{"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","url":"https:\/\/nuroperformance.com\/products\/b48-catless-downpipe-f-g-series","provider":"Nuro Performance","version":"1.0","type":"link"}