{"product_id":"bmw-g-series-b58-opf-gpf-sports-cat-downpipe-with-flex","title":"BMW G-Series B58 OPF \/ GPF Sports Cat Downpipe (with Flex)","description":"\u003cp data-start=\"63\" data-end=\"421\"\u003eBuilt for \u003cstrong data-start=\"73\" data-end=\"113\"\u003eBMW G-Series 3.0T B58 OPF\/GPF models\u003c\/strong\u003e, this \u003cstrong data-start=\"120\" data-end=\"156\"\u003ePromod Works sports cat downpipe\u003c\/strong\u003e is designed to reduce exhaust backpressure and improve flow where the factory system becomes restrictive. The result is \u003cstrong data-start=\"277\" data-end=\"303\"\u003esharper turbo response\u003c\/strong\u003e, stronger mid-range pull, and a more purposeful exhaust note — while still retaining a \u003cstrong data-start=\"391\" data-end=\"420\"\u003ehigh-flow sports catalyst\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 data-start=\"423\" data-end=\"445\"\u003eWhy you’ll want it\u003c\/h3\u003e\n\u003cp data-start=\"448\" data-end=\"528\"\u003eImproves \u003cstrong data-start=\"457\" data-end=\"473\"\u003eexhaust flow\u003c\/strong\u003e vs OEM for better response and performance potential\u003c\/p\u003e\n\u003cp data-start=\"531\" data-end=\"593\"\u003eHelps reduce restriction on \u003cstrong data-start=\"559\" data-end=\"584\"\u003etuned \/ Stage 2-style\u003c\/strong\u003e setups\u003c\/p\u003e\n\u003cp data-start=\"596\" data-end=\"665\"\u003e\u003cstrong data-start=\"596\" data-end=\"610\"\u003eSports cat\u003c\/strong\u003e design (cleaner than a decat option, less raw smell)\u003c\/p\u003e\n\u003cp data-start=\"668\" data-end=\"730\"\u003eAdds a deeper, more aggressive tone without going full chaos\u003c\/p\u003e\n\u003ch3 data-start=\"732\" data-end=\"748\"\u003eKey features\u003c\/h3\u003e\n\u003cp data-start=\"751\" data-end=\"811\"\u003e\u003cstrong data-start=\"751\" data-end=\"780\"\u003eHigh-flow sports catalyst\u003c\/strong\u003e integrated into the downpipe\u003c\/p\u003e\n\u003cp data-start=\"814\" data-end=\"879\"\u003e\u003cstrong data-start=\"814\" data-end=\"830\"\u003eFlex section\u003c\/strong\u003e to reduce stress and movement-related cracking\u003c\/p\u003e\n\u003cp data-start=\"882\" data-end=\"961\"\u003ePrecision welded construction with a clean, OEM+ fit and finish (as pictured)\u003c\/p\u003e\n\u003cp data-start=\"964\" data-end=\"1036\"\u003eSensor ports \/ mounting points positioned for \u003cstrong data-start=\"1010\" data-end=\"1034\"\u003eOPF\/GPF applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1039\" data-end=\"1107\"\u003eDirect-fit style replacement for compatible B58 G-Series platforms\u003c\/p\u003e\n\u003ch3 data-start=\"1109\" data-end=\"1161\"\u003eVehicle fitment (B58 3.0T + OPF\/GPF models only)\u003c\/h3\u003e\n\u003cp data-start=\"1162\" data-end=\"1446\"\u003e\u003cstrong data-start=\"1162\" data-end=\"1181\"\u003eBMW (G-Series):\u003c\/strong\u003e G20\/G21 M340i · G22\/G23 M440i · G30\/G31 540i · G32 640i GT · G01 X3 M40i · G02 X4 M40i · G05 X5 xDrive40i · G06 X6 xDrive40i · G07 X7 xDrive40i · G14\/G15\/G16 840i · G29 Z4 M40i · G42 M240i \u003cem data-start=\"1371\" data-end=\"1444\"\u003e(where fitted with B58 + OPF\/GPF — typically EU\/UK spec, approx. 2019+)\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"1448\" data-end=\"1481\"\u003eImportant notes (please read)\u003c\/h3\u003e\n\u003cp data-start=\"1484\" data-end=\"1653\"\u003e\u003cstrong data-start=\"1484\" data-end=\"1501\"\u003eOPF\/GPF only:\u003c\/strong\u003e This is intended for cars fitted with an \u003cstrong data-start=\"1543\" data-end=\"1573\"\u003eOPF\/GPF-equipped B58 setup\u003c\/strong\u003e. If you’re unsure, message us with your \u003cstrong data-start=\"1614\" data-end=\"1627\"\u003eVIN \/ reg\u003c\/strong\u003e and we’ll help confirm.\u003c\/p\u003e\n\u003cp data-start=\"1656\" data-end=\"1769\"\u003eMay require \u003cstrong data-start=\"1668\" data-end=\"1687\"\u003eECU calibration\u003c\/strong\u003e depending on your setup and local spec (warning lights can occur on some cars).\u003c\/p\u003e\n\u003cp data-start=\"1772\" data-end=\"1954\"\u003e\u003cstrong data-start=\"1772\" data-end=\"1800\"\u003eRoad legality\/emissions:\u003c\/strong\u003e Motorsport\/performance part — emissions and road legality vary by country and testing standard. Always check your local regulations and MOT requirements.\u003c\/p\u003e","brand":"Promod Shop","offers":[{"title":"Default Title","offer_id":57148096577881,"sku":null,"price":500.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/5749\/2057\/files\/ProModWorksParts-037.jpg?v=1769376632","url":"https:\/\/promodparts.com\/products\/bmw-g-series-b58-opf-gpf-sports-cat-downpipe-with-flex","provider":"Promod Shop","version":"1.0","type":"link"}