{"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","url":"https:\/\/nuroperformance.com\/products\/n54-catless-downpipes-cen-cal","provider":"Nuro Performance","version":"1.0","type":"link"}