Mercedes-AMG G65 W463: twelve cylinders for the G-Class, the exhaust system guide

The M279 V12: twelve biturbo cylinders under the G65's square hood

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 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.

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

2 choices, in the same order as the product page configurator.

1. 1

   Step 1 of 2: Material: stainless steel or titanium

   Titanium costs more than stainless steel; the price of each version is shown on the product page, in your currency.

   304 stainless steel

   Weight

   Baseline

   Sound

   Full and rounded

   Durable, corrosion-resistant, with a rounded, full sound: the most popular option.

   Titanium

   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.

2. 2

   Step 2 of 2: 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 trunk 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.

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 highway 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

1. Configuration

   You choose the options for your Mercedes-AMG G65 W463 V12 biturbo and enter its VIN, from box E of the registration document or the base of the windshield.

2. Check

   We confirm compatibility with your car before we build it.

3. Manufacturing

   Made to order, for your Mercedes-AMG G65 W463 V12 biturbo.

4. Delivery

   Free, insured delivery, with tracking sent on dispatch.

5. 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 purchase

Payment

Card, PayPal or bank transfer

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

• Daily driving

  • Stainless
  • Rog remote

  The best balance of price, sound and comfort.

  View this configuration

• Enthusiast

  • Titanium

  A lighter exhaust, with a more metallic note at high revs.

  View this configuration

• Style

  • Titanium

  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 a few messages.

Mercedes-AMG G65 W463 V12 biturbo: your questions

Further reading

• All Mercedes-AMG exhaust systems
• Mercedes-Benz G500 / G550 W463 4.0 V8 biturbo
• Mercedes-AMG G63 W463 5.5 V8 biturbo
• How to pass vehicle inspection with a modified exhaust
• Pop & Bang: how it works, and is it risky?
• Killing highway drone
• Stainless steel or titanium: what really changes
• The 28 brands we cover