{"product_id":"mercedes-amg-gt-gts-gtr-m178-downpipes","title":"Mercedes-AMG GT \/ GTS \/ GTR Catless, 200-Cell \u0026 400-Cell Downpipes — M178 4.0T | YPG Motorsport","description":"\u003ch2\u003eMercedes-Benz AMG GT \/ GTC \/ GTS \/ GTR \/ GTR Pro Catless Downpipes — M178 4.0L Twin-Turbo V8\u003c\/h2\u003e\n\u003cp\u003eYPG Motorsport catless downpipes for the Mercedes-AMG GT family replace the factory catalytic converters with full 3.5-inch mandrel-bent stainless steel pipes. The M178 dry-sump V8 responds immediately — faster spool, sharper throttle response, reduced exhaust gas temperatures, and the raw, aggressive V8 note the GT was engineered to deliver.\u003c\/p\u003e\n\n\u003cp\u003eWhen paired with a Stage 2 ECU calibration, power gains depend on variant: the AMG GT S moves from 522 HP to \u003cstrong\u003e650+ HP\u003c\/strong\u003e, and the GTR pushes well past \u003cstrong\u003e700 HP\u003c\/strong\u003e. For Stage 3+ turbo builds on the M178, downpipes are a mandatory prerequisite — the factory cats are the single biggest restriction in the exhaust path.\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMercedes-AMG GT (C190 \/ R190) — 462 HP base\u003c\/li\u003e\n\u003cli\u003eMercedes-AMG GT S — 522 HP\u003c\/li\u003e\n\u003cli\u003eMercedes-AMG GT C — 550 HP\u003c\/li\u003e\n\u003cli\u003eMercedes-AMG GT R — 577 HP\u003c\/li\u003e\n\u003cli\u003eMercedes-AMG GT R Pro — 577 HP\u003c\/li\u003e\n\u003cli\u003eM178 4.0L Twin-Turbo V8 (dry sump) — all model years\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 3.5 inches — full mandrel bent\u003c\/li\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 catless downpipes\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 depending on model variant. 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\u003eYPG Motorsport has been building and tuning AMG engines since 2011. The M178 shares its core architecture with the M177 — the same engine family we used to set the world record for the first sub-10-second W205 C63 quarter mile. We know this 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","brand":"YPG Motorsport","offers":[{"title":"Catless","offer_id":16776093794368,"sku":"YPG-AMGGT-M178-DP","price":1999.99,"currency_code":"USD","in_stock":true},{"title":"200-Cell High-Flow Catted","offer_id":48870362677440,"sku":"YPG-AMGGT-M178-DP-200CELL","price":2999.99,"currency_code":"USD","in_stock":true},{"title":"400-Cell GESI High-Flow Catted","offer_id":48871901626560,"sku":"YPG-AMGGT-M178-DP-400CELL","price":3599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0084\/7288\/7360\/files\/clean_amg_gt.png?v=1788757042","url":"https:\/\/ypgmotorsport.com\/products\/mercedes-amg-gt-gts-gtr-m178-downpipes","provider":"YPG Motorsport","version":"1.0","type":"link"}