{"product_id":"b9-b9-5-2-9t-downpipes-downpipes-heat-shielded-cap-exh-011","title":"B9\/B9.5 2.9T Downpipes Downpipes Heat Shielded | Audi B9\/B9.5 RS4, RS5 2.9 TFSI | Canadian Auto Performance","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eTHE MOST AGGRESSIVE EXHAUST TRANSFORMATION AVAILABLE FOR YOUR RS4\/RS5. Can Auto Performance has been building exhaust products for Audi's performance V6 platforms since the B8 S4 days. The same obsession with material quality, weld integrity, and fitment accuracy that earned CAP's B8 S4 downpipes a zero-failure track record is what went into these downpipes for the EA839 2.9TT. BUILT TO THE SAME STANDARD AS EVERY CAP PRODUCT — NO COMPROMISES. The EA839 is one of the best engines Audi has ever built. From the factory it's also one of the most muzzled. The twin-turbo exhaust note gets filtered down to something polite and forgettable. These downpipes fix that. Pull the OEM cats and the character that's been sitting underneath comes through. Louder, rawer, with actual turbo presence at every RPM. Spool response tightens up and EGTs drop under load. If you're building toward Stage 3, downpipes are required hardware at that point anyway. Get them done now B9\/B9.5 RS4\/RS5 2.9T Downpipes\u003c\/p\u003e\n\u003ch2\u003eDetails\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eKey Features: 304 Stainless Steel - T304 austenitic stainless throughout, pipe body, flanges, and heat shield mounting.\u003c\/li\u003e\n\u003cli\u003eT304 handles the thermal cycling from EA839 exhaust temperatures without scaling, pitting, or degrading.\u003c\/li\u003e\n\u003cli\u003eIt's also corrosion-resistant in road-salt environments, which matters for Canadian and northern US climates where most of these cars are driven year-round.\u003c\/li\u003e\n\u003cli\u003eTIG Welded and Back Purged - Every CAP downpipe is TIG welded with inert gas back purging at the weld zone.\u003c\/li\u003e\n\u003cli\u003eBack purging prevents oxidation on the interior weld bead, the surface that exhaust condensate and acids contact first.\u003c\/li\u003e\n\u003cli\u003eSugared welds corrode from the inside out.\u003c\/li\u003e\n\u003cli\u003eBack-purged welds don't.\u003c\/li\u003e\n\u003cli\u003eThe result is a clean, full-penetration bead on every unit with no porosity and no variation between production runs.\u003c\/li\u003e\n\u003cli\u003eCNC Machined Flanges - Machined to OEM bolt pattern at both the turbo outlet and midpipe junction.\u003c\/li\u003e\n\u003cli\u003eBolt-on installation, no modifications to the OEM exhaust system required.\u003c\/li\u003e\n\u003cli\u003eIntegrated Heat Shielding - The EA839's underbody packaging puts the downpipes in close proximity to brake lines, chassis components, and wiring.\u003c\/li\u003e\n\u003cli\u003eThe heat shielded variant replicates OEM-level thermal protection, keeping radiant heat away from everything around it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e","brand":"Canadian Auto Performance","offers":[{"title":"Default Title","offer_id":52503744971054,"sku":"CAP-EXH-011","price":679.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/1719\/1726\/files\/2018-2024-Audi-B9-B9.5-RS4-RS5-2.9T-Downpipes-CAP-B9-B9.5-RS5-Downpipes-06.jpg?v=1787752725","url":"https:\/\/shopicwp.com\/products\/b9-b9-5-2-9t-downpipes-downpipes-heat-shielded-cap-exh-011","provider":"Inner Circle Wheels and Performance","version":"1.0","type":"link"}