{"product_id":"mad-bmw-b58-2025-gen-3-m340-m440-5-200-cell-catted-downpipe-mad-128","title":"MAD BMW B58 2025+ Gen 3 M340 M440 5\" 200 Cell Catted Downpipe  - MAD-128","description":"\u003cp data-end=\"793\" data-start=\"427\"\u003eUnlock the true performance potential of your BMW with the \u003cstrong data-end=\"562\" data-start=\"486\"\u003eMAD BMW B58 2025+ Gen 3 M340 5\" 200 Cell Catted Downpipe (Part Number: MAD-128)\u003c\/strong\u003e. Designed for enthusiasts who demand power, refinement, and street drivability, this premium downpipe is constructed from high-grade 304 stainless steel and features a \u003cstrong data-end=\"752\" data-start=\"731\"\u003e5-inch diameter\u003c\/strong\u003e for significantly improved exhaust flow.\u003c\/p\u003e \u003cp data-end=\"1085\" data-start=\"795\"\u003eEngineered with a \u003cstrong data-end=\"846\" data-start=\"813\"\u003ehigh-flow catalytic converter\u003c\/strong\u003e, this system reduces the fuel odor associated with catless setups while maintaining a powerful, deep exhaust note. The result is an aggressive yet clean tone that enhances your driving experience without compromising emissions compliance.\u003c\/p\u003e \u003cp data-end=\"1339\" data-start=\"1087\"\u003ePerfect for both street and occasional track use, this catted downpipe delivers \u003cstrong data-end=\"1212\" data-start=\"1167\"\u003enoticeable gains in horsepower and torque\u003c\/strong\u003e, improved turbo spool, and a more responsive throttle—while remaining easy to install thanks to its \u003cstrong data-end=\"1338\" data-start=\"1313\"\u003edirect bolt-on design\u003c\/strong\u003e.\u003c\/p\u003e \u003chr data-end=\"1344\" data-start=\"1341\"\u003e \u003cp data-end=\"1528\" data-start=\"1346\"\u003e\u003cstrong data-end=\"1360\" data-start=\"1346\"\u003eFitment:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eFits \u003cstrong data-end=\"1429\" data-start=\"1368\"\u003e2025+ BMW M340i models equipped with the Gen 3 B58 engine\u003c\/strong\u003e.\u003c\/li\u003e \u003cli\u003eModels include: \u003cstrong data-end=\"1489\" data-start=\"1450\"\u003eBMW G20 M340i and G21 M340i Touring\u003c\/strong\u003e, production years \u003cstrong data-end=\"1526\" data-start=\"1508\"\u003e2025 and newer\u003c\/strong\u003e.\u003c\/li\u003e \u003cli\u003e BMW X3 G45 M50 2025+ \u003c\/li\u003e \u003cli\u003e BMW X4 G46 M50 2025+ \u003c\/li\u003e \u003c\/ul\u003e \u003chr data-end=\"1533\" data-start=\"1530\"\u003e \u003cp data-end=\"1555\" data-start=\"1535\"\u003e\u003cstrong data-end=\"1555\" data-start=\"1535\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMade from premium 304 stainless steel for long-lasting durability\u003c\/li\u003e \u003cli\u003eLarge 5-inch diameter increases airflow over stock for more power\u003c\/li\u003e \u003cli\u003eIntegrated high-flow catalytic converter for improved emissions and reduced fuel odor\u003c\/li\u003e \u003cli\u003eProduces a deeper, sportier exhaust note without harshness\u003c\/li\u003e \u003cli\u003eDirect bolt-on fitment — no cutting or welding required\u003c\/li\u003e \u003cli\u003eOptimized for both street performance and track reliability\u003c\/li\u003e \u003cli\u003eEngineered and built by \u003cstrong data-end=\"2009\" data-start=\"2002\"\u003eMAD\u003c\/strong\u003e for the Gen 3 BMW B58 engine\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eDisclaimer:\u003c\/strong\u003e\u003cbr\u003eFor race use only. This product is not certified for use on public roads and may not comply with local emissions regulations. Additionally, it does not prevent the illumination of the Check Engine Light (CEL). Please consult your local laws and regulations before installation.\u003c\/p\u003e","brand":"MAD","offers":[{"title":"Default Title","offer_id":43077225578705,"sku":"MAD-128","price":538.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0571\/1334\/6257\/files\/kies-motorsports-mastery-of-art-and-design-mad-bmw-b58-2025-gen-3-m340-m440-5-200-cell-catted-downpipe-mad-128-1224298481.jpg?v=1777324955","url":"https:\/\/speedfactorracing.com\/products\/mad-bmw-b58-2025-gen-3-m340-m440-5-200-cell-catted-downpipe-mad-128","provider":"Speed Factor","version":"1.0","type":"link"}