{"product_id":"mercedes-benz-w205-c63-c63s-amg-catless-downpipe-with-heatshield","title":"Mercedes Benz W205, C63\/C63s AMG Catless Downpipe With Heatshield","description":"\u003cp\u003eThe catless gain, with the heat kept where it belongs. This Catless Downpipe kit removes both factory catalytic converters from the Mercedes-AMG C63 and C63S and wraps the replacement pipes and extensions in full woven heat shielding.\u003c\/p\u003e\n\u003cp\u003eTaking both catalysts out is the largest single reduction in backpressure available to the M177, and it is where the real gains from a Stage 2 tune come from. What the shielding adds is liveability: the hot-vee V8 packs its turbochargers and downpipes tightly together, so radiant heat from bare pipes reaches wiring, hoses and the bonnet liner. Woven shielding over the full length keeps that heat in the exhaust.\u003c\/p\u003e\n\u003cp\u003eManufactured from T304 stainless steel with mandrel bends and precision TIG welding throughout, with the factory sensor bungs retained.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003ch3\u003eFull Catalyst Delete, Both Banks\u003c\/h3\u003e\n\u003cp\u003eThe greatest single restriction in the system removed on each side, for maximum exhaust flow and the largest gain a downpipe can deliver.\u003c\/p\u003e\u003ch3\u003eSupplied as a Matched Pair\u003c\/h3\u003e\n\u003cp\u003eThe M177 is a hot-vee V8 with both turbochargers mounted inside the vee, so it runs two downpipes - one per bank. This kit replaces both, with the matching extension pipes and clamps. Changing only one leaves half the restriction in place.\u003c\/p\u003e\u003ch3\u003eFull Woven Heat Shielding\u003c\/h3\u003e\n\u003cp\u003eWrapped over the length of both pipes and extensions, reducing radiant heat into the engine bay and protecting the components packed around them.\u003c\/p\u003e\n\u003ch3\u003eT304 Stainless Steel Construction\u003c\/h3\u003e\n\u003cp\u003eHigh-grade, corrosion-resistant material built to withstand the exhaust gas temperatures a tuned M177 produces.\u003c\/p\u003e\n\u003ch3\u003eFactory Sensor Bungs Retained\u003c\/h3\u003e\n\u003cp\u003eThe oxygen sensors plug straight back into their original positions on both pipes.\u003c\/p\u003e\n\u003ch3\u003eSmooth Mandrel Bends\u003c\/h3\u003e\n\u003cp\u003eConsistent bore through every bend, so the gain is in flow rather than just in volume.\u003c\/p\u003e\n\u003ch3\u003eDirect Bolt-On Fitment\u003c\/h3\u003e\n\u003cp\u003eMounts to the factory turbo flanges and mid section using the original mounting points and the supplied clamps, with no cutting or fabrication.\u003c\/p\u003e\n\u003ch2\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cp\u003e The largest power and torque gain available from a single exhaust part when tuned\u003cbr\u003e Markedly faster spool on both turbochargers\u003cbr\u003e Sharper throttle response\u003cbr\u003e A deeper, harder-edged V8 exhaust note\u003cbr\u003e Maximum reduction in backpressure\u003cbr\u003e Lower under-bonnet temperatures than an unshielded catless kit\u003c\/p\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003eMercedes-AMG C63 (W205, 2015-2021)\u003cbr\u003eMercedes-AMG C63S (W205, 2015-2021)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4.0L Twin-Turbocharged M177 V8 Engine\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSupplied as a matched left and right pair with extension pipes. The C63 and C63S share the same M177 engine and downpipe layout, so one kit covers both.\u003c\/p\u003e\u003ch2\u003ePlease Note\u003c\/h2\u003e\n\u003cp\u003eRemoving a catalytic converter is not legal for road use in Australia. This part is intended for off-road, track and motorsport use only, and it is the owner's responsibility to comply with the regulations in their state.\u003c\/p\u003e\n\u003cp\u003eA catless downpipe will trigger a check engine light without a supporting ECU tune. An ECU tune is required, and professional installation is recommended.\u003c\/p\u003e\u003ch2\u003eWhy Choose Proven Performance Parts\u003c\/h2\u003e\n\u003cp\u003eWe specialise in high-performance parts for European vehicles - including Volkswagen GTI \u0026amp; R models, Audi S\/RS platforms, and Mercedes-AMG applications. 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 W205 C63 (2015-2021)","offer_id":52901414568218,"sku":null,"price":1135.0,"currency_code":"AUD","in_stock":true},{"title":"Mercedes-AMG W205 C63S (2015-2021)","offer_id":52901414600986,"sku":null,"price":1135.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/1177\/4490\/files\/att7.png?v=1789654325","url":"https:\/\/provenperformanceparts.com.au\/products\/mercedes-benz-w205-c63-c63s-amg-catless-downpipe-with-heatshield","provider":"Proven Performance Parts","version":"1.0","type":"link"}