{"product_id":"mad-bmw-b58-2025-gen-3-m340-m440-5-200-cell-catted-downpipe","title":"MAD BMW B58 2025+ Gen 3 M340 M440 5\" 200 Cell Catted Downpipe","description":"\u003cp\u003eTake your 2025+ BMW M340 or M440 further with the MAD B58 Gen 3 5\" 200-Cell Catted Downpipe — engineered for enthusiasts who want a cleaner, more refined upgrade. Built from premium 304 stainless steel with a high-flow catalytic converter, it delivers strong power gains, more airflow and quicker turbo response, all without the fuel smell that comes with a catless design.\u003c\/p\u003e\n\u003cp\u003eYou get a deeper, richer, more aggressive note than stock, but smoother and cleaner than catless — the ideal balance of performance and everyday drivability for street and track. Precision welds and direct bolt-on fitment make installation hassle-free.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-quality 304 stainless steel construction.\u003c\/li\u003e\n\u003cli\u003e5-inch diameter for a significant airflow improvement over stock.\u003c\/li\u003e\n\u003cli\u003eHigh-flow catalytic converter eliminates the fuel smell common with catless downpipes.\u003c\/li\u003e\n\u003cli\u003eDeeper, aggressive yet refined exhaust note.\u003c\/li\u003e\n\u003cli\u003eNoticeable horsepower and torque increases.\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on fitment for hassle-free installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2025+ BMW M340\u003c\/li\u003e\n\u003cli\u003e2025+ BMW M440\u003c\/li\u003e\n\u003cli\u003e2025+ BMW X3 M50 (G45)\u003c\/li\u003e\n\u003cli\u003e2025+ BMW X4 M50 (G46)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEmissions disclaimer:\u003c\/strong\u003e This product is not legal for sale or use on pollution-controlled vehicles operated on public roads and is intended for off-road, race, or closed-course competition use only. You are responsible for compliance with all applicable emissions laws; use on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws. Please check your local laws before purchase and installation.\u003c\/p\u003e\n\u003cp\u003eShips from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email \u003ca href=\"mailto:support@korespeed.com\"\u003esupport@korespeed.com\u003c\/a\u003e.\u003c\/p\u003e","brand":"MAD","offers":[{"title":"Default Title","offer_id":51574530015288,"sku":"MAD-128","price":369.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1775\/7947\/files\/WhatsApp_Image_2025-05-16_at_11.10.08_b895cef3__36890.1749140419.386.513.jpg?v=1764906212","url":"https:\/\/korespeed.com\/products\/mad-bmw-b58-2025-gen-3-m340-m440-5-200-cell-catted-downpipe","provider":"KORE SPEED","version":"1.0","type":"link"}