{"product_id":"mad-bmw-f-g-chassis-b46-downpipe-220-230-320-330-420-430-730-catted","title":"MAD BMW F \u0026 G Chassis B46  Downpipe 220 230 320 330 420 430 730 Catted","description":"\u003cp\u003eUpgrade the stock B46 downpipe to the MAD B46 Catted Downpipe for more airflow, power and a cleaner exhaust tone — while keeping your setup street-friendly. The built-in high-flow cat reduces restriction versus the factory unit so the turbo spools quicker and pushes more power, all while preserving drivability.\u003c\/p\u003e\n\u003cp\u003eOn a tuned B46 with the stock turbo, expect gains of up to 30 HP — even more on upgraded turbos. The flex section absorbs stress from engine movement and heat cycles for a long-lasting, reliable upgrade.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-flow 200-cell catalytic converter.\u003c\/li\u003e\n\u003cli\u003eCompatible with right- and left-hand-drive vehicles.\u003c\/li\u003e\n\u003cli\u003eSmooth mandrel bends for maximum flow with no drone, plus a flex section.\u003c\/li\u003e\n\u003cli\u003eLifetime warranty on defects and fitment; 90-day return; ships in 1–2 business days; direct bolt-on fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment (U.S. B46 models only; not compatible with OPF vehicles)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2016+ BMW 120i \u0026amp; 125i\u003c\/li\u003e\n\u003cli\u003e2016+ BMW 220i \u0026amp; 230i\u003c\/li\u003e\n\u003cli\u003e2016+ BMW 320i, 330e \u0026amp; 330i (F \u0026amp; G chassis)\u003c\/li\u003e\n\u003cli\u003e2016+ BMW 420i \u0026amp; 430i\u003c\/li\u003e\n\u003cli\u003e2020+ Toyota Supra 2.0\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":51574530310200,"sku":"MAD-132","price":329.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1775\/7947\/files\/WhatsApp_Image_2025-07-10_at_11.50.37_0b10ca79__36713.1754325361.386.513.jpg?v=1764906251","url":"https:\/\/korespeed.com\/products\/mad-bmw-f-g-chassis-b46-downpipe-220-230-320-330-420-430-730-catted","provider":"KORE SPEED","version":"1.0","type":"link"}