Valved Exhaust System for Mercedes-AMG C63 W204 / S204 / C204 6.2 V8 M156 (2011-2015)
Configuration
Mercedes-AMG C63 W204 / S204 / C204 Valved Exhaust System (2011-2015)
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 front pipes + 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 |
Which valved exhaust for a Mercedes-AMG C63 W204, S204 or C204?
The Rog system for the Mercedes-AMG C63 W204 is a valved cat-back exhaust for the W204 saloon, S204 estate and C204 coupé, built to your VIN in 304 stainless steel or titanium for the naturally aspirated 6.2-litre M156 V8 (457 or 487 hp). With no turbo to filter the sound, the system is this V8's instrument: valves open, it roars to the redline; valves closed, it behaves.
Sound, options and fitting in detail: our Mercedes-AMG C63 W204 guide.
A 6.2-litre naturally aspirated V8 in a compact saloon: the C63 W204 recipe will not come back. The M156, the first engine developed entirely by AMG, revs beyond 7,000 rpm and delivers 457 hp, or 487 hp in Performance form, with 600 Nm. This page covers the W204 saloon, the S204 estate and the C204 coupé from 2011 to 2015; the twin-turbo V8 C63 W205 and the ML63 W164, which also receives a 6.2, have their own page.
With no turbo to filter anything, the exhaust is the 6.2’s instrument. Its song builds with the revs: deep and menacing below 4,000 rpm, increasingly furious up to the red line, with that American V8 tone you recognise from afar. The factory exhaust holds some of it back, precisely at the top. With the valves open, our valved cat-back unleashes that crescendo; with the valves closed, the saloon starts up without waking the street.
Made to your VIN, the system fits with clamps and gaskets, with no welding or cutting, in about two hours. Valve control through the factory system if your C63 has it, otherwise through the Rog remote.
Here, the “Manifold” option concerns the catalysed front section, at the outlet of the V8’s manifolds. On a naturally aspirated engine, its design matters: lengths and geometry affect cylinder filling at high revs, and the gain, real but modest, lies between 3 and 8% with an ECU remap. With a 200-cell converter, it leaves emissions control in place. With the 100-cell, acceptance depends on the car and the rules in your country, and the decat version, reserved for track use, has no place on a road-going saloon. For the cat-back, 304 stainless steel with a round tone, or titanium around 40% lighter, whose metal rings clearer as the V8 approaches the red line.
Mercedes-AMG C63 W204 / S204 / C204 6.2 V8 M156 exhaust specifications.
| System type | Valved cat-back (valve exhaust), built to your VIN |
|---|---|
| Vehicles and chassis codes | Mercedes-AMG C63 W204 saloon, S204 estate and C204 coupé (excluding the C 63 AMG Coupé Black Series) |
| Engine | M156, 6.2-litre naturally aspirated V8, 457 hp or 487 hp (Performance), 600 Nm |
| Power in kW | 336 to 358 kW |
| Years | 2011-2015 |
| Materials and finishes | 304 stainless steel or titanium; titanium in brushed, gold or purple |
| Valves | Factory valve control if the car has it, otherwise the Rog remote |
| Front section (option) | Front section with 200-cell or 100-cell catalytic converter, or decat, at the manifold outlets |
| 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 C63 W204 / S204 / C204 6.2 V8 M156 exhaust.
Can the C63 C204 coupé or the S204 estate take this system?
Yes. The W204 saloon, the S204 estate, built until 2014, and the C204 coupé take the same Rog system, with the same M156 V8 and the same clamp-and-gasket fitting. Only the C 63 AMG Coupé Black Series, with its own body and system, is not covered. Your VIN confirms the version before manufacturing.
Does an ECU remap make sense on the C63 W204’s M156?
On a naturally aspirated engine, gains remain measured: the page publishes 536 hp and 672 Nm at Stage 2, front section included. Fitted alone, the cat-back requires no change of map. You tune an M156 for response and top-end reach more than for lap times.
Is the front section worth it on a C63 W204?
More than on a turbo engine, because the geometry at the engine outlet affects cylinder filling at high revs. Expect 3 to 8% with an ECU remap. Without one, it is mainly the sound that changes.
How should a modified C63 W204 be presented at vehicle inspection?
With the valves closed, the V8 keeps a voice close to stock, and that is how it should be presented. With the cat-back alone or the 200-cell front section, the M156’s gases stay catalysed. The 100-cell depends on the car and the country; the decat version is reserved for track use.
Does the C63 W204’s cold start wake up the neighbourhood?
Not if you keep the valves closed: the 6.2 then wakes with a sound close to standard. You open them once you are out of the street, with a button on the Rog remote or via the factory control.
Mercedes-AMG C63 W204 / S204 / C204 6.2 V8 M156: 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.
Mercedes-AMG C63 W204 / S204 / C204 6.2 V8 M156: straight pipe or resonator?
On this model, two characters at the same price: the straight pipe for the raw sound of your engine, unfiltered, or the resonator for a rounder and slightly softer voice. Either way, the exhaust stays fully sporty. Learn more: Exhaust resonator: what does it do? Straight pipe or resonator, which sound to choose.
Rog expert guide
Best valved exhaust for Mercedes-AMG C63 W204, S204 and C204
For a W204-generation C63 AMG, as a saloon, estate or coupé, the best valved exhaust is the one made to your VIN, with a sound you choose, to let the 6.2 sing all the way to the red line. That...
In detail
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Design
Designed for your vehicle.
Geometry matched to your model, carefully studied bends and precise mounting points. Everything starts with accurate design.
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Manufacture
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Finishing
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The finish reveals the character of the metal. Stainless steel or titanium, depending on the options available for your vehicle.
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Assembly
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Components are assembled and adjusted. On valved systems, the mechanism is fitted, set up and tested.
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Inspection
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Geometry, welds, connections and gas flow: the key points are inspected before shipping.
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