{"title":"Downpipes","description":"","products":[{"product_id":"n26-mad-downpipe-w-bracket-228-328-428","title":"N26 Catless Downpipe","description":"\u003cp\u003eUnlock the full potential of your N26 with the Catless Downpipe. Designed for US-market F-chassis BMW models running the N26 2.0L twin-scroll turbo four (the ULEV II-emissions variant of the N20), this catless downpipe eliminates the restrictive factory catalytic converter and the additional emissions equipment that BMW added for stricter US smog regulations. Real power gains, faster spool, and the proper turbo-four soundtrack the OEM exhaust completely buries.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\u003cp\u003e* Catless High-Flow Design: Removes the restrictive OEM catalytic converter and emissions equipment. Faster turbo spool, reduced backpressure, and noticeable top-end gains. Typical Stage 2 builds see 20-35 WHP and 25-35 WTQ improvements when paired with a proper tune.\u003c\/p\u003e\n\u003cp\u003e* N26 Sound Transformation: Unmuffles the N26 turbo four. Deeper exhaust note, audible turbo spool, blow-off chatter, and the overrun pops that BMW engineered out of the factory exhaust.\u003c\/p\u003e\n\u003cp\u003e* N26 Specific Engineering: Built specifically for the N26 engine layout and exhaust routing. The N26 uses different emissions equipment than the N20 — verify your engine code (N26B20) before ordering, as N20 variants require a different downpipe.\u003c\/p\u003e\n\u003cp\u003e* 3\" T304 Stainless Construction: Mandrel-bent piping with CNC-machined OEM flanges, hand TIG-welded throughout. Corrosion-proof, heat-tolerant, built to handle high-boost builds and sustained track use.\u003c\/p\u003e\n\u003cp\u003e* Direct OEM Flange Fitment: Bolts straight to the OEM turbo outlet and stock mid-pipe section. No cutting, no welding, no custom fabrication required. Compatible with both RWD and xDrive variants.\u003c\/p\u003e\n\u003cp\u003e* Stage 2 Build Foundation: Required for serious tune levels. Pairs perfectly with MHD, JB4, Bootmod3, FMIC upgrades, and intake systems.\u003c\/p\u003e\n\u003cp\u003eIMPORTANT COMPLIANCE NOTE: Catless downpipes are designed for OFF-ROAD \/ TRACK USE ONLY. Removes the catalytic converter required for road registration in Australia, the US, and most international markets. NOT legal for road-registered vehicles. Will trigger check engine lights and emissions codes without proper tuning.\u003c\/p\u003e\n\u003cp\u003eTUNE REQUIRED: To unlock full power potential and clear fault codes, a custom or off-the-shelf tune (MHD, JB4, Bootmod3, etc.) is required after fitment.\u003c\/p\u003e","brand":"NuroTech™","offers":[{"title":"Default Title","offer_id":51318947053883,"sku":"N26-DP","price":349.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/8273\/4139\/files\/Untitled_1080x1080px_40.png?v=1780835531"},{"product_id":"n20-downpipe-w-bracket-mad-bmw-228-328-428","title":"N20 Downpipe Catless Downpipe","description":"\u003cp\u003eUnlock the full potential of your N20 with the Catless Downpipe. Designed for F-chassis BMW models running the N20 2.0L twin-scroll turbo four, this catless downpipe eliminates the restrictive factory catalytic converter and opens up real power, faster spool, and the proper turbo-four soundtrack the OEM exhaust completely buries. The foundational mod for any Stage 2 N20 build — F30 328i, F32 428i, F22 228i, F10 528i, and X-Series 28i.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\u003cp\u003e* Catless High-Flow Design: Removes the restrictive OEM catalytic converter. Faster turbo spool, reduced backpressure, and noticeable top-end gains. Typical Stage 2 builds see 20-35 WHP and 25-35 WTQ improvements when paired with a proper tune.\u003c\/p\u003e\n\u003cp\u003e* N20 Sound Transformation: Unmuffles the N20 turbo four. Deeper exhaust note, audible turbo spool, blow-off chatter, and the pronounced overrun pops that BMW engineered out of the factory exhaust.\u003c\/p\u003e\n\u003cp\u003e* F-Chassis Specific Engineering: Built specifically for F-series N20 chassis layouts and exhaust routing. NOT cross-compatible with E-chassis N20 cars (E84 X1 28i, E89 Z4 28i) — exhaust geometry, flange placement, and length differ.\u003c\/p\u003e\n\u003cp\u003e* 3\" T304 Stainless Construction: Mandrel-bent piping with CNC-machined OEM flanges, hand TIG-welded throughout. Corrosion-proof, heat-tolerant, built to handle high-boost builds and sustained track use.\u003c\/p\u003e\n\u003cp\u003e* Direct OEM Flange Fitment: Bolts straight to the OEM turbo outlet and stock mid-pipe section. No cutting, no welding, no custom fabrication required. Compatible with both RWD and xDrive variants.\u003c\/p\u003e\n\u003cp\u003e* Stage 2 Build Foundation: Required for serious tune levels. Pairs perfectly with MHD, JB4, Bootmod3, FMIC upgrades, and intake systems. The first step in unlocking what the N20 is actually capable of.\u003c\/p\u003e\n\u003cp\u003eIMPORTANT COMPLIANCE NOTE: Catless downpipes are designed for OFF-ROAD \/ TRACK USE ONLY. Removes the catalytic converter required for road registration in Australia and most international markets. NOT legal for road-registered vehicles. Will trigger check engine lights and emissions codes without proper tuning.\u003c\/p\u003e\n\u003cp\u003eTUNE REQUIRED: To unlock full power potential and clear fault codes, a custom or off-the-shelf tune (MHD, JB4, Bootmod3, etc.) is required after fitment.\u003c\/p\u003e","brand":"NuroTech™","offers":[{"title":"Default Title","offer_id":51318947086651,"sku":"N20-CDP","price":399.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/8273\/4139\/files\/Untitled_1080x1080px_39.png?v=1780833401"},{"product_id":"n55-e-chassis-cen-cal-downpipe","title":"N55 E Chassis Downpipe","description":"\u003cp\u003eUnlock the full potential of your E-chassis N55 with the Catless Downpipe. Designed specifically for E-series BMW models running the N55 single twin-scroll turbo six, this catless downpipe eliminates the restrictive factory catalytic converter, opens up exhaust flow for serious top-end gains, and gives the N55 the unmuffled voice it should have come with. The foundational mod for any Stage 2 build on an E-chassis N55 car.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\u003cp\u003e* Catless High-Flow Design: Removes the restrictive OEM catalytic converter. Faster turbo spool, reduced backpressure, and noticeable top-end gains. Typical Stage 2 builds see 25-40 WHP and 30-40 WTQ improvements when paired with a proper tune.\u003c\/p\u003e\n\u003cp\u003e* N55 Sound Transformation: Unmuffles the N55 turbo six. Deeper exhaust note, pronounced overrun pops, audible blow-off chatter, and the kind of single-turbo character the OEM exhaust hides completely.\u003c\/p\u003e\n\u003cp\u003e* E-Chassis Specific Engineering: Built specifically for E-series N55 chassis layouts and exhaust routing. NOT cross-compatible with F-chassis N55 cars — exhaust geometry, flange placement, and length are different.\u003c\/p\u003e\n\u003cp\u003e* 3\" T304 Stainless Construction: Mandrel-bent piping with CNC-machined OEM flanges, hand TIG-welded throughout. Corrosion-proof, heat-tolerant, built to handle high-boost builds and sustained track use.\u003c\/p\u003e\n\u003cp\u003e* Direct OEM Flange Fitment: Bolts straight to the OEM turbo outlet and stock mid-pipe section. No cutting, no welding, no custom fabrication required.\u003c\/p\u003e\n\u003cp\u003e* Stage 2 Build Foundation: Required for serious tune levels. Pairs perfectly with MHD, JB4, Bootmod3, FMIC upgrades, methanol injection, and bigger turbo conversions.\u003c\/p\u003e\n\u003cp\u003eIMPORTANT COMPLIANCE NOTE: Catless downpipes are designed for OFF-ROAD \/ TRACK USE ONLY. Removes the catalytic converter required for road registration in Australia and most international markets. NOT legal for road-registered vehicles. Will trigger check engine lights and emissions codes without proper tuning.\u003c\/p\u003e\n\u003cp\u003eTUNE REQUIRED: To unlock full power potential and clear fault codes, a custom or off-the-shelf tune (MHD, JB4, Bootmod3, etc.) is required after fitment.\u003c\/p\u003e\n\u003cp\u003eCRITICAL FITMENT NOTE: Many of these chassis were available with both N54 (twin-turbo) and N55 (single twin-scroll turbo) engines. Verify your engine code (N55B30) before ordering — N54 variants require a different downpipe.\u003c\/p\u003e","brand":"NuroTech™","offers":[{"title":"Default Title","offer_id":51318947119419,"sku":"N55E9XDP","price":349.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/8273\/4139\/files\/Untitled_1080x1080px_36.png?v=1780833222"},{"product_id":"x3m-x4m-s58-f97-f98-catless-downpipes","title":"BMW X3M\/X4M S58 Catless Downpipes","description":"\u003cp\u003eUnlock the full potential of your X3M or X4M with the S58 Catless Downpipes. Designed exclusively for the F97 X3M and F98 X4M running the S58 twin-turbo inline-six, this catless downpipe set eliminates the restrictive factory catalytic converters that BMW fitted to choke the most aggressive M SUV they've ever built. Significant power gains, dramatic exhaust flow improvements, and the kind of S58 soundtrack the X3M and X4M should have come with from the factory.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\u003cp\u003e* Catless High-Flow Design: Removes both restrictive OEM catalytic converters. Faster turbo spool, reduced backpressure, and noticeable top-end gains. Typical Stage 2 builds see 30-50+ WHP and 30-40 WTQ improvements when paired with a proper tune.\u003c\/p\u003e\n\u003cp\u003e* S58 Sound Transformation: Unmuffles the S58 twin-turbo six. Deeper exhaust note, pronounced overrun crackles, more aggressive top-end snarl, and the kind of motorsport-spec voice that finally matches what these X cars can actually do.\u003c\/p\u003e\n\u003cp\u003e* F97 \/ F98 Specific Engineering: Engineered exclusively for the BMW F97 X3M, F97 X3M Competition, F98 X4M, and F98 X4M Competition (2019-2024) running the S58 engine. Confirm exact chassis and year before ordering.\u003c\/p\u003e\n\u003cp\u003e* 3\" T304 Stainless Construction: Mandrel-bent piping with CNC-machined OEM flanges, hand TIG-welded throughout. Corrosion-proof, heat-tolerant, built to handle high-boost builds and sustained track use.\u003c\/p\u003e\n\u003cp\u003e* Direct OEM Flange Fitment: Bolts straight to the OEM turbo outlets and stock mid-pipe section. No cutting, no welding, no custom fabrication required.\u003c\/p\u003e\n\u003cp\u003e* Stage 2 Build Foundation: Required for serious tune levels. Pairs perfectly with MHD, Bootmod3, and bM3 tunes, FMIC upgrades, and intake systems. The first proper step in unlocking what the S58 in an X3M \/ X4M can really do.\u003c\/p\u003e\n\u003cp\u003eIMPORTANT COMPLIANCE NOTE: Catless downpipes are designed for OFF-ROAD \/ TRACK USE ONLY. Removes the catalytic converters required for road registration in Australia and most international markets. NOT legal for road-registered vehicles. Will trigger check engine lights and emissions codes without proper tuning. Will not pass any emissions inspection.\u003c\/p\u003e\n\u003cp\u003eTUNE REQUIRED: To unlock full power potential and clear fault codes, a custom or off-the-shelf tune (MHD, Bootmod3, etc.) is required after fitment.\u003c\/p\u003e","brand":"NuroTech™","offers":[{"title":"Default Title","offer_id":51318947152187,"sku":"X3\/4MCDP","price":799.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/8273\/4139\/files\/Untitled_1080x1080px_37.png?v=1780833256"},{"product_id":"n55-f-series-cencal-downpipe","title":"N55 Catless Downpipe BMW M135 M235 M2 335 435","description":"\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\u003csection data-turn=\"assistant\" data-scroll-anchor=\"false\" data-testid=\"conversation-turn-152\" data-turn-id-container=\"request-69fcbaf1-9ee0-8324-9096-7ff85efe3ad6-13\" data-turn-id=\"request-69fcbaf1-9ee0-8324-9096-7ff85efe3ad6-13\" dir=\"auto\" class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-turn-start-message=\"true\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-message-model-slug=\"gpt-5-3-mini\" dir=\"auto\" data-message-id=\"701046a7-796b-440e-8596-1470b56c7d85\" data-message-author-role=\"assistant\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp\u003eUnlock the full potential of your F-chassis N55 with the Catless Downpipe. Designed specifically for F-series BMW models running the N55 single twin-scroll turbo six, this catless downpipe eliminates the restrictive factory catalytic converter and opens up real top-end power, faster spool, and the kind of N55 soundtrack the OEM exhaust completely buries. The foundational mod for any Stage 2 F-chassis N55 build — M135i, M235i, F87 M2, 335i, 435i, 535i, 640i, and X-Series 35i.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\u003cp\u003e* Catless High-Flow Design: Removes the restrictive OEM catalytic converter. Faster turbo spool, reduced backpressure, and noticeable top-end gains. Typical Stage 2 builds see 25-40 WHP and 30-40 WTQ improvements when paired with a proper tune.\u003c\/p\u003e\n\u003cp\u003e* N55 Sound Transformation: Unmuffles the N55 turbo six. Deeper exhaust note, pronounced overrun pops, audible blow-off chatter, and the kind of single-turbo character the OEM exhaust hides completely.\u003c\/p\u003e\n\u003cp\u003e* F-Chassis Specific Engineering: Built specifically for F-series N55 chassis layouts and exhaust routing. NOT cross-compatible with E-chassis N55 cars — exhaust geometry, flange placement, and length are different.\u003c\/p\u003e\n\u003cp\u003e* 3\" T304 Stainless Construction: Mandrel-bent piping with CNC-machined OEM flanges, hand TIG-welded throughout. Corrosion-proof, heat-tolerant, built to handle high-boost builds and sustained track use.\u003c\/p\u003e\n\u003cp\u003e* Direct OEM Flange Fitment: Bolts straight to the OEM turbo outlet and stock mid-pipe section. No cutting, no welding, no custom fabrication required. Compatible with both RWD and xDrive variants of supported chassis.\u003c\/p\u003e\n\u003cp\u003e* Stage 2 Build Foundation: Required for serious tune levels. Pairs perfectly with MHD, JB4, Bootmod3, FMIC upgrades, methanol injection, and bigger turbo conversions.\u003c\/p\u003e\n\u003cp\u003eIMPORTANT COMPLIANCE NOTE: Catless downpipes are designed for OFF-ROAD \/ TRACK USE ONLY. Removes the catalytic converter required for road registration in Australia and most international markets. NOT legal for road-registered vehicles. Will trigger check engine lights and emissions codes without proper tuning.\u003c\/p\u003e\n\u003cp\u003eTUNE REQUIRED: To unlock full power potential and clear fault codes, a custom or off-the-shelf tune (MHD, JB4, Bootmod3, etc.) is required after fitment.\u003c\/p\u003e\n\u003cp\u003eFITMENT NOTE: F-Chassis F87 M2 (2016-2018) refers to the pre-Competition N55-powered M2 only. F87 M2 Competition \/ M2 CS (2018+) uses the S55 engine and requires a different downpipe.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"NuroTech™","offers":[{"title":"Default Title","offer_id":51318947217723,"sku":null,"price":399.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/8273\/4139\/files\/Untitled_1080x1080px_38.png?v=1780833289"},{"product_id":"n54-catless-downpipes-cen-cal","title":"N54 Catless Downpipes","description":"\u003cp\u003eUnlock the legendary power potential of your N54 with the Catless Downpipes. Designed for every N54-powered BMW — 335i, 135i, 535i, 740i, Z4 35i, and beyond — this catless downpipe set eliminates the restrictive factory catalytic converters that BMW fitted to muffle and choke the most tuner-friendly engine they ever built. The single most impactful bolt-on you can do to an N54, and a foundational mod for any Stage 2 or higher build.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\u003cp\u003e* Catless High-Flow Design: Eliminates the restrictive OEM catalytic converters entirely — opens up exhaust flow dramatically, unlocking real top-end power, faster turbo spool, and a more responsive throttle. Typical builds see 20-40+ wheel horsepower gains when paired with a proper tune.\u003c\/p\u003e\n\u003cp\u003e* N54 Sound Transformation: Removes the muffling effect of the OEM cats — the N54 finally sounds the way the twin-turbo straight-six should, with deeper bass tones, pronounced overrun burbles, blow-off chatter, and that signature N54 snarl that defines the engine's reputation.\u003c\/p\u003e\n\u003cp\u003e* Wide N54 Chassis Compatibility: Engineered for the N54 engine across every chassis it was fitted to — E90 \/ E91 \/ E92 \/ E93 335i, E82 \/ E88 135i, E60 535i, F01 \/ F02 740i, E89 Z4 35i \/ 35is, and beyond. Confirm your exact chassis and year before ordering.\u003c\/p\u003e\n\u003cp\u003e* Premium Stainless Steel Construction: Built from T304 stainless steel for corrosion resistance, heat tolerance, and long-term durability under Australian conditions — handles daily driving, track use, and high-boost builds without rusting, cracking, or failing welds.\u003c\/p\u003e\n\u003cp\u003e* Direct OEM Flange Fitment: Precision-machined flanges and clamps designed to match factory mounting points — bolts directly to the OEM turbo outlets and mid-pipe section without any cutting, welding, or custom fabrication.\u003c\/p\u003e\n\u003cp\u003e* The Foundation Mod for Every N54 Build: Required for serious tune levels (Stage 2 and beyond) — pairs perfectly with MHD, JB4, or Bootmod3 tunes, FMIC, methanol injection, and bigger turbo conversions. The first real step toward unlocking what the N54 can actually do.\u003c\/p\u003e\n\u003cp\u003eIMPORTANT COMPLIANCE NOTE: Catless downpipes are designed for OFF-ROAD \/ TRACK USE ONLY. Removes the catalytic converters required for road registration in Australia and most international markets — NOT legal for road-registered vehicles. Will trigger check engine lights and emissions codes without proper tuning. Will not pass any emissions inspection. Verify your intended use case and local regulations before ordering.\u003c\/p\u003e\n\u003cp\u003eTUNE REQUIRED: To unlock full power potential and eliminate fault codes, a custom or off-the-shelf tune (MHD, JB4, Bootmod3, etc.) is required after fitment.\u003c\/p\u003e","brand":"NuroTech™","offers":[{"title":"Default Title","offer_id":51318947381563,"sku":"N54DP","price":399.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/8273\/4139\/files\/N54CATLESSDPNUROPERF.png?v=1780831069"},{"product_id":"g8x-m2-m3-m4-s58-titanium-catless-downpipes","title":"G8X M2\/M3\/M4 S58 Titanium Catless Downpipes","description":"\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-69fcbaf1-9ee0-8324-9096-7ff85efe3ad6-8\" data-turn-id-container=\"request-69fcbaf1-9ee0-8324-9096-7ff85efe3ad6-8\" data-testid=\"conversation-turn-200\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"a51791fe-3a87-4d52-93e3-02b6143a0e4b\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"a51791fe-3a87-4d52-93e3-02b6143a0e4b\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp\u003eUnlock the full potential of your G8X M car with the S58 Titanium Catless Downpipes. Designed exclusively for the G80 M3, G82 M4, and G87 M2 running the S58 twin-turbo inline-six, this premium titanium downpipe set eliminates the restrictive factory catalytic converters and primary heat shielding — delivering significant power gains, dramatic weight reduction, and the kind of S58 soundtrack BMW engineered the engine to make before emissions regs got in the way. The single most impactful bolt-on you can do to a G8X M car.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\u003cp\u003e* Genuine Titanium Construction: Built from aerospace-grade titanium for maximum strength at minimum weight — saves up to 40% over OEM steel downpipes while delivering superior heat resistance, corrosion immunity, and the iconic titanium blue \/ gold burn finish around the welds.\u003c\/p\u003e\n\u003cp\u003e* Catless High-Flow Design: Eliminates the restrictive OEM catalytic converters entirely — opens up exhaust flow dramatically, unlocking real top-end power, faster turbo spool, and a more responsive throttle. Typical builds see 30-50+ wheel horsepower gains when paired with a proper tune.\u003c\/p\u003e\n\u003cp\u003e* True S58 Sound Transformation: Removes the muffling effect of the OEM cats — the S58 finally sounds the way it should, with deeper bass tones, sharper top-end snarl, more pronounced overrun burbles, and a serious motorsport-spec voice that rivals naturally aspirated V8s.\u003c\/p\u003e\n\u003cp\u003e* G8X Multi-Chassis Fitment: Engineered for the BMW G80 M3 (2021+), G82 M4 Coupe (2021+), G83 M4 Convertible (2021+), and G87 M2 (2023+) — every G-chassis S58-powered M car. Confirm your exact chassis code before ordering.\u003c\/p\u003e\n\u003cp\u003e* Direct OEM Flange Fitment: Precision-machined flanges and clamps designed to match factory mounting points and turbo outlets — bolts directly to the OEM turbo flanges and mid-pipe without any cutting, welding, or custom fabrication.\u003c\/p\u003e\n\u003cp\u003e* Built for Power \u0026amp; Track Use: Designed to handle high horsepower builds, sustained track use, and the thermal load of pushed S58 engines — won't crack, warp, or fail at the welds like cheaper stainless catless options.\u003c\/p\u003e\n\u003cp\u003eIMPORTANT COMPLIANCE NOTE: Catless downpipes are designed for OFF-ROAD \/ TRACK USE ONLY. Removes the catalytic converters required for road registration in Australia and most international markets — NOT legal for road-registered vehicles. Will trigger check engine lights and emissions codes without proper tuning. Will not pass any emissions inspection. Verify your intended use case and local regulations before ordering.\u003c\/p\u003e\n\u003cp\u003eTUNE REQUIRED: To unlock full power potential and eliminate fault codes, a custom or off-the-shelf tune (Bootmod3, MHD, etc.) is required after fitment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"NuroTech™","offers":[{"title":"Default Title","offer_id":51318947414331,"sku":null,"price":1449.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/8273\/4139\/files\/Untitled_1080x1080px_34.png?v=1780828838"},{"product_id":"b48-catless-downpipe-f-g-series","title":"B48 Catless Downpipe F \u0026 G Series","description":"\u003cp\u003eUnlock the full potential of your B48-powered BMW with the Catless Downpipe. Designed for both F-chassis and G-chassis BMW models running the B48 2.0L twin-scroll turbo four, this catless downpipe eliminates the restrictive factory catalytic converter and opens up real top-end power, faster spool, and the proper turbo-four soundtrack the OEM exhaust completely buries. Available in four chassis-specific variants — pick your fitment at checkout. The foundational mod for any Stage 2 B48 build.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\u003cp\u003e* Catless High-Flow Design: Removes the restrictive OEM catalytic converter. Faster turbo spool, reduced backpressure, and noticeable top-end gains. Typical Stage 2 builds see 25-40 WHP and 25-35 WTQ improvements when paired with a proper tune.\u003c\/p\u003e\n\u003cp\u003e* B48 Sound Transformation: Unmuffles the B48 turbo four. Deeper exhaust note, audible turbo spool, blow-off chatter, and pronounced overrun crackles that BMW engineered out of the factory exhaust.\u003c\/p\u003e\n\u003cp\u003e* Four Chassis-Specific Variants: F-chassis sedan\/coupe, G-chassis sedan\/coupe, F-chassis X-Series, and G-chassis X-Series all available. Each variant is engineered for the exact exhaust routing of its chassis group — pick yours at checkout.\u003c\/p\u003e\n\u003cp\u003e* 3\" T304 Stainless Construction: Mandrel-bent piping with CNC-machined OEM flanges, hand TIG-welded throughout. Corrosion-proof, heat-tolerant, built to handle high-boost builds and sustained track use.\u003c\/p\u003e\n\u003cp\u003e* Direct OEM Flange Fitment: Bolts straight to the OEM turbo outlet and stock mid-pipe section. No cutting, no welding, no custom fabrication required. Compatible with both RWD and xDrive variants within each chassis group.\u003c\/p\u003e\n\u003cp\u003e* Stage 2 Build Foundation: Required for serious tune levels. Pairs perfectly with MHD, JB4, Bootmod3, FMIC upgrades, and intake systems. The first proper step in unlocking what the B48 is actually capable of.\u003c\/p\u003e\n\u003cp\u003eIMPORTANT FITMENT NOTE: B48 downpipes are NOT cross-compatible between F-chassis and G-chassis, or between sedan\/coupe and X-Series. Pick the correct variant for your chassis at checkout — see the fitment chart below for compatibility.\u003c\/p\u003e\n\u003cp\u003eIMPORTANT COMPLIANCE NOTE: Catless downpipes are designed for OFF-ROAD \/ TRACK USE ONLY. Removes the catalytic converter required for road registration in Australia and most international markets. NOT legal for road-registered vehicles. Will trigger check engine lights and emissions codes without proper tuning.\u003c\/p\u003e\n\u003cp\u003eTUNE REQUIRED: To unlock full power potential and clear fault codes, a custom or off-the-shelf tune (MHD, JB4, Bootmod3, etc.) is required after fitment.\u003c\/p\u003e","brand":"NuroTech™","offers":[{"title":"F Series Sedan \/ Coupe","offer_id":51319000531259,"sku":null,"price":429.99,"currency_code":"AUD","in_stock":true},{"title":"F Series SUV \/ SUV Coupe","offer_id":51319000564027,"sku":null,"price":429.99,"currency_code":"AUD","in_stock":true},{"title":"G Series Sedan \/ Coupe","offer_id":51319000596795,"sku":null,"price":429.99,"currency_code":"AUD","in_stock":true},{"title":"G Series SUV \/ SUV Coupe","offer_id":51319000629563,"sku":null,"price":429.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/8273\/4139\/files\/Untitled_1080x1080px_41.png?v=1780837054"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/8273\/4139\/collections\/Untitled_1080_x_1080_px_35.png?v=1780831912","url":"https:\/\/nuroperformance.com\/collections\/downpipes.oembed","provider":"Nuro Performance","version":"1.0","type":"link"}