{"product_id":"mad-b58-catted-downpipe","title":"MAD B58 4.5\" Catted Downpipe w\/ Bracket","description":"This 4.5-inch catted downpipe for the BMW B58 engine uses premium 304 stainless steel and a high‑flow catalytic converter to improve exhaust flow while maintaining emissions control. It delivers noticeable horsepower and torque gains, retains OEM fitment with smooth bends and a flex section, and installs as a direct bolt-on. Compatible with left‑hand and right‑hand drive vehicles, it fits BMW M240i, 340i, 440i, 540i, 740i, X3\/X4 M40, X5 40i, X7 40i, Z4 M40i and Toyota Supra","brand":"MAD","offers":[{"title":"Default","offer_id":45809462509765,"sku":"MAD-056","price":369.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0765\/9841\/1461\/files\/PhotoRoom_000_20240111_114207__80787.1705008486.386.513.jpg?v=1770945273","url":"https:\/\/bmdperformance.com\/products\/mad-b58-catted-downpipe","provider":"My Store","version":"1.0","type":"link"}