Mercedes-AMG G65 W463: twelve cylinders for the G-Class, the exhaust system guide
The G65 sits at the top of the G-Class range: an off-roader whose silhouette has barely changed in decades, powered by a 6.0-litre biturbo V12. With 612 hp and 1,000 Nm of torque, it moves its bulk with unreal ease. But the factory exhaust is designed so that you do not hear these twelve cylinders. Finally giving them a voice is the role of the ROG exhaust, and this guide details each of its options.
Written by ROG Motorsport · Updated
Your ROG exhaust for the Mercedes-AMG G65 W463 V12 biturbo
From €5,490 in stainless steel, €6,490 in titanium
Configure my exhaust- Vehicles
- Mercedes-AMG G65 W463 6.0 V12 biturbo
- Engine
- M279 · 612 to 630 hp · 1000 Nm, depending on the version
- Exhaust
- Valved cat-back, built for your VIN
- Material
- 304 stainless steel or titanium
- Valves
- ROG remote, or factory control if your vehicle has it
- Lead time
- 20 working days from order confirmation to delivery
- Warranty
- 3 years, parts and workmanship
Closely related versions have their own guide: Mercedes-Benz G500 / G550 W463 4.0 V8 biturbo, Mercedes-AMG G63 W463 5.5 V8 biturbo.
The M279 V12: twelve biturbo cylinders under the G65's square bonnet
The G65 W463 carries the M279, a 6.0-litre biturbo V12 from AMG. It is rated at 612 hp and 1,000 Nm of torque, a rare figure, available from low revs. In a body-on-frame, four-wheel-drive off-roader, this power translates into acceleration that defies the vehicle's silhouette and disconcerting ease of driving in any situation.
On an engine of this calibre, the exhaust decides what you perceive of the mechanicals. The factory one on the G65 is designed so that the V12 goes almost unnoticed, a paradox on such a demonstrative vehicle. With the ROG valved exhaust, fitted without any engine modification, you are free to reveal the twelve cylinders or keep the cabin calm.
How the exhaust on your Mercedes-AMG G65 W463 V12 biturbo is put together
Here is what the ROG exhaust replaces, and where the sound is shaped.
The cat-back is the complete exhaust system
It is everything you can see under your Mercedes-AMG G65 W463 V12 biturbo, all the way to the tips: pipes, silencers, valves. Routing, silencer, valves: this is where the sound is shaped. The engine and the ECU stay as they left the factory.
The figures for your Mercedes-AMG G65 W463 V12 biturbo
What an exhaust changes straight away is the sound, the engine's breathing and the weight at the rear. For more power, add an ECU remap.
Power
Torque
Published factory and Stage 2 figures. Factory figures vary by version; Stage 2 figures published for the 630 hp version.
With or without an ECU remap, the exhaust fits and works. But it is an ECU remap at an approved tuning centre that truly unlocks your Mercedes-AMG G65 W463 V12 biturbo, and that is what we recommend.
With its two turbos and already considerable torque, the M279 keeps some headroom in reserve that a Stage 2 remap can tap into. On such an engine, the transmission and the overall condition of the vehicle also set the limits, and the result depends on the quality of the tuning work. The ROG exhaust supports this kind of project by giving the V12 a voice worthy of it.
Configuring your exhaust, step by step
3 choices, in the same order as the product page configurator.
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Step 1 of 3: Material: stainless steel or titanium
For your Mercedes-AMG G65 W463 V12 biturbo, the exhaust costs €5,490 in stainless steel and €6,490 in titanium.
304 stainless steel
5 490 €
- Weight
- Baseline
- Sound
- Full and rounded
Durable, corrosion-resistant, with a rounded, full sound: the most popular option.
Titanium
6 490 €
- Weight
- Around 40% lighter
- Sound
- Metallic, crystal-clear
For the same design, it weighs around 40% less than stainless steel. A more metallic note at high revs and a look all of its own, from brushed to blued.
Both materials age well: 304 stainless steel copes with winter and salt, and titanium does not rust. Stainless steel or titanium: what really changes.
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Step 2 of 3: Valves: ROG remote or factory control
Two ways to control the valves on your Mercedes-AMG G65 W463 V12 biturbo.
ROG remote
The simplest solution: a control unit in the boot and a remote, open or closed at the press of a button, whatever mode you are in. A question while fitting? We will get back to you.
Factory control
- Only for vehicles fitted with factory valves
- Controlled by the drive modes
Does your vehicle have factory valves? The exhaust keeps their existing control: the drive modes operate the valves, as before, with no added electronics.
On a long journey, what matters is the absence of drone at a steady speed. With the valves closed, the exhaust keeps the cabin calm; the show is still there whenever you ask for it. More about exhaust drone.
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Step 3 of 3: Tips: the visual signature
Match the tips to the style of your Mercedes-AMG G65 W463 V12 biturbo, understated or bold. A particular finish in mind? Send us a photo and we will look at it together.
- Stainless steel
- Black
- Carbon
- Blued titanium
The ROG sound signature on the G65's V12
AMG's biturbo V12 has a dense, velvety voice, in which the twelve cylinders blend into a continuous, deep rumble that grows richer under load. In the G65, the factory exhaust reduces it to a distant whisper, well short of what the vehicle's stature leads you to expect.
For ordinary journeys, closing the valves leaves the G65 with the serenity of a large luxury off-roader, in town and on the motorway alike. With the valves open, the V12 takes centre stage: a start-up that turns heads, a smooth, massive rumble under acceleration, and a striking contrast between the rugged off-roader silhouette and the refinement of twelve cylinders.
From order to fitting
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Configuration
You choose the options for your Mercedes-AMG G65 W463 V12 biturbo and enter its VIN, from box E of the registration certificate.
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Check
We confirm compatibility with your car before we build it.
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Manufacturing
Made to order, for your Mercedes-AMG G65 W463 V12 biturbo.
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Delivery
Free, insured delivery, with tracking sent on dispatch.
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Fitting
Clamps and gaskets, no welding: two hours on average at the garage of your choice.
20 working days from order confirmation to delivery
- Warranty
- 3 years, parts and workmanship, from the date of delivery
- Payment
- In instalments with Klarna
- Installation
- At the garage of your choice
What about the manufacturer's warranty? In Europe, fitting a part from another brand is not enough on its own to void it; the manufacturer has to prove the link between that part and the fault. Our article on the manufacturer's warranty.
Our recommendations for your Mercedes-AMG G65 W463 V12 biturbo
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Daily driving
5 490 €
- Stainless
- ROG remote
The best balance of price, sound and comfort.
View this configuration -
Enthusiast
6 490 €
- Titanium
A lighter exhaust, with a more metallic note at high revs.
View this configuration -
Style
6 490 €
- Titanium
- Blued titanium or black tips
An exhaust is seen as much as it is heard.
View this configuration
These profiles are starting points. The right choice is often made in five minutes on the phone.
Mercedes-AMG G65 W463 V12 biturbo: your questions
How much power does an exhaust system add to the Mercedes-AMG G65 W463 V12 biturbo?
As standard, the Mercedes-AMG G65 W463 V12 biturbo produces from 612 to 630 hp and 1000 Nm, depending on the version. Without a remap, the exhaust transforms the voice and lightens the rear; it is the ECU remap that increases power. With a Stage 2 build, the published figures for the 630 hp version reach 750 hp and 1185 Nm.
Stainless steel or titanium: which material for the Mercedes-AMG G65 W463 V12 biturbo?
For the Mercedes-AMG G65 W463 V12 biturbo, the ROG exhaust costs €5,490 in stainless steel and €6,490 in titanium. Choose stainless steel for value for money and a rounded sound, titanium to save around 40% in weight and get a clearer tone.
Is the ROG exhaust loud all the time on the Mercedes-AMG G65 W463 V12 biturbo?
Never against your will: with the valves closed, the Mercedes-AMG G65 W463 V12 biturbo keeps a composed sound; with them open, it speaks freely, at the touch of a button.
Will the Mercedes-AMG G65 W463 V12 biturbo pass the French MOT with a ROG exhaust?
On the Mercedes-AMG G65 W463 V12 biturbo, the ROG exhaust touches neither the engine nor the ECU. For the test, close the valves: it is the most discreet setting.
How is the ROG exhaust fitted to the Mercedes-AMG G65 W463 V12 biturbo?
Fitting needs no welding or cutting and takes two hours on average on a lift. We check compatibility with the VIN of your Mercedes-AMG G65 W463 V12 biturbo before manufacturing.
What does a ROG exhaust cost for the Mercedes-AMG G65 W463 V12 biturbo, and how long does it take?
From €5,490 to €6,490 depending on the configuration. Allow 20 working days from order confirmation to delivery. Free delivery in Europe, 3-year warranty.
Unsure about your configuration? Give us a call.
Stainless steel or titanium, ROG remote or factory control: the right choice depends on how you drive and on your Mercedes-AMG G65 W463 V12 biturbo. We take the time to talk it through before you order, with a reply within 24 hours. We are not here to sell to you over the phone: we help you choose, even if that means a cheaper option because it suits the way you drive.
Behind every ROG exhaust is a French team you can actually reach, who know the cars they talk about. More than 500 exhaust systems fitted and a rating of 4.9 out of 5.
Further reading
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