Mercedes-AMG SL63 R231 V8 biturbo: the V8 in the open air, the exhaust guide
The Mercedes-AMG SL63 R231 combines two pleasures: that of a roadster with a retractable hard top and that of a 5.5-litre twin-turbo V8, delivering 537 hp and 800 Nm as standard. With the roof down, you are as close to the engine as you can get, but the factory exhaust was designed to mask its sound. From material to tips, every choice for the ROG exhaust is explained here, to finally give the V8 its place in the experience.
Written by ROG Motorsport · Updated
Your ROG exhaust for Mercedes-AMG SL63 R231 V8 biturbo
From €3,390 in stainless steel, €4,140 in titanium
Configure my exhaust- Vehicles
- Mercedes-AMG SL63 R231 5.5 V8 biturbo (2013-2020)
- Engine
- M157 · 537 to 585 hp · 800 to 900 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-AMG G63 W463 5.5 V8 biturbo.
The M157 twin-turbo V8: the commanding power of the SL63 R231
The M157 is a 5.5-litre V8 boosted by two turbos, fitted to the AMG 63 models of its generation. In the SL63 R231, it delivers 537 hp and 800 Nm of torque available across a very wide range, pushing the roadster along with disconcerting ease. Rear-wheel drive and the retractable roof make the SL63 a grand tourer capable of truly sporting acceleration.
On a roadster, you experience the exhaust more directly than in any saloon: with the roof down, it is the first thing you hear. The SL63's factory exhaust was calibrated for discretion, and it holds back the V8's expression. The ROG valved exhaust replaces it with a system you control, and lets you decide when the M157 makes itself heard.
What makes up the exhaust on your Mercedes-AMG SL63 R231 V8 biturbo
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 SL63 R231 V8 biturbo, all the way to the tips: pipes, silencer, valves. Routing, silencer, valves: this is where the sound is shaped. The engine and the ECU stay as they left the factory.
Your Mercedes-AMG SL63 R231 V8 biturbo in figures
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 585 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 SL63 R231 V8 biturbo, and that is what we recommend.
With two turbos and generous displacement, the M157 keeps a reserve of power and torque that a Stage 2 remap can tap into, in the hands of a tuner who knows this engine well. The end result varies from one car to another. The ROG exhaust is a natural fit for this kind of project.
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 SL63 R231 V8 biturbo, the exhaust costs €3,390 in stainless steel and €4,140 in titanium.
304 stainless steel
3 390 €
- Weight
- Baseline
- Sound
- Full and rounded
Durable, corrosion-resistant, with a rounded, full sound: the most popular option.
Titanium
4 140 €
- 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 SL63 R231 V8 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 SL63 R231 V8 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 M157 V8 of the SL63
The M157 has the deep, powerful voice of the great AMG V8s, with a rumble that rolls at idle and surges under acceleration. On the standard SL63, even with the roof down, this voice stays filtered, and you hear more of the wind than of the engine.
With the valves open, the ROG exhaust puts the V8 in the spotlight: every acceleration is enjoyed in the open air, every downshift gains depth. With the valves closed, the SL63 regains the discretion of a grand tourer, for long stints or late returns home.
From order to fitting
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Configuration
You choose the options for your Mercedes-AMG SL63 R231 V8 biturbo and enter its VIN, found in 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 SL63 R231 V8 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 SL63 R231 V8 biturbo
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Daily driving
3 390 €
- Stainless
- ROG remote
The best balance of price, sound and comfort.
View this configuration -
Enthusiast
4 140 €
- Titanium
A lighter exhaust, with a more metallic note at high revs.
View this configuration -
Style
4 140 €
- 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 SL63 R231 V8 biturbo: your questions
How much power does an exhaust add on the Mercedes-AMG SL63 R231 V8 biturbo?
As standard, the Mercedes-AMG SL63 R231 V8 biturbo produces 537 to 585 hp and 800 to 900 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 585 hp version reach 693 hp and 1208 Nm.
Stainless steel or titanium: which material for the Mercedes-AMG SL63 R231 V8 biturbo?
For the Mercedes-AMG SL63 R231 V8 biturbo, the ROG exhaust costs €3,390 in stainless steel and €4,140 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 SL63 R231 V8 biturbo?
Never against your will: with the valves closed, the Mercedes-AMG SL63 R231 V8 biturbo keeps a composed sound; with the valves open, it speaks freely, at the press of a button.
Can the Mercedes-AMG SL63 R231 V8 biturbo pass the French MOT with a ROG exhaust?
On the Mercedes-AMG SL63 R231 V8 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 on the Mercedes-AMG SL63 R231 V8 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 SL63 R231 V8 biturbo before manufacturing.
What price and lead time for a ROG exhaust on the Mercedes-AMG SL63 R231 V8 biturbo?
From €3,390 to €4,140 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 SL63 R231 V8 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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