{"product_id":"mad-bmw-b58-2025-gen-3-m340-m440-4-5-downpipe-catless","title":"MAD BMW B58 2025+ Gen 3 M340 M440 4.5\" Downpipe Catless","description":"Enhance your BMW's performance with the MAD BMW B58 Gen 3 Catless Downpipe, specifically engineered for the 2025+ BMW M340 \u0026amp; M440. Crafted from premium 304 stainless steel, this 4.5-inch downpipe guarantees optimal exhaust flow, durability, and resistance to corrosion, providing the absolute best quality and longevity.\r\nBy eliminating restrictive factory catalytic converters, the MAD catless downpipe significantly boosts horsepower, sharpens throttle response, and reduces turbo lag, delivering an exhilarating driving experience. Precision-engineered welds and exact fitment ensure a seamless, bolt-on installation without hassles or modifications.\r\nEnjoy an aggressive, sporty exhaust note and unparalleled performance gains. The MAD downpipe is a must-have upgrade for both daily-driven enthusiasts and track-focused drivers seeking to unlock their BMW’s full potential.\r\nFeatures:\r\n\r\n\r\nHigh-grade 304 stainless steel for unmatched quality and durability\r\n\r\n\r\n4.5-inch piping diameter for improved exhaust flow and performance\r\n\r\n\r\nSignificant boost in horsepower and torque\r\n\r\n\r\nEnhanced throttle response and reduced turbo lag\r\n\r\n\r\nAggressive, deep, and sporty exhaust tone\r\n\r\n\r\nEasy direct bolt-on installation\r\n\r\n\r\nUpgrade to MAD quality—experience superior performance, unmatched reliability, and thrilling sound for your 2025+ BMW M340 \u0026amp; M440.\r\n \r\nFitment:\r\n2025+ BMW M340\r\n2025+ BMW M440\r\n2025+ BMW X3 G45 M50\r\n2025+ BMW X4 G46 M50\r\n \r\nEmissions Disclaimer:This product is not legal for sale or use on pollution-controlled vehicles operated on public roads, highways, or streets. It is intended for off-road, race, or closed-course competition use only, where such modifications are permitted.\r\nBy purchasing this product, you acknowledge and agree that:\r\n\r\n\r\nYou are responsible for compliance with all applicable emissions laws and regulations.\r\n\r\n\r\nMAD and its affiliates disclaim any liability for improper or unlawful use of this product.\r\n\r\n\r\nUse of this part on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws.\r\n\r\n\r\nPlease check your local laws before purchase and installation.","brand":"MAD","offers":[{"title":"Default Title","offer_id":45444957864134,"sku":"MAD-126","price":259.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0081\/0804\/8420\/files\/WhatsApp_Image_2025-05-16_at_11.04.02_c680f6c2__42110.1749140002.386.513.jpg?v=1768321375","url":"https:\/\/www.graveyardperformance.com\/products\/mad-bmw-b58-2025-gen-3-m340-m440-4-5-downpipe-catless","provider":"Graveyard Performance","version":"1.0","type":"link"}