Valved Exhaust System for Mercedes-AMG GLB35 X247 2.0 turbo 4MATIC (2020-2021)
Configuration
Mercedes-AMG GLB35 X247 4MATIC Valved Exhaust System (2020-2021)
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 GLB35 X247 exhaust in detail.
The GLB35 X247 is the AMG version of the GLB family SUV: a 2.0-litre turbo reworked to reach 306 hp and 400 Nm, combined with 4MATIC all-wheel drive, which puts the power down even on wet roads. The page is for the 2020 and 2021 GLB35; the GLB250, on the same body, has a separate system.
The 2.0 AMG has a hoarse, eager sound, punctuated by dry accents on gear changes. In the factory GLB35, only a smoothed-out version remains, far below what the badge on the tailgate suggests. The Rog valved cat-back, also known as a valve exhaust, gives it back a frank presence at start-up and a fuller note under acceleration; closed, it leaves the SUV its discretion for the big holiday getaways.
Made to your VIN, the exhaust takes about two hours to fit: clamps, gaskets, no welding on the body. The valves follow the factory control if the car has one, or the Rog remote, which opens and closes whatever AMG mode is selected.
On this engine, the “Manifold” option replaces the catalysed downpipe, which restricts the flow just after the turbo. Taken with 200 cells, it leaves emissions control intact; the 100-cell, accepted or not depending on the car and the rules in your country, and the decat version, reserved for track use, are aimed at uses other than family motoring. Without an ECU remap, the effect is on the sound. The choice of material remains open: 304 stainless steel for longevity, or titanium, around 40% lighter, if every kilo counts even on an SUV.
Mercedes-AMG GLB35 X247 2.0 turbo 4MATIC exhaust specifications.
| System type | Valved cat-back (valve exhaust), built to your VIN |
|---|---|
| Vehicle and chassis code | Mercedes-AMG GLB35 X247 4MATIC SUV |
| Engine | 2.0-litre AMG turbocharged four-cylinder, 306 hp and 400 Nm, 4MATIC drive |
| Years | 2020-2021 |
| Materials and finishes | 304 stainless steel or titanium; titanium in brushed, gold or purple |
| Valves | Factory valve control or the Rog remote |
| Front section (option) | Downpipe with 200-cell or 100-cell catalytic converter, or decat |
| Fitting | No welding or cutting, 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 GLB35 X247 2.0 turbo 4MATIC exhaust.
Can a 2019 GLB35 X247 take this exhaust?
Our page covers the GLB35 X247 from 2020 to 2021; 2019 is not covered. Unsure of your car’s date? The VIN lets us decide before manufacturing. The GLB250 has its own page.
After fitting, does the GLB35 X247 need an ECU remap?
Not for the cat-back, which the electronic engine management accepts as it is. If you add the downpipe, an ECU remap turns it into power: the page publishes 370 hp and 510 Nm at Stage 2, against 306 hp and 400 Nm as standard.
Mercedes-AMG GLB35 X247 2.0 turbo 4MATIC with a Rog exhaust: what should you know about vehicle inspection?
Present it with the valves closed, with the cat-back alone or the 200-cell sports catalytic converter: emissions control is retained and the volume stays that of a standard SUV. The 100-cell depends on the vehicle and the country; in decat form, it belongs only on the track.
Why a valved system on a family SUV like the GLB35?
Because it leaves you the choice: valves closed for family journeys, in the factory calm; open when you drive alone, to finally hear the AMG four-cylinder.
Mercedes-AMG GLB35 X247 2.0 turbo 4MATIC: 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 GLB35 X247 4MATIC: the family AMG, the exhaust system guide
The GLB35 is one of the most practical AMGs: a boxy compact SUV designed for families, but fitted with a 306 hp turbocharged four-cylinder and 4MATIC all-wheel drive. Yet its standard exhaust, tuned for silence, cuts off its voice. This...
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.
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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.
-
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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