Mercedes C 63 AMG W204: bringing out the naturally aspirated 6.2, the complete guide
The C 63 W204 is already a cult car: the naturally aspirated 6.2 in a compact saloon, a recipe that will never return. Its value is rising, and every well-maintained example is an investment. On this car, the exhaust decides everything: it is the instrument of the 6.2. Here you will find everything that matters before configuring the exhaust for your Mercedes-AMG C63 W204 saloon V8 M156: catalytic converter, material, valves, tips and vehicle inspection.
Written by RogMotorsport · Updated
Your ROG exhaust for the Mercedes-AMG C63 W204 saloon V8 M156
From €2,290 in stainless steel, €2,790 in titanium
Configure my exhaust- Vehicles
- Mercedes-AMG C63 W204 saloon 6.2 V8 M156 (2011-2015)
- Engine
- M156 · 457 to 487 hp · 600 Nm, depending on the version
- Exhaust
- Valved cat-back, built for your VIN
- Material
- 304 stainless steel or titanium
- Front section
- Optional: catted front pipes with 200 or 100 cells, or decat
- 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-AMG C63 / C63 S W205 4.0 V8 biturbo, Mercedes-AMG ML63 W164 6.2 V8.
The AMG naturally aspirated 6.2: one of the greatest V8s in history
The naturally aspirated 6.2 in your C 63 AMG W204 is unanimously regarded as one of the greatest V8s ever built: the first engine developed entirely by AMG, screaming beyond 7,000 rpm with a NASCAR sound approved for the road. Its value, and that of the cars that carry it, keeps rising. The factory exhaust is decent, but it holds back part of the spectrum, precisely at high revs where this engine becomes legendary.
On a naturally aspirated engine of this calibre, the exhaust is the instrument. The ROG exhaust unleashes the 6.2 completely, with valves to spare your neighbours on early-morning starts.
What makes up the exhaust on your Mercedes-AMG C63 W204 saloon V8 M156
An exhaust system is best understood in two parts. Here is what each one does, and what ROG replaces.
The cat-back is the complete exhaust system
It is everything you can see under your Mercedes-AMG C63 W204 saloon V8 M156, from the outlet of the front section to the tips: pipes, silencer, valves. This is the part where most of our research and development goes: it is what shapes the sound, and it is enough on its own to transform the car.
The front section, where the catalytic converter sits
On your Mercedes-AMG C63 W204 saloon V8 M156, it is the front pipes, just after the manifolds. They contain the factory catalytic converter: the second restriction in the exhaust, after the silencer. Replacing it is optional: it frees up the flow, and it is the ECU remap that turns that into horsepower.
Your Mercedes-AMG C63 W204 saloon V8 M156 in figures
An exhaust system is judged first by ear and on the scales. The extra horsepower comes from an ECU remap.
Power
Torque
Published factory and Stage 2 figures. Factory figures vary by version; Stage 2 figures published for the 487 hp version.
The ROG exhaust works with or without an ECU remap. To get the full potential out of your Mercedes-AMG C63 W204 saloon V8 M156, we advise taking it to an approved tuning centre afterwards.
Let's be honest, it is our trademark: on a naturally aspirated engine, there are no massive gains to be had from the exhaust. The 6.2 breathes better with the exhaust, then gains precision with an ECU remap. What the figures do not show is what matters most: the response, the pull through the revs, and a transfigured sound. You do not tune an M156 for lap times, but for the experience.
Configuring your exhaust, step by step
4 choices, in the same order as the product page configurator.
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Step 1 of 4: Material: stainless steel or titanium
For your Mercedes-AMG C63 W204 saloon V8 M156, the exhaust costs €2,290 in stainless steel and €2,790 in titanium.
304 stainless steel
€2,290
- Weight
- Baseline
- Sound
- Full and rounded
The safe bet: strong, corrosion-proof, with a full, rounded sound. The best value for money.
Titanium
€2,790
- Weight
- Around 40% lighter
- Sound
- Metallic, crystal-clear
It makes the exhaust around 40% lighter for the same design. Its note is more metallic and clearer higher up the rev range, and its finish ranges from brushed to blued.
No worries on durability: 304 stainless steel shrugs off winter road salt and titanium does not rust. Stainless steel or titanium: what really changes.
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Step 2 of 4: Front section: front pipes and catalytic converter
Optional: the front pipes on your Mercedes-AMG C63 W204 saloon V8 M156, with their catalytic converter. Each option is placed on our sound scale of 0 to 10, valves open, with the factory exhaust at 3.
Cat-back only
Included
7/10Factory emissions control
The factory front section stays in place. It is already a complete transformation, and the choice of many of our customers.
200-cell sports catalytic converter
+€910
8/10Road use and inspection
More flow, emissions control retained: the right option for road use.
100-cell sports catalytic converter
+€910
9/10Inspection: depends on local rules
More open than the 200-cell: the sound hardens at high revs and emissions control is reduced.
Decat
+€590
10/10Track use
Flow with no filter at all: the rawest sound and the sharpest response.
Sound intensity, on a scale of 0 to 10
- 10/10Decat front pipes + ROG cat-back
- 9/10100-cell sports catalytic converter + ROG cat-back
- 8/10200-cell sports catalytic converter + ROG cat-back
- 7/10ROG cat-back only, factory catalytic converter retained
- 3/10Factory exhaust, for comparison
Valves open. With the valves closed, every configuration becomes discreet again.
What about the engine warning light? With a sports catalytic converter it can come on, because the rear oxygen sensor reads less cleaning. Nothing mechanical is wrong: an ECU remap or a session with a diagnostic tool sorts it out. Without a catalytic converter, you will need an ECU remap. If it happens to you, call us and we will point you in the right direction. Passing vehicle inspection with a sports exhaust.
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Step 3 of 4: Valves: ROG remote or factory control
Two ways to control the valves on your Mercedes-AMG C63 W204 saloon V8 M156.
ROG remote
A discreet control unit in the boot and a two-button remote: you open and close whenever you like, independently of the drive modes. For fitting, we support you by phone or by email.
Factory control
- Only for vehicles fitted with factory valves
- Controlled by the drive modes
For vehicles fitted with factory valves: the exhaust connects to their control and the drive modes stay in charge, with no extra control unit.
At 130 km/h, many sports exhausts drone. Here, with the valves closed, the exhaust flows through the silencer and stays composed when cruising; open, it makes itself heard when you choose. More about exhaust drone.
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Step 4 of 4: Tips: the visual signature
Match the tips to the style of your Mercedes-AMG C63 W204 saloon V8 M156, 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 naturally aspirated 6.2
The 6.2 builds its song through the revs: deep and menacing below 4,000, then angrier and angrier all the way to the red line, with that unique NASCAR tone. Our exhaust reduces back pressure and lets that crescendo out in full. Valves closed, the car stays usable every day without becoming tiring.
From order to fitting
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Configuration
You configure the exhaust and enter the VIN from box E of your registration document or from the base of the windscreen.
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Check
Your VIN is checked before any manufacturing begins.
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Manufacturing
The exhaust is produced to order, for your vehicle.
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Delivery
Free in Europe, insured parcel, tracking number from dispatch.
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Fitting
Around two hours in the workshop, with no welding or cutting.
20 working days from order confirmation to delivery
- Warranty
- 3 years, parts and workmanship, from the date of purchase
- Payment
- In instalments with Klarna
- Installation
- At the garage of your choice
Is your Mercedes-AMG C63 W204 saloon V8 M156 still under the manufacturer's warranty? In Europe, the manufacturer cannot refuse cover simply because a part from another brand has been fitted: it is up to the manufacturer to prove that the fault comes from that part. Our article on the manufacturer's warranty.
Our recommendations for your Mercedes-AMG C63 W204 saloon V8 M156
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Daily driving
€2,290
- Stainless
- Cat-back only
- ROG remote
Your Mercedes-AMG C63 W204 saloon V8 M156 stays easy to live with, the factory emissions control is retained, and you open the valves whenever you decide.
View this configuration -
Fast road
€3,700
- Titanium
- 200-cell front pipes
- ECU remap
The best of both worlds: character and breathing, with emissions control retained.
View this configuration -
Track
€3,380
- Titanium
- Decat front pipes
- Stage 2
The most extreme configuration, for track use only.
View this configuration
Every Mercedes-AMG C63 W204 saloon V8 M156 has its own story and its own use: if none of these profiles sounds like you, let's talk.
Mercedes-AMG C63 W204 saloon V8 M156: your questions
How much power does an exhaust add on the Mercedes-AMG C63 W204 saloon V8 M156?
As standard, the Mercedes-AMG C63 W204 saloon V8 M156 produces 457 to 487 hp and 600 Nm, depending on the version. The exhaust alone acts first on sound, breathing and weight; the extra horsepower comes from an ECU remap. With a Stage 2 build, the published figures for the 487 hp version reach 536 hp and 672 Nm.
Stainless steel or titanium: which material for the Mercedes-AMG C63 W204 saloon V8 M156?
For the Mercedes-AMG C63 W204 saloon V8 M156, the ROG exhaust costs €2,290 in stainless steel and €2,790 in titanium. Stainless steel is the safe bet, with a full sound; titanium makes the exhaust around 40% lighter and gives a more metallic note higher up the rev range.
Do you need to replace the catalytic converter on the Mercedes-AMG C63 W204 saloon V8 M156?
It is not compulsory. The cat-back alone is enough to change the character of the Mercedes-AMG C63 W204 saloon V8 M156. Replacing the front pipes is how you go further, together with an ECU remap: 200 cells for the road, 100 cells or decat for more radical use.
Will a ROG exhaust pass vehicle inspection on the Mercedes-AMG C63 W204 saloon V8 M156?
The cat-back only and the 200-cell converter both retain emissions control: present the Mercedes-AMG C63 W204 saloon V8 M156 with the valves closed. With the 100-cell, acceptance at the emissions test depends on the car and local rules; the decat is intended for track use.
How is the ROG exhaust fitted on the Mercedes-AMG C63 W204 saloon V8 M156?
With clamps and gaskets, no welding or cutting: around two hours in the workshop for a well-equipped mechanic. The exhaust is built to the VIN of your Mercedes-AMG C63 W204 saloon V8 M156.
What price and lead time for a ROG exhaust on the Mercedes-AMG C63 W204 saloon V8 M156?
From €2,290 to €3,700 depending on the configuration. Allow 20 working days from order confirmation to delivery. Delivery is free and the exhaust comes with a 3-year warranty.
Unsure about your configuration? Give us a call.
Stainless steel or titanium, cat-back only or the complete system: the right choice depends on how you drive and on your Mercedes-AMG C63 W204 saloon V8 M156. 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.
ROG is a French brand, and the way we work comes down to one idea: an exhaust system should be sold with advice, not just a product page. More than 500 exhaust systems fitted and a rating of 4.9 out of 5.
Further reading
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