{"product_id":"mst-performance-2021-g80-m3-g82-m4-competition-s58-catted-downpipe","title":"MST Performance 2021+ G80 M3\/G82 M4 Competition S58 Catted Downpipe","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta content=\"width=device-width, initial-scale=1.0\" name=\"viewport\"\u003e \u003cmeta content=\"MST BMW S58 3.0 Catted Downpipe (BW-S5801DP) – Unlock 15-20 HP \u0026amp; 25 Nm for M2, M3, M4, X3M, X4M. High-flow 200-cell cat, no CEL, 2-year warranty. Off-road only – $2,200 USD. Shop now at MST Performance!\" name=\"description\"\u003e \u003cmeta content=\"index, follow\" name=\"robots\"\u003e\u003c\/p\u003e\n\u003c!-- Open Graph --\u003e\u003c!-- Product Structured Data --\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(17, 17, 17); font-size: 0.875rem;\"\u003eMST BMW S58 3.0 Catted Downpipe (BW-S5801DP) – Ultimate S58 Exhaust Upgrade\u003c\/span\u003e\u003c\/p\u003e\n\u003carticle\u003e\n\u003cp class=\"stock\"\u003e⚠️ Limited Stock – Order Now Before It's Gone!\u003c\/p\u003e\n\u003cp\u003eSupercharge your BMW S58 3.0L engine with the \u003cstrong\u003eMST BMW S58 Catted Downpipe (BW-S5801DP)\u003c\/strong\u003e — a precision-engineered, high-flow exhaust upgrade for M2, M3, M4, X3M, and X4M models. Dyno-proven to deliver \u003cstrong\u003e15-20 HP and 25 Nm torque gains\u003c\/strong\u003e, this catted downpipe reduces turbo lag, sharpens throttle response, and unleashes a more aggressive exhaust note — all while balancing performance with emissions compliance via its 200-cell ultra-high-flow catalyst.\u003c\/p\u003e\n\u003cdiv class=\"warning\"\u003e\n\u003cstrong\u003eImportant Note:\u003c\/strong\u003e For off-road\/race use only. Not USA 50-state legal and may not comply with emissions laws in some countries. Always check local regulations.\u003c\/div\u003e\n\u003ch2\u003eWhy Choose MST S58 Catted Downpipe for BMW Tuning?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Fitment:\u003c\/strong\u003e Cast stainless steel V-Band upper for bolt-on installation and precise alignment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Flow Catalyst:\u003c\/strong\u003e 200 cells per square inch for maximum exhaust flow without sacrificing emissions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Works flawlessly with stock tunes or aftermarket remaps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo CEL Guarantee:\u003c\/strong\u003e Zero check engine lights from the catalyst — backed by our 2-year warranty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProven Performance:\u003c\/strong\u003e Dyno-tested gains with improved turbo spool and sound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Premium stainless steel construction for long-lasting performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatible BMW S58 Models\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBMW M2 (G87, 2023+)\u003c\/li\u003e\n\u003cli\u003eBMW M3 (G80\/G81, 2021+)\u003c\/li\u003e\n\u003cli\u003eBMW M4 (G82\/G83, 2021+)\u003c\/li\u003e\n\u003cli\u003eBMW X3M (G01, 2019+)\u003c\/li\u003e\n\u003cli\u003eBMW X4M (G02, 2019+)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Confirm GPF\/OPF-equipped vs. non-GPF versions for perfect fit. Contact us for verification.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003ePerformance Gains – Dyno-Tested Results\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eUpgrade\u003c\/th\u003e\n\u003cth\u003eHorsepower Gain\u003c\/th\u003e\n\u003cth\u003eTorque Gain\u003c\/th\u003e\n\u003cth\u003eKey Benefits\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMST S58 Catted Downpipe\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e15-20 HP\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e25 Nm\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReduced turbo lag, sharper throttle, aggressive sound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eGains measured at the wheels on stock or tuned S58 engines. Actual results may vary based on vehicle condition and setup.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eKey Specifications \u0026amp; Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalyst Type:\u003c\/strong\u003e 200-cell high-flow metallic substrate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e T304 stainless steel (full construction)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnections:\u003c\/strong\u003e V-Band flanges for easy install\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2 years on catalytic converter (CEL-related only)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Lightweight design for better handling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound Profile:\u003c\/strong\u003e Deeper, more aggressive exhaust note without drone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Guide – Bolt-On Simplicity\u003c\/h2\u003e\n\u003cp\u003eDesigned for DIY or professional install. Basic tools required (jack stands, wrenches, O2 sensor socket). Typical install time: 1-2 hours.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eRaise vehicle and secure on stands\u003c\/li\u003e\n\u003cli\u003eRemove stock downpipe (disconnect O2 sensors carefully)\u003c\/li\u003e\n\u003cli\u003eBolt on MST downpipe using V-Band clamps\u003c\/li\u003e\n\u003cli\u003eReconnect sensors and lower vehicle\u003c\/li\u003e\n\u003cli\u003eTest drive and monitor for any codes (none expected!)\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cem\u003ePro Tip:\u003c\/em\u003e Pair with an ECU tune for maximum gains. Need help? Our support team is ready.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions (FAQs) – S58 Downpipe\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this trigger a Check Engine Light?\u003c\/strong\u003e\u003cbr\u003eNo — our 200-cell cat ensures compliance. If CEL occurs due to the catalyst, we'll replace it free under warranty (you cover shipping).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it street-legal?\u003c\/strong\u003e\u003cbr\u003eFor off-road\/race use only. Not CARB-approved or legal in all regions — verify local laws.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat about warranty claims?\u003c\/strong\u003e\u003cbr\u003e2-year coverage on cat. Return your old unit via original dealer for verification.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternational Shipping?\u003c\/strong\u003e\u003cbr\u003eYes, but you're responsible for duties\/taxes. U.S. imports may face tariffs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGPF\/OPF Compatibility?\u003c\/strong\u003e\u003cbr\u003eFits both — double-check your model before ordering.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"font-weight: 400;\"\u003eMST Performance Cold Air Intake\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/article\u003e\n\u003cstyle\u003e\n        body {font-family: Arial, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px;}\n        h1, h2, h3 {color: #111;}\n        table {width: 100%; border-collapse: collapse; margin: 20px 0;}\n        th, td {border: 1px solid #ddd; padding: 12px; text-align: left;}\n        th {background-color: #f4f4f4;}\n        .price {font-size: 2.5em; color: #d00; font-weight: bold;}\n        .btn {display: inline-block; background: #d00; color: white; padding: 18px 45px; text-decoration: none; border-radius: 6px; font-size: 1.6em; margin: 20px 0;}\n        .stock {color: #d00; font-weight: bold; font-size: 1.2em;}\n        ul, ol {padding-left: 22px;}\n        li {margin: 8px 0;}\n        .warning {background: #fff3cd; border: 1px solid #ffeaa7; padding: 15px; border-radius: 5px; color: #856404;}\n    \u003c\/style\u003e","brand":"MST Performance","offers":[{"title":"Default Title","offer_id":43428986355830,"sku":"M086 BW-S5801DP","price":2486.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2018\/1233\/files\/kies-motorsports-mst-mst-2021-g80-m3-g82-m4-competition-s58-catted-downpipe-bw-s5801dp-1174003360.jpg?v=1779306862","url":"https:\/\/www.bmptuning.com\/products\/mst-performance-2021-g80-m3-g82-m4-competition-s58-catted-downpipe","provider":"BMP Tuning","version":"1.0","type":"link"}