{"product_id":"mercedes-w177-c118-a45-a45s-cla45-cla45s-amg-catless-downpipe-with-heat-shield","title":"Mercedes W177\/C118, A45\/A45S\/CLA45\/CLA45S AMG Catless Downpipe With Heat Shield","description":"\u003cp\u003eUnlock the M139 in your Mercedes-AMG A45 S or CLA45 S with this catless performance downpipe, supplied as a two-piece system with full woven heat shielding across both sections.\u003c\/p\u003e\n\u003cp\u003eThe M139 is the most powerful series-production four-cylinder ever built, and in standard form the factory downpipe is the one thing most obviously holding it back. Replacing it is the first hardware step almost every tuned A45 S and CLA45 S takes, and on this engine it matters more than usual: the turbocharger sits at the back of the head, hard against the bulkhead, so a freer path out of the turbine has an immediate effect on how quickly it builds boost.\u003c\/p\u003e\n\u003cp\u003eManufactured from premium T304 stainless steel and precision TIG welded throughout, with heat shielding wrapped over the full length to keep radiant heat off the bulkhead and the components packed in around it.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCatless Configuration\u003c\/strong\u003e\u003cbr\u003eRemoves the restrictive factory catalyst entirely for maximum exhaust flow and a much harder tone. (For off-road or track use only.)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFull Woven Heat Shielding\u003c\/strong\u003e\u003cbr\u003eBoth sections are wrapped, not just the elbow. On an engine with its turbo against the firewall that is a genuine requirement rather than a styling touch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePremium T304 Stainless Steel\u003c\/strong\u003e\u003cbr\u003eHigh-grade, corrosion-resistant material built to withstand the exhaust gas temperatures a tuned M139 produces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Braided Joint\u003c\/strong\u003e\u003cbr\u003eAbsorbs engine movement and driveline flex so the system is not stressed at the turbo flange, a common failure point on rigid aftermarket pipes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTwo-Piece Design\u003c\/strong\u003e\u003cbr\u003eSplits into two sections for installation, which matters in an engine bay this tightly packed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDirect Bolt-On Fitment\u003c\/strong\u003e\u003cbr\u003eMounts to the factory turbo flange and mid section using the original brackets and hangers, with no cutting or fabrication required.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePerformance Benefits (When Tuned)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003eIncreases of \u003cstrong\u003e30-40 HP\u003c\/strong\u003e and \u003cstrong\u003e50-70 Nm\u003c\/strong\u003e of torque\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eNoticeably faster turbo spool and sharper throttle response\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eDeeper, harder exhaust note with far more turbo and wastegate character\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eLower exhaust gas temperatures and reduced heat soak under sustained load\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003eMercedes-AMG A45 \/ A45 S - W177 (2019-2025)\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eMercedes-AMG CLA45 \/ CLA45 S - C118 (2019-2025)\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eMercedes-AMG GLA45 S - H247 (2020-2025)\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e2.0L Turbocharged M139 Engine\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eM139 Only - This Will Not Fit an Earlier A45\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe M139 turns the cylinder head around compared with the M133 that came before it. The intake sits at the front and the exhaust side faces the bulkhead, so the turbocharger is mounted at the back of the engine rather than the front. That is why the M139 makes so much more power from the same capacity, and it is also why the exhaust hardware is completely different.\u003c\/p\u003e\n\u003cp\u003eThis downpipe fits the \u003cstrong\u003eW177, C118 and H247\u003c\/strong\u003e cars only. If you have a \u003cstrong\u003eW176 A45\u003c\/strong\u003e or \u003cstrong\u003eC117 CLA45\u003c\/strong\u003e, that is the M133 and it takes our W176\/C117 downpipe instead. The two are not interchangeable in either direction.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003ePlease Note\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a catless downpipe intended for off-road or motorsport use only and may not comply with local emissions laws. An ECU tune is strongly recommended to realise the full benefit of the part and to manage the check engine light that removing the catalyst will otherwise trigger. Professional installation is recommended.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhy Choose Proven Performance Parts\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWe specialise in high-performance parts for European vehicles — Volkswagen GTI \u0026amp; R models, Audi S\/RS platforms, BMW M cars and Mercedes-AMG. Every product we offer is carefully selected for its quality, fitment, and real-world performance — tested by enthusiasts, for enthusiasts.\u003c\/p\u003e","brand":"Proven Performance Parts","offers":[{"title":"Mercedes-AMG W177 A45 \/ A45 S (2019-2025)","offer_id":52869529043226,"sku":null,"price":895.0,"currency_code":"AUD","in_stock":true},{"title":"Mercedes-AMG C118 CLA45 \/ CLA45 S (2019-2025)","offer_id":52869529075994,"sku":null,"price":895.0,"currency_code":"AUD","in_stock":true},{"title":"Mercedes-AMG H247 GLA45 S (2020-2025)","offer_id":52869844238618,"sku":null,"price":895.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/1177\/4490\/files\/1_1837b427-1867-4971-8338-af7baca3f46d.png?v=1789369742","url":"https:\/\/provenperformanceparts.com.au\/products\/mercedes-w177-c118-a45-a45s-cla45-cla45s-amg-catless-downpipe-with-heat-shield","provider":"Proven Performance Parts","version":"1.0","type":"link"}