{"product_id":"milltek-large-bore-downpipe-audi-b9-a4-20-quattro-ssxau744","title":"Large Bore Downpipe | Audi B9 A4 2.0 Quattro | Milltek","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Milltek Large Bore Downpipe with Hi-Flow Sports Catalyst is engineered for the Audi B9 A4 2.0 Quattro Saloon and Avant. This direct-fit component optimizes exhaust flow from the turbocharged engine to the cat-back system, delivering measurable gains in horsepower and torque while maintaining emissions compliance.\u003c\/p\u003e\n\u003cp\u003eConstructed from T304L stainless steel with mandrel-bent 3\" (76.2 mm) piping, the downpipe features a high-flow sports catalyst rated at 200 CPSI (cells per square inch). Hand-finished construction ensures OEM+ fitment with existing Audi factory or Milltek cat-back exhaust systems. Requires Stage 2 ECU software for optimal performance mapping.\u003c\/p\u003e\n\u003ch2\u003eDetails\u003c\/h2\u003e\n\u003ch3\u003eFitment Notes \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2017+ Audi B9 A4 Saloon (2.0 TFSI EA888)\u003c\/li\u003e\n\u003cli\u003e2017+ Audi B9 A4 Avant (2.0 TFSI EA888)\u003c\/li\u003e\n\u003cli\u003eQuattro and FWD variants\u003c\/li\u003e\n\u003cli\u003eDirect fit to OEM or Milltek cat-back exhaust\u003c\/li\u003e\n\u003cli\u003eNo modifications required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDesigned and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.\u003c\/p\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":68005549703470,"sku":"SSXAU744","price":1286.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/1719\/1726\/files\/SSXAU744_1.jpg?v=1794451970","url":"https:\/\/shopicwp.com\/products\/milltek-large-bore-downpipe-audi-b9-a4-20-quattro-ssxau744","provider":"Inner Circle Wheels and Performance","version":"1.0","type":"link"}