Valved Exhaust System for Mercedes-AMG CLS63 / CLS63 S C218 / X218 5.5 V8 biturbo (2013-2017)
Configuration
Mercedes-AMG CLS63 / CLS63 S C218 / X218 Valved Exhaust System (2013-2017)
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 CLS63 C218 / X218 exhaust in detail.
A four-door coupé with the look of a grand tourer, the CLS63 C218 hides a 5.5-litre direct-injection V8 with two turbos: 557 hp and 720 Nm in the CLS63, 585 hp and 800 Nm in the CLS63 S. The torque, enormous and available very low down, makes chasing revs pointless. This page covers the 2013 to 2017 model years; the naturally aspirated CLS W219 comes under another page.
Two turbos and an exhaust designed for comfort: the equation leaves little room for the V8, which you sense more than you hear. Yet its voice is deep and dense, with a rolling idle and an almost roaring climb. The Rog valved cat-back brings back that rumble at start-up and on downshifts; closed, it leaves the CLS as much at ease at a hotel entrance as on the motorway.
No welding: clamps, gaskets and about two hours of fitting for a system built to your VIN. Factory valves keep their control if the car has them; otherwise the two-button Rog remote takes over that role.
Here the “Manifold” option targets the catalysed front section that follows the turbos, a downpipe in tuners’ terms. The 200-cell keeps the gases treated, making it the natural choice for a road-going four-door coupé. The 100-cell, accepted or not depending on the car and the rules in your country, and the decat variant, reserved for track use, fall outside the scope of a grand tourer. An ECU remap is needed to get horsepower out of it. Finally, the material: 304 stainless steel, or titanium, with identical valves but around 40% lighter.
Mercedes-AMG CLS63 / CLS63 S C218 / X218 5.5 V8 biturbo exhaust specifications.
| System type | Valved cat-back (valve exhaust), built to your VIN |
|---|---|
| Vehicles and chassis codes | Mercedes-AMG CLS63 and CLS63 S C218 four-door coupé and X218 Shooting Brake |
| Engine | 5.5-litre twin-turbo V8, 557 hp / 720 Nm (CLS63) or 585 hp / 800 Nm (CLS63 S) |
| Years | 2013-2017 |
| 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) | Downpipe with 200-cell or 100-cell catalytic converter, or decat |
| 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 CLS63 / CLS63 S C218 / X218 5.5 V8 biturbo exhaust.
My CLS63 C218 dates from 2012: does the system on this page suit it?
Our page excludes 2011, 2012 and 2018: it covers the CLS63 and CLS63 S C218 from 2013 to 2017. For a car at the edge of the range, send the VIN and we check before manufacturing.
What does a Stage 2 ECU remap change on a CLS63 S C218 that already has 585 hp?
According to the table on the page, it reaches 710 hp and 1,100 Nm, provided the downpipe is fitted and the map is completely redone. With the cat-back alone, the CLS keeps its AMG map and its original 557 or 585 hp.
When it is time for vehicle inspection, which configuration do you recommend for a CLS63 C218?
Valves closed, with the factory front section or a 200-cell downpipe: the coupé keeps its catalytic converters active and a stock rumble. For the 100-cell, the answer will depend on the vehicle and your country’s rules. The decat downpipe is reserved for track use, which rules it out for a visit to the inspection centre.
Does the CLS63 C218 keep control of its factory valves?
If the car has them, the exhaust connects to them and operation stays as AMG intended. Without factory valves, or by preference, the Rog remote opens and closes them with a single gesture.
Does the CLS63 Shooting Brake X218 take the same system?
Yes. The C218 four-door coupé and the X218 Shooting Brake take the same Rog system: same chassis, same 5.5-litre twin-turbo V8, same clamp-and-gasket fitting. Your VIN is only used to confirm the version and model year before manufacturing.
Mercedes-AMG CLS63 / CLS63 S C218 / X218 5.5 V8 biturbo: 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 CLS63 / CLS63 S C218 / X218 V8 biturbo: AMG elegance, the exhaust system guide
The CLS63 C218 combines the silhouette of a coupé with the practicality of four doors, and houses a 557 hp 5.5 biturbo V8, even more in S form. That elegance long served as an excuse for a very restrained factory...
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.
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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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