Valved Exhaust System for Mercedes-AMG GT63 / GT63 S X290 4.0 V8 biturbo (2019-2025)
Configuration
Mercedes-AMG GT63 / GT63 S X290 Valved Exhaust System (2019-2025)
Valves
Operated by remote control, factory-paired.
Estimated at 0.50 m from the outlet, 45°, 2,000 rpm with a warm engine. Allow ± 2 dB depending on the engine and measuring point. A 3 dB difference is audible in a direct comparison; 10 dB sounds roughly twice as loud.
Configuration guide
Sound intensity with the valves open, on a scale of 0 to 10.
| Configuration | Intensity |
|---|---|
| Decat downpipe + Rog cat-back | 10/10 |
| 100-cell sports catalytic converter + Rog cat-back | 9/10 |
| 200-cell sports catalytic converter + Rog cat-back | 8/10 |
| Rog cat-back only, factory catalytic converter retained | 7/10 |
| Factory exhaust, for comparison | 3/10 |
The Mercedes-AMG GT63 X290 exhaust in detail.
A four-door that covers 0 to 100 km/h in 3.2 seconds and reaches 315 km/h as a GT63 S: the AMG GT X290 hides a sports car. Its M177, a 4.0-litre twin-turbo V8 with its turbos housed in the vee, hand-built in Affalterbach, delivers 585 hp and 800 Nm as a GT63, 639 hp and 900 Nm as a GT63 S. The MCT 9G gearbox with multi-plate clutch and variable 4MATIC+ complete the package.
To the ear, however, the car remains almost polite: on recent model years, a particulate filter and oversized silencers smooth everything out. On a four-door, the contrast is even stronger when the thunder returns, because nothing in the silhouette prepares you for what comes out at the back. The Rog cat-back, valves open, restores it; valves closed, the X290 becomes the long-distance saloon it knows how to be again.
This page covers the 2019 to 2025 GT63 and GT63 S X290; the GT63 C192 coupé, on a different platform, has its own page. Fitted with clamps and gaskets, no welding, about two hours; system built to your VIN; valves controlled by the AMG modes or by the Rog remote.
On this four-door, the “Manifold” option actually refers to the catalysed downpipe placed just after the M177’s two turbos. Chosen in 200-cell form, it keeps emissions control and remains compatible with road use. If you are considering the 100-cell version, its acceptance will depend on the car and the rules in your country. As for the decat variant, reserved for track use, it falls outside the scope of a registered saloon. With a completely redone map, the page lists a Stage 2 of 820 hp and 1,100 Nm for both versions. Titanium, around 40% lighter than 304 stainless steel, lightens the rear of the four-door.
Mercedes-AMG GT63 / GT63 S X290 4.0 V8 biturbo exhaust specifications.
| System type | Valved cat-back (valve exhaust), built to your VIN |
|---|---|
| Vehicles and chassis code | Mercedes-AMG GT63 and GT63 S X290, four-door |
| Engine | M177, 4.0-litre twin-turbo V8, 585 hp / 800 Nm (GT63) or 639 hp / 900 Nm (GT63 S) |
| Years | 2019-2025 |
| Materials and finishes | 304 stainless steel or titanium; titanium in brushed, gold or purple |
| Valves | Factory AMG modes or the Rog remote |
| Front section (option) | Downpipe with 200-cell or 100-cell catalytic converter, or decat |
| Fitting | Clamps and gaskets, no welding, about 2 hours |
| Manufacturing and delivery | Made to order, 20 working days, free delivery |
| Warranty | 3 years, parts and workmanship |
Questions about the Mercedes-AMG GT63 / GT63 S X290 4.0 V8 biturbo exhaust.
Does the four-door GT63 X290 system fit the GT63 C192 coupé?
No: the C192 is based on another platform, shared with the SL R232, and has its own page, with no front section offered. This one targets the 2019 to 2025 GT63 and GT63 S X290; the VIN confirms your version before manufacturing.
What power does a GT63 S X290 reach at Stage 2?
According to our data, 820 hp and 1,100 Nm with downpipe and full ECU remap, against 639 hp and 900 Nm stock; the same figure is published for the 585 hp GT63. The cat-back on its own needs no ECU remap whatsoever.
Which configuration should be kept on a GT63 X290 for the vehicle inspection?
The cat-back alone or the 200-cell downpipe, valves closed: the four-door stays at a standard volume and its exhaust gases are treated. On a GT63 X290, a 100-cell setup will be accepted or not depending on the vehicle and your country’s rules, hence the value of checking beforehand. As for the decat version, reserved for track use, it has no place at a test centre.
Does the GT63 X290 fitted with the system stay comfortable for long trips?
Yes: with the valves shut, the silencer absorbs the flow and the four-door keeps its grand tourer hush on the motorway. The V8’s voice only returns when you choose.
Mercedes-AMG GT63 / GT63 S X290 4.0 V8 biturbo: Does a valved exhaust system drone?
No. With the valves closed, the gases flow through the whole rear silencer and the cabin stays calm at a steady speed. Our Rog exhausts are designed to avoid drone. Learn more: Why our systems stay calm on the motorway.
Rog expert guide
Mercedes AMG GT 63 X290: the unfiltered V8 M177, the complete exhaust system guide
A 900 Nm four-door that goes from 0 to 100 km/h in 3.2 seconds: the GT 63 S 4-Door is a family car in silhouette only. Its M177 V8 is the same hand-built engine as in the AMG coupés, and...
In detail
Rog Advisor
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Rog presentation film: choosing your vehicle, Standard or Equal Length design, stainless steel or titanium, Z-Pipe, controlled valves, titanium and tip finishes, and support from choosing your configuration through to shipping.
THE Rog CRAFT
Our process.
From the first bend to the last check. The same care at every step.
-
Design
Designed for your vehicle.
Geometry matched to your model, carefully studied bends and precise mounting points. Everything starts with accurate design.
-
Manufacture
Crafted with precision.
Tube bending, part fitting and TIG welding: every joint receives the same care.
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Finishing
Material, elevated.
The finish reveals the character of the metal. Stainless steel or titanium, depending on the options available for your vehicle.
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Assembly
Every part in its place.
Components are assembled and adjusted. On valved systems, the mechanism is fitted, set up and tested.
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Inspection
Check. Then approve.
Geometry, welds, connections and gas flow: the key points are inspected before shipping.
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Shipping
Ready to join you.
Reinforced packaging protects your exhaust in transit. The final step before giving your vehicle a new voice.
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