{"product_id":"racing-lab-b58-4-5-inch-heat-shielded-catless-downpipe","title":"B58 4.5-Inch Heat-Shielded Catless Downpipe","description":"\u003cp data-start=\"55\" data-end=\"394\" class=\"PDq2pG_selectionAnchorContainer\"\u003eDeveloped for compatible B58 applications, this catless downpipe replaces the restrictive factory primary catalytic converter with a straight-through exhaust path. The freer-flowing design reduces post-turbine backpressure, supporting quicker turbo response, increased performance potential, and a louder, more aggressive B58 exhaust note.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"396\" data-end=\"644\"\u003eThe downpipe is manufactured from 304 stainless steel and enclosed by a thermal insulation layer that helps reduce radiant heat transfer to nearby engine-bay components. Factory-style oxygen-sensor ports support installation on compatible vehicles.\u003c\/p\u003e\n\u003ch3 data-section-id=\"t6ohfx\" data-start=\"646\" data-end=\"673\"\u003eCommon B58 Applications\u003c\/h3\u003e\n\u003cul data-start=\"675\" data-end=\"1109\"\u003e\n\u003cli data-section-id=\"pk7s5q\" data-start=\"675\" data-end=\"717\"\u003eToyota GR Supra A90\/A91 3.0 B58 - 2019+.\u003c\/li\u003e\n\u003cli data-section-id=\"w0hf0w\" data-start=\"718\" data-end=\"776\"\u003eBMW M240i \/ M240i xDrive - F22, F23, and G42 B58 models.\u003c\/li\u003e\n\u003cli data-section-id=\"v5sdfb\" data-start=\"777\" data-end=\"848\"\u003eBMW 340i \/ M340i and xDrive - F30, F31, F34, G20, and G21 B58 models.\u003c\/li\u003e\n\u003cli data-section-id=\"1fs1ziy\" data-start=\"849\" data-end=\"925\"\u003eBMW 440i \/ M440i and xDrive - F32, F33, F36, G22, G23, and G26 B58 models.\u003c\/li\u003e\n\u003cli data-section-id=\"q0b0hd\" data-start=\"926\" data-end=\"976\"\u003eBMW 540i \/ 540i xDrive - G30 and G31 B58 models.\u003c\/li\u003e\n\u003cli data-section-id=\"znooxf\" data-start=\"977\" data-end=\"1027\"\u003eBMW 740i \/ 740i xDrive - G11 and G12 B58 models.\u003c\/li\u003e\n\u003cli data-section-id=\"1qe1pc0\" data-start=\"1028\" data-end=\"1077\"\u003eBMW X3 M40i \/ X4 M40i - G01 and G02 B58 models.\u003c\/li\u003e\n\u003cli data-section-id=\"1whjz1e\" data-start=\"1078\" data-end=\"1109\"\u003eBMW Z4 M40i - G29 B58 models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"19zqy0x\" data-start=\"1111\" data-end=\"1123\"\u003eFeatures\u003c\/h3\u003e\n\u003cul data-start=\"1125\" data-end=\"1427\"\u003e\n\u003cli data-section-id=\"lz80e3\" data-start=\"1125\" data-end=\"1159\"\u003eStraight-through catless design.\u003c\/li\u003e\n\u003cli data-section-id=\"17d9u6u\" data-start=\"1160\" data-end=\"1224\"\u003eIntegrated thermal insulation layer helps reduce radiant heat.\u003c\/li\u003e\n\u003cli data-section-id=\"11pierm\" data-start=\"1225\" data-end=\"1260\"\u003e304 stainless-steel construction.\u003c\/li\u003e\n\u003cli data-section-id=\"4bdbnf\" data-start=\"1261\" data-end=\"1297\"\u003eFactory-style oxygen-sensor ports.\u003c\/li\u003e\n\u003cli data-section-id=\"1vxy6ib\" data-start=\"1298\" data-end=\"1358\"\u003eReduced exhaust restriction and post-turbine backpressure.\u003c\/li\u003e\n\u003cli data-section-id=\"g1mfs9\" data-start=\"1359\" data-end=\"1384\"\u003eQuicker turbo response.\u003c\/li\u003e\n\u003cli data-section-id=\"1lvjhva\" data-start=\"1385\" data-end=\"1427\"\u003eMore pronounced turbo and exhaust sound.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1x5ej4z\" data-start=\"1429\" data-end=\"1448\"\u003eImportant Notes\u003c\/h3\u003e\n\u003cp data-start=\"1450\" data-end=\"1501\"\u003e\u003cstrong data-start=\"1450\" data-end=\"1501\"\u003eFOR CLOSED-COURSE COMPETITION \/ TRACK USE ONLY.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1503\" data-end=\"1644\"\u003eThis product removes the primary catalytic converter and is not intended for public-road use where emissions equipment removal is prohibited.\u003c\/p\u003e\n\u003cp data-start=\"1646\" data-end=\"1759\"\u003eA catalyst-efficiency warning light is likely without compatible ECU calibration; suitable tuning is recommended.\u003c\/p\u003e\n\u003cp data-start=\"1761\" data-end=\"1865\"\u003eFitment can vary by B58 generation, production year, emissions specification, and GPF\/OPF configuration.\u003c\/p\u003e\n\u003cp data-start=\"1867\" data-end=\"1968\"\u003eConfirm the VIN, turbo outlet, mounting bracket, and original downpipe configuration before ordering.\u003c\/p\u003e\n\u003cp data-start=\"1970\" data-end=\"2011\"\u003eProfessional installation is recommended.\u003c\/p\u003e","brand":"Racing Lab","offers":[{"title":"Default Title","offer_id":67489626292528,"sku":null,"price":719.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5967\/9024\/files\/12_019f6688-38c5-4fe4-b619-f3c0bbfddf59.png?v=1789605826","url":"https:\/\/ismotorracingshop.com\/products\/racing-lab-b58-4-5-inch-heat-shielded-catless-downpipe","provider":"IS Motor Racing","version":"1.0","type":"link"}