{"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","url":"https:\/\/nuroperformance.com\/products\/x3m-x4m-s58-f97-f98-catless-downpipes","provider":"Nuro Performance","version":"1.0","type":"link"}