Valved Exhaust System for Mercedes-AMG GLS63 X167 4.0 V8 biturbo (2020-2026)
Configuration
Mercedes-AMG GLS63 X167 Valved Exhaust System (2020-2026)
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 GLS63 X167 exhaust in detail.
The GLS63 X167 carries the AMG 4.0-litre twin-turbo V8, hand-assembled in Affalterbach, with turbos housed in the vee: 612 hp and 850 Nm to move this very large SUV. This page covers the 2020 to 2026 model years; the GLS63 X166 with the 5.5-litre V8 that preceded it has its own page.
The particulate filter and oversized silencers have made this V8 polite, to the point that many owners see it as a breach of the AMG spirit. The Rog cat-back fixes that: valves open, deep rumble and bangs on the overrun; valves closed, your GLS becomes a high-riding limousine again, silent for every passenger.
Not a single weld: clamps and gaskets are enough, in about two hours, for a system built to your VIN. The AMG modes keep control of the factory valves; failing that, the Rog remote.
The “Manifold” option offers the downpipe that follows the turbos. The 200-cell version keeps emissions control and remains the one for road use. The 100-cell, which will be accepted or not depending on the car and the rules in your country, and the decat version, reserved for track use, sit badly with an SUV of this size designed for travel. With a full ECU remap, the page quotes 704 hp and 1,050 Nm at Stage 2. As for material, 304 stainless steel is enough for most GLS owners; titanium, around 40% lighter, is chosen for its looks and clearer note.
Mercedes-AMG GLS63 X167 4.0 V8 biturbo exhaust specifications.
| System type | Valved cat-back (valve exhaust), built to your VIN |
|---|---|
| Vehicle and chassis code | Mercedes-AMG GLS63 X167 SUV |
| Engine | 4.0-litre twin-turbo V8, 612 hp and 850 Nm |
| Years | 2020-2026 |
| 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 GLS63 X167 4.0 V8 biturbo exhaust.
Can a GLS63 X167 built in late 2019 take this exhaust?
Our catalogue covers the GLS63 X167 from 2020 to 2026, with the 2019 model year still to be confirmed. For a late-2019 model, send us the VIN: we check before manufacturing.
With a downpipe and an ECU remap, what power can the GLS63 X167 reach according to the page?
It rises to 704 hp and 1,050 Nm, from 612 hp and 850 Nm, with downpipe and full ECU remap by an approved tuner. The rear system on its own works with the factory electronic management.
How should a modified GLS63 X167 be taken to vehicle inspection?
Valves closed, with the factory front section or a 200-cell downpipe: the SUV stays hushed and its exhaust gases are treated. Fitted with a 100-cell downpipe, this large SUV will be accepted or not depending on the vehicle and your country’s rules, to be checked before the appointment. The decat version is reserved for track use and stays outside this process.
Does a modified GLS63 X167 stay quiet for rear passengers?
Yes, with the valves closed: the V8 becomes a distant murmur again and the long-distance comfort is preserved. You alone choose the moment the thunder returns.
Mercedes-AMG GLS63 X167 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 GLS 63 AMG X167: giving the AMG V8 its thunder back, the complete guide
The GLS 63 X167 is the ocean liner of the AMG range: seven seats, 612 hp and an overwhelming presence. And a V8 muzzled by the OPF, completely at odds with the car's sheer size. Our exhaust system gives it...
In detail
Rog Advisor
A question about this exhaust?
Fitment, sound, catalyst, valves, delivery: the answer comes straight away, with your configuration in context.
The Rog Advisor is an automated assistant trained on our product pages and answers. For an important decision, write to us: we confirm by e-mail.
Unsure about your configuration? Talk to us before you order. We know your car. Write to us at contact@rogmotorsport.com: we reply in writing, in English, within 24 hours. Email us
Reviews imported from our previous system and translated from French; verified purchases carry the badge.
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.
-
Finishing
Material, elevated.
The finish reveals the character of the metal. Stainless steel or titanium, depending on the options available for your vehicle.
-
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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