{"product_id":"bmw-b58-spool-4-5-stainless-race-downpipe","title":"BMW B58 Spool 4.5\" Stainless Race Downpipe","description":"\u003cp\u003eThe Spool 4.5 inch race downpipe for the BMW B58 cuts backpressure on the turbo and is built with fewer welds where downpipes usually crack.\u003c\/p\u003e\u003ch2\u003eWhy you need it\u003c\/h2\u003e\u003cp\u003eA downpipe is one of the best value mods on a turbo BMW. Lower backpressure lets the turbo build boost more efficiently and puts less stress on it, and with a tune the power gains are big. Spool avoids a weld right before the turbo flange, a high-stress area where many downpipes fail, and uses a highly flexible flex section so lining it up with your exhaust is much easier at home.\u003c\/p\u003e\u003ch2\u003eFits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAll Gen 1 and Gen 2 B58 engines (2 port and 6 port)\u003c\/li\u003e\n\u003cli\u003e2016+ BMW M240i \u0026amp; M240i xDrive (F22\/F23)\u003c\/li\u003e\n\u003cli\u003e2016+ BMW 340i \u0026amp; 340i xDrive (F30\/F31)\u003c\/li\u003e\n\u003cli\u003e2016+ BMW 440i \u0026amp; 440i xDrive (F32\/F33\/F36)\u003c\/li\u003e\n\u003cli\u003e2016+ BMW 540i \u0026amp; 540i xDrive (G30)\u003c\/li\u003e\n\u003cli\u003e2016+ BMW 740i \u0026amp; 740i xDrive (G11\/G12)\u003c\/li\u003e\n\u003cli\u003e2017+ BMW X3 M40i (G01)\u003c\/li\u003e\n\u003cli\u003e2018+ BMW X4 M40i (G02)\u003c\/li\u003e\n\u003cli\u003e2019 to 2023 BMW M340i \u0026amp; M440i incl. xDrive (G20\/G22\/G26)\u003c\/li\u003e\n\u003cli\u003e2021 to 2023 BMW M240i \u0026amp; M240i xDrive (G42)\u003c\/li\u003e\n\u003cli\u003e2019 to 2023 BMW X5 xDrive40i (G05)\u003c\/li\u003e\n\u003cli\u003e2019 to 2023 BMW X6 xDrive40i (G06)\u003c\/li\u003e\n\u003cli\u003e2019 to 2023 BMW X7 xDrive40i (G07)\u003c\/li\u003e\n\u003cli\u003e2019 to 2023 BMW Z4 M40i (G29)\u003c\/li\u003e\n\u003cli\u003e2019 to 2023 BMW 840i \u0026amp; 840i xDrive (G14\/G15\/G16)\u003c\/li\u003e\n\u003cli\u003e2022+ BMW 740i \u0026amp; xDrive (G70)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e4.5 inch 304 stainless steel construction\u003c\/li\u003e\n\u003cli\u003eSmooth transitions for maximum flow\u003c\/li\u003e\n\u003cli\u003eNo weld right before the turbo flange\u003c\/li\u003e\n\u003cli\u003eHighly flexible flex section for easier alignment\u003c\/li\u003e\n\u003cli\u003eMore aggressive exhaust note\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGood to know\u003c\/h2\u003e\u003cp\u003ePower gains depend on a supporting tune. This part modifies or replaces emissions equipment. Intended for off-road and competition use only. Not legal for use on public roads in many areas.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"Default Title","offer_id":46564523016277,"sku":"SP-B58-DP","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/9769\/8389\/files\/4.5_dp.png?v=1793250863","url":"https:\/\/www.wrenchhaususa.com\/products\/bmw-b58-spool-4-5-stainless-race-downpipe","provider":"Wrench Haus","version":"1.0","type":"link"}