{"product_id":"mad-b58-gen3-4-5inch-catless-downpipe","title":"MAD B58 Gen 3 4.5\" Catless Downpipe (2025+ M340\/M440)","description":"Designed for the 2025+ B58 Gen‑3 engines, this 4.5-inch catless downpipe uses premium 304 stainless steel to eliminate the restrictive factory catalyst. It significantly improves exhaust flow, throttle response and turbo spool while adding an aggressive exhaust note. It fits 2025+ BMW M340 and M440, and upcoming X3 G45 M50 and X4 G46 M50 models","brand":"MAD","offers":[{"title":"Default","offer_id":45809462935749,"sku":"MAD-126","price":259.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0765\/9841\/1461\/files\/WhatsApp_Image_2025-05-16_at_11.04.02_c680f6c2__42110.1749140002.386.513.jpg?v=1770945303","url":"https:\/\/bmdperformance.com\/products\/mad-b58-gen3-4-5inch-catless-downpipe","provider":"My Store","version":"1.0","type":"link"}