b58n-m340i-m440i-gesi-catted-downpipe-2025-and-newer","title":"Active Autowerke BMW B58N M340i M440i GESI Catted Downpipe (2025 and newer)","description":"\u003cp\u003eActive Autowerke B58N Gen-3 GESI catted downpipe for U.S.-spec 2025+ BMW M340i\/xDrive and M440i\/xDrive applications.\u003c\/p\u003e\n\u003ch3\u003eHighlights\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e5-inch 304 stainless-steel piping with 1.5 mm wall thickness, tapering to an 80 mm connection for the OEM exhaust system.\u003c\/li\u003e\n  \u003cli\u003e5-inch GESI high-flow catalytic converter.\u003c\/li\u003e\n  \u003cli\u003eTurbo-flange gasket included.\u003c\/li\u003e\n  \u003cli\u003eVendor states that no performance tune is needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003e2025–2026 U.S.-spec BMW M340i\/xDrive (G20) and M440i\/xDrive (G22\/G23\/G26) with B58B30O1 engine code. Not verified for non-U.S., RHD, or OPF-equipped vehicles.\u003c\/p\u003e\n\u003ch3\u003eBefore ordering\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eVendor notes that replacing the factory GPF downpipe requires dropping the subframe and estimates 9–10 hours of labor.\u003c\/li\u003e\n  \u003cli\u003eConfirm vehicle configuration and local emissions requirements before purchase or installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eVendor warranty: 5 years\/50,000 miles on shell and tube ends, and 2 years\/25,000 miles on the catalytic core for the original purchaser. The vendor states that excessive burble beyond stock can void the warranty.\u003c\/p\u003e","brand":"Active Autowerke","offers":[{"title":"Catted DP w turbo flange gasket","offer_id":42764500828245,"sku":"11-062G","price":2499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0074\/3702\/5395\/files\/kies-motorsports-active-autowerke-active-autowerke-bmw-b58n-m340i-m440i-gesi-catted-downpipe-2025-and-newer-catted-dp-w-turbo-flange-gasket-1250583607.jpg?v=1784732630","url":"https:\/\/www.kiesmotorsports.com\/products\/active-autowerke-bmw-b58n-m340i-m440i-gesi-catted-downpipe-2025-and-newer","provider":"Kies Motorsports","version":"1.0","type":"link"}