Mercedes GT63/GT63S AMG Catless Downpipes 2019-2023 (M177 X290) | WSTN Performance

Give your X290 GT63 the downpipe setup its M177 deserves. These WSTN Performance catless downpipes are made for the Mercedes-AMG GT63 and GT63S 4-Door Coupé. They replace the factory downpipe section for a more direct exhaust path after the twin turbos. It is a serious upgrade for drivers chasing a harder exhaust note and the performance potential available when the downpipes are paired with a suitable tune. Why Upgrade? ✓ No restrictions – 100% unrestricted for maximum flow and response ✓ Built to handle heat – stainless steel with OEM-style heat shielding ✓ More power, faster spool – Reduces backpressure for better throttle and turbo response ✓ Mandrel-bent piping – Smooth transitions ensure optimal flow and performance ✓ Precision-built – CNC flanges and leak-free fitment ✓ Bolt-on installation – No cutting or welding required ✓ Built to premium-brand specifications – Manufactured to the same engineering standards as top performance brands you know. ✓ 1-Year Warranty – Peace of mind backed by performance Key Features & Specs Configuration: Catless downpipe set Engine: M177 4.0L twin-turbo V8 Heat shielding: Integrated heat shielding Fitment & Compatibility ✓ Mercedes-AMG GT63 (X290) / 2019-2023 / M177 4.0L twin-turbo V8 ✓ Mercedes-AMG GT63S (X290) / 2019-2023 / M177 4.0L twin-turbo V8 Check it fits your car Use the fitment selector on this page to confirm your exact make, model, and year before ordering. Select the option that matches your car. Not sure? Email us your VIN, make and model and we'll confirm fitment. What's In the Box ✓ 1 x WSTN Performance Mercedes-AMG GT63/GT63S catless downpipe set Installation Professional installation is recommended. Send your VIN before purchase if you would like the fitment checked against your vehicle. Technical Note: This catless downpipe set is intended for track and competition use. It may affect emissions equipment, warning lights and road legality. Check local requirements before purchase. Heat Shielding ✓ Cooler engine bay: The shield blocks radiant heat coming off the pipe, so the bay around the downpipe runs cooler than it would with bare stainless. ✓ Less heat soak: Hoses, wiring, sensors and intake components sitting near the exhaust run take on less heat. ✓ Easier on heat-sensitive parts: Less constant heat exposure on nearby rubber and plastic parts, which helps them hold up over time. ✓ Factory approach: The same principle used on factory exhaust systems, a barrier between hot metal and the rest of the bay. ✓ Heat stays in the pipe: Keeping heat in the exhaust stream instead of radiating it out supports flow through the pipe. Why WSTN Performance? A downpipe should be matched to the exact car, not guessed from the engine name. The car or VIN you enter comes through with your order, and we check fitment before anything ships. Warranty / Shipping DISCLAIMER WSTN Performance components are designed for track and competition use. To protect your build and ensure a perfect finish, we recommend professional installation by a certified specialist/workshop. It is the buyer's responsibility to ensure modifications comply with local regulations. WARRANTY We stand behind every product we sell. All WSTN Performance products carry a 1 year WSTN Performance warranty as standard. This covers any manufacturing defects, giving you total peace of mind that your upgrade is built to last. View our full Warranty policy page here. SHIPPING We offer tracked worldwide shipping on our entire catalogue. Lead times are shown on the product page and every order is personally dispatched once complete. View our full Shipping policy page here. RETURNS We offer returns on all products if items are damaged or there is something wrong. If we ever make a mistake, we'll cover the return shipping to make it right. View our full Return policy page here. SUPPORT Need a hand with fitment, shipping, or a return? Our Perth-based team is here to help you get your build perfect. Email: contact@wstnperformance.com Sound clip Coming soon.