{"title":"BMW M4 F83 Downpipes","description":null,"products":[{"product_id":"speed-logic-s55-stainless-steel-downpipes","title":"Speed Logic 3\" Catless Race Downpipes – BMW M2C \/ M3 \/ M4 (S55, F8x)","description":"\u003cstyle\u003e.sl-desc h2{font-size:1.15em;letter-spacing:.06em;text-transform:uppercase;border-bottom:2px solid #111;padding-bottom:6px;margin:1.6em 0 .7em}.sl-desc h3{font-size:1em;margin:1.2em 0 .4em}.sl-desc ul{margin:0 0 1em 1.2em}.sl-desc li{margin:.25em 0}.va-table{width:100%;border-collapse:collapse;margin:.5em 0 1em;font-size:.95em}.va-table th{text-align:left;padding:10px 8px;border-bottom:2px solid #333;white-space:nowrap}.va-table td{padding:8px;border-bottom:1px solid #e5e5e5;vertical-align:top}.sl-note{font-size:.9em;color:#555;margin:.4em 0 1em}\u003c\/style\u003e\u003cdiv class=\"sl-desc\"\u003e\n\u003ch2\u003eOVERVIEW\u003c\/h2\u003e\n\u003cp\u003eOn a turbocharged engine, back pressure in the exhaust suppresses the turbo's ability to spool, and the S55's factory catted downpipes are where most of that restriction lives. Speed Logic's catless race downpipes relieve it, and the resulting airflow is worth an additional 20-25 horsepower and 25-30 lb-ft at the wheels - numbers that have been track proven and tested rather than estimated. Construction is 304 grade stainless, 100% TIG welded with every weld backpurged in argon and left unground because we take pride in them, and installation hardware is included. Every Speed Logic downpipe carries a lifetime warranty against defects.\u003c\/p\u003e\n\u003ch2\u003eSPECS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3\" stainless steel catless race downpipes\u003c\/li\u003e\n\u003cli\u003eFull 304 grade stainless steel construction\u003c\/li\u003e\n\u003cli\u003eAdds 20-25 horsepower and 25-30 lb-ft at the wheels with adequate tuning (track tested)\u003c\/li\u003e\n\u003cli\u003eRemoves the restriction built into the factory exhaust system\u003c\/li\u003e\n\u003cli\u003eDelivers turbo sounds and a deeper exhaust note\u003c\/li\u003e\n\u003cli\u003e100% TIG welded, all welds fully backpurged with 100% argon\u003c\/li\u003e\n\u003cli\u003eWelds are not ground or polished\u003c\/li\u003e\n\u003cli\u003eFits both Left Hand Drive (LHD) and Right Hand Drive (RHD) vehicles without modification\u003c\/li\u003e\n\u003cli\u003eCatless - off-road use only, not available for sale in California or other emissions-testing states\u003c\/li\u003e\n\u003cli\u003eIncludes a Speed Logic LIFETIME warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePARTS INCLUDED\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e(2) Speed Logic downpipes\u003c\/li\u003e\n\u003cli\u003eGasket and downpipe hardware for installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTECH RESOURCES\u003c\/h2\u003e\n\u003ch3\u003eAdditional Parts Required\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA tune is required. These are catless downpipes, and without supporting software the car will log catalyst efficiency faults and throw a check engine light. Speed Logic supplies the \u003ca href=\"\/products\/mhd-super-license-for-s55\"\u003eMHD Super License for F-Series S55 Engine\u003c\/a\u003e, the \u003ca href=\"\/products\/bootmod3-s55-bmw-f80-f82-m3-m4-f87-m2-competition-tune\"\u003ebootmod3 S55 Tune\u003c\/a\u003e and the \u003ca href=\"\/products\/s55-jb4-for-2015-bmw-m3-m4-m2c\"\u003eJB4 Tuner for S55\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNo other hardware is needed - the gasket and downpipe hardware are supplied in the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eNo installation document is published for these downpipes. Our team is available to answer fitment questions, and installation is available at our Southern California facility.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e*NOTE: Speed Logic Downpipes are for OFFROAD USE ONLY and not available for sale in California and other states with emissions testing.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eSpeed Logic does not publish a part number for these downpipes, so no part number is listed. This part is sold for off-road and competition use only.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVEHICLE APPLICATIONS\u003c\/h2\u003e\n\u003ctable class=\"va-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003eF80 Sedan\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2015-2019\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003eF82 Coupe\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2015-2019\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM4 Convertible\u003c\/td\u003e\n\u003ctd\u003eF83\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2015-2019\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM2 Competition\u003c\/td\u003e\n\u003ctd\u003eF87 Coupe\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2018-2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM2 CS\u003c\/td\u003e\n\u003ctd\u003eF87 Coupe\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2018-2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Speed Logic","offers":[{"title":"Default Title","offer_id":37330032984230,"sku":"","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/products\/S55_2.png?v=1634603726"},{"product_id":"active-autowerke-bmw-m3-m4-downpipes-f80-f82-s55","title":"Active Autowerke Downpipes – BMW M3 \/ M4 (F80 \/ F82, S55)","description":"\u003cstyle\u003e.sl-desc h2{font-size:1.15em;letter-spacing:.06em;text-transform:uppercase;border-bottom:2px solid #111;padding-bottom:6px;margin:1.6em 0 .7em}.sl-desc h3{font-size:1em;margin:1.2em 0 .4em}.sl-desc ul{margin:0 0 1em 1.2em}.sl-desc li{margin:.25em 0}.va-table{width:100%;border-collapse:collapse;margin:.5em 0 1em;font-size:.95em}.va-table th{text-align:left;padding:10px 8px;border-bottom:2px solid #333;white-space:nowrap}.va-table td{padding:8px;border-bottom:1px solid #e5e5e5;vertical-align:top}.sl-note{font-size:.9em;color:#555;margin:.4em 0 1em}\u003c\/style\u003e\u003cdiv class=\"sl-desc\"\u003e\n\u003ch2\u003eOVERVIEW\u003c\/h2\u003e\n\u003cp\u003eFor over 30 years Active Autowerke has been the name to turn to for high quality BMW performance products, and these F8X downpipes are a testament to that approach — engineered to virtually eliminate the immensely restrictive characteristics of the factory F80 M3 and F82 M4 downpipes, reducing radiant heat and increasing performance. Early prototypes ran without flex joints and created an annoying vibration inside the cabin, so the finished design adds them. Made from 1.3 to 1.5 mm thick 304 stainless steel and developed for precise fitment on both the F80 M3 and F82 M4, the difference in performance is noticeable the moment you leave your driveway.\u003c\/p\u003e\n\u003ch2\u003eSPECS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e10–15 HP increase, measured when paired with the Active Autowerke F8X mid pipe\u003c\/li\u003e\n\u003cli\u003e1.3–1.5 mm thick 304 stainless steel construction\u003c\/li\u003e\n\u003cli\u003eFlex joints to dampen cabin vibration\u003c\/li\u003e\n\u003cli\u003eLighter weight than the factory downpipes\u003c\/li\u003e\n\u003cli\u003eLess restrictive and more free flowing, for quicker turbo response\u003c\/li\u003e\n\u003cli\u003eImproved low-end and mid-range performance\u003c\/li\u003e\n\u003cli\u003eBrushed stainless finish\u003c\/li\u003e\n\u003cli\u003eOptional White Lightning exhaust coating by Swain Tech Coatings, available at additional charge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePARTS INCLUDED\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003eComplete downpipe set as supplied by Active Autowerke; see the installation instructions for the full bill of materials.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eTECH RESOURCES\u003c\/h2\u003e\n\u003ch3\u003eAdditional Parts Required\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNone.\u003c\/strong\u003e Active Autowerke specifies no additional hardware for this downpipe set.\u003c\/li\u003e\n\u003cli\u003eOptional: \u003ca href=\"\/products\/active-autowerke-mid-pipe-for-bmw-m3-m4-f80-f82\"\u003eActive Autowerke Mid Pipe for BMW M3 \u0026amp; M4 (F80 \/ F82)\u003c\/a\u003e — the quoted 10–15 HP gain is measured with this mid pipe fitted.\u003c\/li\u003e\n\u003cli\u003eInstaller supplies basic hand tools and a lift or jack stands.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eActive Autowerke does not publish a downloadable installation manual for this downpipe set in its instruction library. Speed Logic recommends professional installation.\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/store.activeautowerke.com\/pages\/instructions\"\u003eActive Autowerke installation instruction library\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eNote: For off-road or race use only.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eActive Autowerke's current catalog no longer lists this downpipe set, so the part number above is taken from the Speed Logic catalog record. Confirm fitment and year coverage with Speed Logic before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePART NUMBER\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003e11-038\u003c\/strong\u003e — brushed finish\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eVEHICLE APPLICATIONS\u003c\/h2\u003e\n\u003ctable class=\"va-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003eF80\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2015–2018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003eF82 \/ F83\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2015–2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM2 Competition\u003c\/td\u003e\n\u003ctd\u003eF87\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2019–2021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Active Autowerke","offers":[{"title":"Brushed","offer_id":42108337258662,"sku":"11-038","price":807.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/products\/11-038_1_2000x_ad19c92e-3c22-47cb-ba2a-8e3f98bc91b1.jpg?v=1642640507"}],"url":"https:\/\/speedlogicauto.com\/collections\/bmw-m4-f83-downpipes.oembed","provider":"SPEED LOGIC","version":"1.0","type":"link"}