{"title":"Downpipes","description":"\u003cp\u003eStainless downpipes for the B58, S55 and S58. Catless downpipes are sold for off-road and competition use only.\u003c\/p\u003e","products":[{"product_id":"s55-3-inch-catless-downpipes","title":"IBOAUTO S55 3\" Catless Downpipes (F80 \/ F82 \/ F87)","description":"\u003cp\u003e3\" catless downpipes for the S55 in the F80 M3, F82\/F83 M4 and F87 M2 Competition. After the turbos, the factory downpipes and their catalytic converters are the biggest restriction in the exhaust. These replace them with mandrel-bent, TIG-welded 304 stainless and a cast V-band flange at each turbo, so the turbos spool sooner and the car sounds deeper and louder once it's tuned.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3\" mandrel-bent 304 stainless\u003c\/li\u003e\n\u003cli\u003eTIG welded, cast V-band turbo flanges\u003c\/li\u003e\n\u003cli\u003eStraight-through, no catalytic converters\u003c\/li\u003e\n\u003cli\u003eReuses the factory O2 sensors\u003c\/li\u003e\n\u003cli\u003eBolt-on, no cutting or welding\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IBOAUTO","offers":[{"title":"F80 \/ F82 \/ F87","offer_id":67890633408818,"sku":"200257284:-1#OEM","price":549.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/2064\/2354\/files\/Aad402aeed162455fb64f59e4322cf2f2t.webp?v=1790776051"},{"product_id":"b58-catless-downpipe","title":"IBOAUTO B58 Gen 1 4.5\" Catless Downpipe","description":"\u003cp\u003eA 4.5\" catless downpipe for the Gen 1 B58 in the 340i, 440i, M240i and 540i. It swaps the restrictive factory downpipe and catalytic converter for a straight-through 304 stainless pipe, so the turbo spools sooner and the car makes more power once it's tuned. A braided flex section soaks up engine movement, and the mounting bracket comes in the box.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e4.5\" 304 stainless, 1.5 mm wall\u003c\/li\u003e\n\u003cli\u003eStraight-through, no catalytic converter\u003c\/li\u003e\n\u003cli\u003eBraided flex section\u003c\/li\u003e\n\u003cli\u003eBolt-on, no cutting or welding\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IBOAUTO","offers":[{"title":"Brushed stainless \/ B58 Gen 1","offer_id":67893535637810,"sku":"100007928:-6#silver;191284006:-7#L36cmW6cmH6cm","price":349.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/2064\/2354\/files\/H78db74c6d85845808148cfb62e12501aT_e82dd868-6a43-492e-90de-8f91407763b1.webp?v=1790818550"},{"product_id":"s58-catless-downpipes-g8x","title":"IBOAUTO S58 Catless Downpipes (G80 \/ G82 \/ G87)","description":"\u003cp\u003eDirect-fit catless downpipes for the S58 in the G80 M3, G82\/G83 M4 and G87 M2. Each pipe is straight-through 304 stainless with its own flex section to absorb engine movement, and they bolt to the factory turbos and mid-pipe. Expect quicker spool and a much louder, sharper exhaust once the car is tuned. Sold as a pair.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e304 stainless, 1.5 mm wall, smooth finish\u003c\/li\u003e\n\u003cli\u003eStraight-through, no catalytic converters\u003c\/li\u003e\n\u003cli\u003eFlex section in each pipe\u003c\/li\u003e\n\u003cli\u003eBolt-on, mounting hardware included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IBOAUTO","offers":[{"title":"Brushed stainless \/ G80 \/ G82 \/ G87","offer_id":67893541568818,"sku":"100007928:-2#silvery white;191284006:-1#standard","price":749.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/2064\/2354\/files\/H94ecb2c7dda4448db8413871e2b6d0ffN.webp?v=1790819461"},{"product_id":"s58-catless-downpipes-x3m-x4m","title":"IBOAUTO S58 Catless Downpipes (X3 M F97 \/ X4 M F98)","description":"\u003cp\u003eCatless downpipes for the S58 X3 M and X4 M. They step from 3.5\" at the turbos down to 3\" and run straight through with no catalytic converters, for faster spool and a louder, sharper exhaust once the car is tuned. TIG-welded 304 stainless with flex sections. Sold as a pair.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3.5\" to 3\", 304 stainless, 1.5 mm wall\u003c\/li\u003e\n\u003cli\u003eTIG welded, with flex sections\u003c\/li\u003e\n\u003cli\u003eStraight-through, no catalytic converters\u003c\/li\u003e\n\u003cli\u003eBolt-on, no cutting or welding\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IBOAUTO","offers":[{"title":"X3 M F97 \/ X4 M F98","offer_id":67893541863730,"sku":"191284006:-1#80*40*30cm","price":849.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/2064\/2354\/files\/H630ee5b1a93c45b5be083a43907c9c0cU.webp?v=1790819462"},{"product_id":"supra-a90-catless-downpipe","title":"IBOAUTO B58 4.5\" Catless Downpipe (Supra A90)","description":"\u003cp\u003eA 4.5\" catless downpipe built for the 3.0 Supra. It swaps the factory downpipe and catalytic converter for straight-through 304 stainless with a brushed finish, for quicker spool, more power once tuned and a much stronger exhaust note.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e4.5\" 304 stainless\u003c\/li\u003e\n\u003cli\u003eBrushed finish\u003c\/li\u003e\n\u003cli\u003eStraight-through, no catalytic converter\u003c\/li\u003e\n\u003cli\u003eBolt-on, no cutting or welding\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IBOAUTO","offers":[{"title":"Default Title","offer_id":67895514267954,"sku":"\u003cnone\u003e","price":399.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/2064\/2354\/files\/H630480fb654249958828e655c04b5179F.webp?v=1790868178"},{"product_id":"b58-opf-catless-downpipe","title":"IBOAUTO B58 Catless Downpipe for OPF \/ GPF Cars (2021+)","description":"\u003cp\u003eA catless downpipe for 2021+ B58 cars that left the factory with an OPF\/GPF (gasoline particulate filter), which is mostly European-spec cars. It replaces the factory downpipe and filter with a straight-through 304 stainless pipe, freeing up flow and sharpening the exhaust note once the car is tuned. Most North American-spec cars don't have an OPF; if you're not sure about yours, send us your VIN.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e304 stainless, 1.5 mm wall\u003c\/li\u003e\n\u003cli\u003eReplaces the factory downpipe and OPF\/GPF\u003c\/li\u003e\n\u003cli\u003eSmooth finish\u003c\/li\u003e\n\u003cli\u003eBolt-on, no cutting or welding\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IBOAUTO","offers":[{"title":"Stainless \/ B58 with OPF\/GPF","offer_id":67895514759474,"sku":"191284006:-7#72*23*18cm;100007928:-6#silver","price":429.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/2064\/2354\/files\/iboauto-b58-opf-catless-dp-a.jpg?v=1790954892"},{"product_id":"b58-gen-2-catless-downpipe","title":"IBOAUTO B58 Gen 2 Catless Downpipe (G20 M340i \/ Z4 G29)","description":"\u003cp\u003eA 4.5\" catless downpipe for the Gen 2 B58 in the G20 M340i and G29 Z4 M40i. It replaces the factory downpipe and its catalytic converter with a straight-through 304 stainless pipe, so the turbo spools sooner and the car makes more power once it's tuned. A heat shield wraps the pipe to keep exhaust heat away from nearby parts.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e4.5\" 304 stainless, 1.5 mm wall\u003c\/li\u003e\n\u003cli\u003eStraight-through, no catalytic converter\u003c\/li\u003e\n\u003cli\u003eHeat shield included\u003c\/li\u003e\n\u003cli\u003eBolt-on, no cutting or welding\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IBOAUTO","offers":[{"title":"Heat-shielded \/ G20 M340i \/ Z4 G29","offer_id":67895514792242,"sku":"100007928:-1#silver;191284006:-1#72*23*18cm","price":379.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/2064\/2354\/files\/iboauto-b58-gen2-catless-downpipe-2.jpg?v=1790949294"},{"product_id":"b58-gen-1-5-inch-catless-downpipe","title":"IBOAUTO B58 Gen 1 5\" Catless Downpipe","description":"\u003cp\u003eA big-bore 5\" catless downpipe for the Gen 1 B58. Most aftermarket B58 downpipes stop at 4 or 4.5\"; going to 5\" gives the exhaust more room to expand and flow as it leaves the turbo, which means less back pressure, quicker spool and more headroom for heavily tuned, E85 and upgraded-turbo cars. Straight-through 304 stainless with no catalytic converter, and a deeper, fuller tone than a smaller pipe.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e5\" diameter for maximum flow off the turbo\u003c\/li\u003e\n\u003cli\u003e304 stainless, 1.5 mm wall, smooth finish\u003c\/li\u003e\n\u003cli\u003eStraight-through, no catalytic converter\u003c\/li\u003e\n\u003cli\u003eBolt-on, no cutting or welding\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IBOAUTO","offers":[{"title":"Smooth stainless \/ 5 in","offer_id":67896006148402,"sku":"100007928:-6#silver;191284006:-1#5inch","price":429.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/2064\/2354\/files\/iboauto-b58-gen1-5in-catless-dp-a.jpg?v=1790954103"},{"product_id":"b58-gen-3-5-inch-catless-downpipe","title":"IBOAUTO B58 Gen 3 5\" Catless Downpipe (B58TU2)","description":"\u003cp\u003eA 5\" catless downpipe for the newest Gen 3 B58 (B58TU2), found in the facelifted M340i and M440i, the G60 540i, G70 740i and other late-model BMWs. Parts for this engine are still hard to find. Going to 5\" gives the exhaust more room to flow off the turbo, for less back pressure, quicker spool and more headroom once the car is tuned. TIG-welded 304 stainless, straight through with no catalytic converter.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e5\" (127 mm) diameter for maximum flow\u003c\/li\u003e\n\u003cli\u003e304 stainless, 1.5 mm wall, TIG welded\u003c\/li\u003e\n\u003cli\u003eStraight-through, no catalytic converter\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on for the Gen 3 B58\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IBOAUTO","offers":[{"title":"Stainless \/ B58 Gen 3 (B58TU2)","offer_id":67896006181170,"sku":"100007928:-1#as picture;191284006:-1#standard","price":649.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/2064\/2354\/files\/FullSizeRender.jpg?v=1790965008"},{"product_id":"b58-gen-1-5-inch-catted-downpipe","title":"IBOAUTO B58 Gen 1 5\" High-Flow Catted Downpipe","description":"\u003cp\u003eA big-bore 5\" downpipe for the Gen 1 B58 that keeps a 200-cell high-flow catalytic converter. You get the quicker spool and power of an aftermarket downpipe with a cat still in the exhaust. Going to 5\" gives the exhaust more room to flow off the turbo, for less back pressure and more headroom on tuned cars, and a heat shield keeps the extra heat away from nearby parts.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e5\" diameter for maximum flow off the turbo\u003c\/li\u003e\n\u003cli\u003e200-cell high-flow catalytic converter\u003c\/li\u003e\n\u003cli\u003eT304 stainless with heat shield\u003c\/li\u003e\n\u003cli\u003eBolt-on, no cutting or welding\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IBOAUTO","offers":[{"title":"B58 Gen 1","offer_id":67896019878194,"sku":"200257284:-1#66*24*15","price":729.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/2064\/2354\/files\/H4216e7197c604a50acf07030d6275c181.webp?v=1790880700"},{"product_id":"s58-high-flow-catted-downpipes-g8x","title":"IBOAUTO S58 High-Flow Catted Downpipes (G80 \/ G82 \/ G87)","description":"\u003cp\u003eHigh-flow catted downpipes for the S58 in the G80 M3, G82\/G83 M4 and G87 M2. Each pipe keeps a high-flow catalytic converter, so you get the quicker spool and stronger pull of an aftermarket downpipe with cats still in the exhaust. 304 stainless with a heat shield on each pipe to keep the extra heat away from nearby parts. Sold as a pair.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh-flow catalytic converter in each pipe\u003c\/li\u003e\n\u003cli\u003e304 stainless, 1.5 mm wall\u003c\/li\u003e\n\u003cli\u003eHeat shield on each pipe\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on replacement for the factory downpipes\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IBOAUTO","offers":[{"title":"Heat-shielded \/ High-flow catted","offer_id":67896244535602,"sku":"100007928:-1#silver;191284006:-1#catted","price":1049.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/2064\/2354\/files\/iboauto-s58-high-flow-catted-downpipes-1.jpg?v=1790949448"}],"url":"https:\/\/iboautomotive.com\/collections\/downpipes\/high-flow.oembed","provider":"IBOAUTOMOTIVE","version":"1.0","type":"link"}