{"product_id":"arm-motorsports®-bmw-m240i-340i-440i-b58b30-turbo-back-exhaust-system","title":"ARM Motorsports® BMW M240i\/340i\/440i B58B30 Turbo-Back Exhaust System","description":"\u003ch1\u003eCOMPATIBLE: (3.0L - B58B30)\u003c\/h1\u003e\n\u003ch1\u003e2016 - 2021 BMW M240i \u003c\/h1\u003e\n\u003ch1\u003e\n\u003cmeta charset=\"utf-8\"\u003e2016 - 2021 BMW M240i xDrive\u003c\/h1\u003e\n\u003ch1\u003e2015 - 2019 BMW 340i \u003c\/h1\u003e\n\u003ch1\u003e\n\u003cmeta charset=\"utf-8\"\u003e2015 - 2019 BMW 340i xDrive\u003c\/h1\u003e\n\u003ch1\u003e\n\u003cmeta charset=\"utf-8\"\u003e2015 - 2019 BMW M340i \u003c\/h1\u003e\n\u003ch1\u003e\n\u003cmeta charset=\"utf-8\"\u003e2015 - 2019 BMW M340i xDrive\u003c\/h1\u003e\n\u003ch1\u003e2016 - 2019 BMW 440i \u003c\/h1\u003e\n\u003ch1\u003e\n\u003cmeta charset=\"utf-8\"\u003e2016 - 2019 BMW 440i xDrive\u003c\/h1\u003e\n\u003ch1\u003e2016 - 2019 BMW M440i \u003c\/h1\u003e\n\u003ch1\u003e\n\u003cmeta charset=\"utf-8\"\u003e2016 - 2019 BMW M440i xDrive\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch1\u003eB58 DOWNPIPES\u003c\/h1\u003e\n\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eThe ARM B58 Downpipe is one of the foundational upgrades for giving your B58-powered BMW more power, torque, and sound.  We offer \u003cstrong\u003eTHREE\u003c\/strong\u003e different versions of the B58 downpipe. Those versions include, 4.5in Downpipe, 6in Downpipe, and 6in Catted Downpipe. The stock B58 downpipe comes from the factory with a catalyst that severely restricts exhaust flow, causing excessive backpressure with increased boost.  Upgrading your downpipe unlocks power, improves turbo spool, allows you to safely run stage 2+ tuning, all while increasing the sound of your B58-powered BMW. \u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0082\/6687\/4995\/files\/4.5inDownpipe_600x600.png?v=1707935484\"\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003ch2\u003e\u003c\/h2\u003e\n\u003ch1\u003eB58 MIDPIPE UPGRADE\u003c\/h1\u003e\n\u003ch2\u003e\u003cspan\u003eThe ARM M240i\/340i\/440i Midpipe significantly improves the sound of your B58, giving it the aggressive exhaust note you're looking for from a tuned B58-powered BMW. Designed to amplify the power and sound of your B58, the ARM M240i\/340i\/440i Midpipe \u003cstrong\u003eeliminates the two central resonators\u003c\/strong\u003e found in the stock M240i\/340i\/440i midpipe.  By retaining the OEM muffler you still have the ability to \u003cstrong\u003econtrol the volume of your exhaust\u003c\/strong\u003e.  Switch your car into Sport Plus and enjoy the sounds of the upgraded B58 sing, or flip it into comfort mode to drive through the neighborhood.  You can select the \u003cstrong\u003eARM Single Exit Exhaust option\u003c\/strong\u003e \u003cstrong\u003eto turn your ARM M240i\/340i\/440i Midpipe into a full 3.25\" straight-piped system\u003c\/strong\u003e, for maximum volume and weight savings.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0082\/6687\/4995\/files\/BMW-M240I-MIDPIPE-6_8333c662-c845-4ede-bf4e-04577df647d1_600x600.jpg?v=1707935571\"\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch1\u003eB58 SINGLE EXIT EXHAUST\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eThe ARM M240i\/340i\/440i Single Exit Exhaust is the final step in your M240i\/340i\/440i exhaust modifications. This is for the all-in M240i\/340i\/440i enthusiast, seeking the lightest and loudest exhaust available.  You will see significant weight savings and an engine note that SCREAMS. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch2\u003e\u003cspan\u003eThe ARM M240i\/340i\/440i Single Exit Exhaust connects to the end of the ARM M240i\/340i\/440i Midpipe, extending the 3.25\" midpipe all the way to a passenger-side single exit tip.\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\n\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0082\/6687\/4995\/files\/bmw-m240i-track-exhaust-muffler-delete_4_f68b1728-3cfb-43bb-a9f6-50874b135f10_600x600.jpg?v=1707935696\"\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003ch2\u003eIN THE BOX\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\u003cspan\u003e• 1x ARM B58 Single Exit Exhaust\u003cbr\u003e• 1x Exhaust Clamp\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch2\u003e\u003cspan\u003e• ARM B58 Downpipe\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch2\u003e\u003cspan\u003e• 1x ARM B58 Midpipe Front Section\u003cbr\u003e• 1x ARM B58 Midpipe Rear Section\u003cbr\u003e• 4x Exhaust Clamps\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch2\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003ch1\u003e\u003cstrong\u003eWARRANTY:\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/10secondracing.com\/pages\/arm-motorsports%C2%AE-product-warranty\"\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/ARMLOGO.png?v=1742155358\"\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"ARM Motorsports®","offers":[{"title":"M240i \/ Catless \/ Single Exit","offer_id":41581168099422,"sku":"","price":758.43,"currency_code":"GBP","in_stock":true},{"title":"M240i \/ Catless \/ Dual Exit","offer_id":41581168132190,"sku":"","price":887.75,"currency_code":"GBP","in_stock":true},{"title":"M240i \/ Catted \/ Single Exit","offer_id":41581168164958,"sku":"","price":1001.86,"currency_code":"GBP","in_stock":true},{"title":"M240i \/ Catted \/ Dual Exit","offer_id":41581168197726,"sku":"","price":1131.18,"currency_code":"GBP","in_stock":true},{"title":"340i \/ Catless \/ Single Exit","offer_id":41581168230494,"sku":"","price":758.43,"currency_code":"GBP","in_stock":true},{"title":"340i \/ Catless \/ Dual Exit","offer_id":41581168263262,"sku":"","price":887.75,"currency_code":"GBP","in_stock":true},{"title":"340i \/ Catted \/ Single Exit","offer_id":41581168296030,"sku":"","price":1001.86,"currency_code":"GBP","in_stock":true},{"title":"340i \/ Catted \/ Dual Exit","offer_id":41581168328798,"sku":"","price":1131.18,"currency_code":"GBP","in_stock":true},{"title":"440i \/ Catless \/ Single Exit","offer_id":41581168361566,"sku":"","price":758.43,"currency_code":"GBP","in_stock":true},{"title":"440i \/ Catless \/ Dual Exit","offer_id":41581168394334,"sku":"","price":887.75,"currency_code":"GBP","in_stock":true},{"title":"440i \/ Catted \/ Single Exit","offer_id":41581168427102,"sku":"","price":1001.86,"currency_code":"GBP","in_stock":true},{"title":"440i \/ Catted \/ Dual Exit","offer_id":41581168459870,"sku":"","price":1131.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/Screenshot2025-03-24at4.59.55PM.png?v=1742850038","url":"https:\/\/10secondracing.com\/en-gb\/products\/arm-motorsports%c2%ae-bmw-m240i-340i-440i-b58b30-turbo-back-exhaust-system","provider":"10 Second Racing","version":"1.0","type":"link"}