{"product_id":"mercedes-amg-c43-w205-m276-downpipes","title":"Mercedes-AMG C43 W205 Catless, 200-Cell \u0026 400-Cell Downpipes — M276 3.0T BiTurbo V6 | 2016–2021 | YPG Motorsport","description":"\u003ch2\u003eMercedes-AMG C43 W205 Downpipes — Catless, 200-Cell \u0026amp; 400-Cell | M276 3.0L BiTurbo V6 | 2016–2021\u003c\/h2\u003e\n\n\u003cp\u003eYPG Motorsport downpipes for the Mercedes-AMG C43 (W205) replace the restrictive factory catalytic converters on the M276 3.0L BiTurbo V6 with mandrel-bent 304 stainless steel pipes. The factory cats sit directly behind the turbochargers in the hot-vee — the single biggest restriction in the exhaust path. Removing them unlocks faster spool, sharper throttle response, reduced exhaust gas temperatures, and a significantly more aggressive V6 exhaust note with pronounced turbo whistle on spool.\u003c\/p\u003e\n\n\u003ch3\u003eCatless vs 200-Cell vs 400-Cell — Which to Choose?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eFlow\u003c\/th\u003e\n\u003cth\u003eSound\u003c\/th\u003e\n\u003cth\u003eEmissions\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCatless\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMaximum — zero restriction\u003c\/td\u003e\n\u003ctd\u003eLoudest, raw turbo bark\u003c\/td\u003e\n\u003ctd\u003eNo catalytic conversion\u003c\/td\u003e\n\u003ctd\u003eTrack builds, maximum power, off-road use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e200-Cell High-Flow Catted\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVery high — minimal restriction\u003c\/td\u003e\n\u003ctd\u003eAggressive with less interior resonance\u003c\/td\u003e\n\u003ctd\u003eReduced emissions vs catless\u003c\/td\u003e\n\u003ctd\u003eStreet\/track balance, spirited daily driving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e400-Cell GESI Catted\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh flow — OEM+ level\u003c\/td\u003e\n\u003ctd\u003eEnhanced over stock, refined\u003c\/td\u003e\n\u003ctd\u003eNear-OEM emissions compliance\u003c\/td\u003e\n\u003ctd\u003eDaily drivers wanting performance + compliance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePower Gains with Stage 2 ECU Calibration\u003c\/h3\u003e\n\u003cp\u003eWhen paired with a \u003ca href=\"\/products\/mercedes-benz-c43-m276-m156-ecu-calibration\"\u003eYPG Stage 2 ECU calibration\u003c\/a\u003e, the C43 delivers approximately \u003cstrong\u003e440–460 HP and 500–520 lb-ft of torque\u003c\/strong\u003e — a gain of +70–80 HP over the stock 385 HP. The M276 responds immediately to reduced backpressure. For the full Stage 2 experience, we recommend downpipes + ECU tune as a package — the tune is required to eliminate the CEL and unlock the additional timing and boost the engine can safely handle.\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2016–2021 Mercedes-AMG C43 Sedan (W205)\u003c\/li\u003e\n\u003cli\u003e2016–2021 Mercedes-AMG C43 Estate (S205)\u003c\/li\u003e\n\u003cli\u003e2016–2021 Mercedes-AMG C43 Coupé (C205)\u003c\/li\u003e\n\u003cli\u003e2016–2021 Mercedes-AMG C43 Cabriolet (A205)\u003c\/li\u003e\n\u003cli\u003eM276 3.0L BiTurbo V6 — all variants (385 HP \/ 520 Nm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Low-carbon 304 stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e TIG welded, hand finished\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlanges:\u003c\/strong\u003e CNC-machined 304 stainless — laser-cut OEM mounting points\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Direct OEM replacement — bolt-on, no fabrication required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in Germany\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Lifetime\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1× pair stainless steel downpipes (catless, 200-cell, or 400-cell per selection)\u003c\/li\u003e\n\u003cli\u003eAll necessary bolts, gaskets, and clamps\u003c\/li\u003e\n\u003cli\u003eOEM-style mount points for factory exhaust retention\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eProfessional installation recommended. Requires vehicle lift access. Installation time is approximately 2–3 hours. A Stage 2 ECU calibration is required to eliminate the CEL and unlock the full performance potential. YPG Motorsport offers remote ECU flashing worldwide — OBD2 tool shipped to your door, guided session, 30–45 minutes, fully reversible to stock.\u003c\/p\u003e\n\n\u003ch3\u003eWhy YPG Motorsport\u003c\/h3\u003e\n\u003cp\u003eSince 2011, YPG Motorsport has been tuning and building Mercedes-AMG engines across the M276, M177, M178, M157, and M156 families — including the world record sub-10-second W205 C63 quarter mile (9.97s \/ 828 WHP, Beech Bend Raceway Park, Kentucky, April 9, 2019). We know the W205 platform inside and out. Ships worldwide with free delivery. GCC stock available for same-week dispatch to Kuwait, Saudi Arabia, UAE, Qatar, Bahrain, and Oman.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eHow much HP do C43 downpipes add?\u003c\/h4\u003e\n\u003cp\u003eDownpipes alone add approximately 15–25 HP by reducing backpressure. The real gains come from pairing them with a Stage 2 ECU tune — combined, you'll see 440–460 HP total, a gain of +70–80 HP over stock.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need a tune with C43 downpipes?\u003c\/h4\u003e\n\u003cp\u003eA Stage 2 ECU calibration is required to eliminate the check engine light and unlock the full power gains. Without a tune, you'll still see some improvement in throttle response and sound, but the CEL will remain.\u003c\/p\u003e\n\n\u003ch4\u003eWill C43 downpipes fit the E43, GLC43, and C450?\u003c\/h4\u003e\n\u003cp\u003eAll M276 BiTurbo V6 models share the same engine architecture, but downpipe fitment varies by chassis. We offer dedicated downpipes for each: \u003ca href=\"\/products\/mercedes-benz-w213-e43-2018-catless-downpipes\"\u003eE43\u003c\/a\u003e, \u003ca href=\"\/products\/mercedes-benz-w205-glc43-2018-catless-downpipes\"\u003eGLC43\u003c\/a\u003e, and \u003ca href=\"\/products\/copy-of-mercedes-benz-w205-c450-catless-downpipes\"\u003eC450\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch4\u003eWhat's the difference between catless and 200-cell?\u003c\/h4\u003e\n\u003cp\u003eCatless removes the catalytic converter entirely for maximum flow and power. 200-cell high-flow cats retain some catalytic conversion while still flowing significantly more than the factory 600+ cell units. Choose catless for track builds, 200-cell for aggressive street use, or 400-cell GESI for maximum compliance.\u003c\/p\u003e\n\n\u003ch4\u003eHow long does installation take?\u003c\/h4\u003e\n\u003cp\u003eApproximately 2–3 hours with proper lift access. The downpipes bolt directly to the factory mounting points with no fabrication or cutting required.\u003c\/p\u003e\n\n\u003ch4\u003eAre YPG downpipes covered by warranty?\u003c\/h4\u003e\n\u003cp\u003eAll YPG Motorsport downpipes carry a lifetime warranty against manufacturing defects.\u003c\/p\u003e","brand":"YPG Motorsport","offers":[{"title":"Catless","offer_id":16776076329024,"sku":"YPG-C43-W205-DP","price":1099.0,"currency_code":"USD","in_stock":true},{"title":"200-Cell High-Flow Catted","offer_id":48871977812160,"sku":"YPG-C43-W205-DP-200CELL","price":2099.0,"currency_code":"USD","in_stock":true},{"title":"400-Cell GESI High-Flow Catted","offer_id":48871977844928,"sku":"YPG-C43-W205-DP-400CELL","price":2699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0084\/7288\/7360\/files\/dp_clean_c43.png?v=1788758522","url":"https:\/\/ypgmotorsport.com\/products\/mercedes-amg-c43-w205-m276-downpipes","provider":"YPG Motorsport","version":"1.0","type":"link"}