{"product_id":"milltek-downpipes-with-cat-bypass-mercedes-c-class-c63-s-w205-saloon-4-0-bi-turbo-v8-non-gpf-15","title":"Milltek Downpipes with Cat Bypass Mercedes C-Class C63 S W205 Saloon 4.0 Bi-Turbo V8 Non-GPF 15+","description":"\u003ch2\u003eMilltek Downpipes \u0026amp; Cat Bypass Pipes for Mercedes C-Class C63 \u0026amp; C63 S (W205) Saloon 4.0 Bi-Turbo V8 (Non-GPF Equipped Models Only) (2015 onwards) – Maximum Flow, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe and de-cat for the Mercedes C-Class C63 \u0026amp; C63 S (W205) Saloon 4.0 Bi-Turbo V8 (Non-GPF Equipped Models Only). It replaces the factory downpipe with a larger-bore pipe and removes the catalytic converter entirely, clearing the single most restrictive point in the exhaust for the biggest flow gain available at this position in the system. It's usually fitted alongside a Stage 2 remap, since the ECU needs to be told to expect the different readings the lambda sensors give once the cat's gone.\u003c\/p\u003e\n\u003cp\u003eIt's built for owners already committed to a serious power upgrade rather than a casual bolt-on, so pair it with the matching Milltek cat-back system for the full effect.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the cat, it's intended for off-road and competition use. A de-catted car will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large-bore Downpipes and Cat Bypass Pipes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 2.5 to 3 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eRemoves the factory catalyst for maximum flow (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eMercedes C-Class C63 \u0026amp; C63 S (W205) Saloon 4.0 Bi-Turbo V8 (Non-GPF Equipped Models Only) (2015 onwards)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Mercedes C-Class C63 AMG, which needs the \u003ca href=\"\/products\/milltek-secondary-catalyst-bypass-mercedes-c-class-c63-amg-07-11\"\u003eMilltek Secondary Catalyst Bypass Mercedes C-Class C63 AMG 07-11\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 2.5 to 3 hours. Before ordering, note: Replaces OE Primary and Secondary Cats, Requires Gearbox Removal for Fitting - Fits with OE Cat Back. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-active-valve-control-mercedes-c-class-c63-s-w205-saloon-4-0-bi-turbo-v8-non-gpf-15\"\u003eMilltek Active Valve Control Mercedes C-Class C63 \u0026amp; C63 S W205 Saloon 4.0 Bi-Turbo V8 Non-GPF 15+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-rear-silencers-mercedes-c-class-c63-s-w205-saloon-4-0-bi-turbo-v8-non-gpf-15\"\u003eMilltek Rear Silencers Mercedes C-Class C63 \u0026amp; C63 S W205 Saloon 4.0 Bi-Turbo V8 Non-GPF 15+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Mercedes C-Class C63 AMG?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-secondary-catalyst-bypass-mercedes-c-class-c63-amg-07-11\"\u003eMilltek Secondary Catalyst Bypass Mercedes C-Class C63 AMG 07-11\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the catalyst means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists it for use with the factory (OE) exhaust system.\u003c\/p\u003e\n\u003ch3\u003eWill removing the cat cause a warning light?\u003c\/h3\u003e\n\u003cp\u003eWithout suitable software it is likely to, as the ECU expects the readings a working catalyst gives. This is why Milltek pairs it with a remap.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 2.5 to 3 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392881406337,"sku":"MIL-SSXMZ119","price":1962.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXMZ119_1.jpg?v=1791893680","url":"https:\/\/milltekexhaustshop.com\/products\/milltek-downpipes-with-cat-bypass-mercedes-c-class-c63-s-w205-saloon-4-0-bi-turbo-v8-non-gpf-15","provider":"Milltek Exhaust Shop","version":"1.0","type":"link"}