Porsche 911 GT3 type 992.1: the flat-six born for the track, the exhaust system guide
The 911 GT3 type 992.1 is built around a 4.0-litre, 510 hp naturally aspirated flat-six derived from motorsport, which draws its power from revs rather than forced induction. Built from 2021 to 2023, it is intended as much for the road as for the track. Its factory exhaust, heavier than the ROG exhaust, nevertheless holds back part of this character. This guide sets out the choices that will let you configure a ROG exhaust worthy of your GT3.
Written by ROG Motorsport · Updated
Your ROG exhaust for the Porsche 911 GT3 type 992.1
From €5,490 in stainless steel, €6,490 in titanium
Configure my exhaust- Vehicles
- Porsche 911 GT3 4.0 type 992.1 (2021-2023)
- Engine
- 510 hp · 470 Nm
- Exhaust
- Valved cat-back, built for your VIN
- Material
- 304 stainless steel or titanium
- Front section
- Optional: catted manifolds 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: Porsche 911 Carrera 3.0 type 992.1, Porsche 911 GT3 RS 4.0 type 992.1, Porsche 911 Turbo S 3.8 type 992.1, Porsche 718 Boxster / Cayman 2.0 turbo type 982.
The naturally aspirated 4.0-litre: the racing flat-six of the 911 GT3 type 992.1
The engine in the GT3 type 992.1 is a 4.0-litre non-turbo flat-six, derived directly from the engines Porsche runs in competition. It produces 510 hp and 470 Nm, and it is at the top of the rev counter that it delivers most of its power. Every climb through the revs feels like one continuous surge, with an instant response to the slightest touch of the pedal.
On a naturally aspirated engine of this calibre, the exhaust affects both the breathing and the way you perceive the climb through the revs. The valved ROG exhaust replaces a heavier factory exhaust, located behind the engine, where every kilogram counts for the balance of the 911. With the valves open, the flat-six sings without restraint; with the valves closed, the GT3 remains usable every day, with no changes to the engine or the ECU.
How the exhaust on your Porsche 911 GT3 type 992.1 is put together
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 Porsche 911 GT3 type 992.1, from the outlet of the front section to the tips: pipes, silencer, valves. This is where our research and development is focused, and it is what shapes the sound. On its own, it changes the character of the car.
The front section, where the catalytic converter sits
On your Porsche 911 GT3 type 992.1, these are the manifolds, which collect the gases as they leave the cylinders. The factory catalytic converter is built into it: the second restriction in the exhaust, after the silencer. Replacing this part is optional: it frees up the flow, and an ECU remap is what turns that into power.
Your Porsche 911 GT3 type 992.1 in figures
On a modern car, an exhaust system first changes the voice, the breathing and the weight at the rear. Power, on the other hand, comes from an ECU remap.
Power
Torque
Published manufacturer and Stage 2 figures.
Our exhaust systems work perfectly with or without an ECU remap. On your Porsche 911 GT3 type 992.1, however, we recommend one at an approved tuning centre: it is what lets the engine deliver its full potential.
On a naturally aspirated flat-six that is already highly honed, a Stage 2 remap can only offer modest gains, focused on response and top-end reach. The ROG exhaust complements it: it lets the engine breathe and lets you hear its whole climb through the revs, right up to the redline.
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 Porsche 911 GT3 type 992.1, the exhaust costs €5,490 in stainless steel and €6,490 in titanium.
304 stainless steel
5 490 €
- Weight
- Baseline
- Sound
- Full and rounded
The benchmark for high-end exhausts: tough, corrosion-proof, with a full, rounded sound. The choice of most of our customers.
Titanium
6 490 €
- Weight
- Around 40% lighter
- Sound
- Metallic, crystal-clear
Around 40% lighter than stainless steel for the same design, with a more metallic sound that turns crystal-clear at high revs. Its finish ranges from brushed to blued tints.
Over time, both hold up: 304 stainless steel stands up to winter salt and damp, and titanium does not rust. Stainless steel or titanium: what really changes.
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Step 2 of 3: Front section: manifolds and catalytic converter
Optional: the manifolds on your Porsche 911 GT3 type 992.1, with their catalytic converter. Sound intensity is rated on our scale of 0 to 10, valves open; the factory exhaust scores 3.
Cat-back only
Included
7/10Factory emissions control
The factory catalytic converter stays in place. The starting point and, for many of our customers, more than enough.
200-cell sports catalytic converter
+1 670 €
8/10Road use and French MOT
Emissions control is still very much there, and flow improves noticeably. The choice for everyday driving.
100-cell sports catalytic converter
+1 670 €
9/10French MOT pass not guaranteed
Half as many cells: flow comes close to a decat and the sound gains real aggression at high revs.
Decat
+1 120 €
10/10Track use only
No emissions control: maximum flow, raw sound, the sharpest revving.
Sound intensity, on a scale of 0 to 10
- 10/10Decat manifolds + 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? A sports catalytic converter can trigger it: the oxygen sensor after the catalytic converter detects less cleaning than with the factory unit. It is not a fault. An ECU remap recalibrates the sensor, and a session with a diagnostic tool clears the fault code. With a decat, the warning light is almost certain without a remap. If it happens to you, call us and we will point you in the right direction. Passing the French MOT with a sports exhaust.
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Step 3 of 3: Valves: ROG remote or factory control
Two ways to control the valves on your Porsche 911 GT3 type 992.1.
ROG remote
A small control unit fits in the boot. Two buttons, open and closed: the valves respond at any moment, whatever the drive mode. Simple to fit, and we stay on hand throughout the installation.
Factory control
- Only for vehicles fitted with factory valves
- Controlled by the drive modes
If your vehicle is fitted with factory valves, the exhaust keeps their existing control. The drive modes decide, just as they did from the factory, with no added electronics.
On the motorway, with the valves closed, the gases pass through the silencer, designed for cruising: no drone at a steady speed. You open up when you feel like it, not when the motorway decides for you. More about exhaust drone.
The ROG sound signature on the flat-six of the GT3 type 992.1
The GT3's flat-six has a racing voice: husky and mechanical at low revs, then increasingly high-pitched and sharp as the revs rise, up to a metallic howl that is entirely its own. The factory exhaust lets part of this range through, but it rounds off its rough edges.
With the ROG exhaust and the valves open, every climb through the revs becomes crisp and clean, from the growl at start-up to the scream at the redline. With the valves closed, the GT3 becomes more discreet, for transfer runs, town driving and early-morning departures.
From order to fitting
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Configuration
You choose your exhaust and enter your VIN, found in box E of your registration certificate.
-
Check
We check compatibility with your VIN before manufacturing begins.
-
Manufacturing
Your exhaust is made to order, for your car.
-
Delivery
Free in Europe, insured to your door, tracked from dispatch.
-
Fitting
No welding or cutting: clamps and gaskets, around two hours on a lift.
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 on your Porsche 911 GT3 type 992.1? In Europe, a manufacturer cannot refuse warranty cover simply because a part from another brand has been fitted: it has to prove that the fault comes from that part. Our article on the manufacturer's warranty.
Our recommendations for your Porsche 911 GT3 type 992.1
-
Daily driving
5 490 €
- Stainless
- Cat-back only
- ROG remote
Your Porsche 911 GT3 type 992.1 stays easy to live with, the factory emissions control is retained, and you open the valves when you decide.
View this configuration -
Fast road
8 160 €
- Titanium
- 200-cell manifolds
- ECU remap
More sound, more breathing, and a car you can still present at the French MOT.
View this configuration -
Track
7 610 €
- Titanium
- Decat manifolds
- Stage 2
The most extreme configuration, for track use only.
View this configuration
And if you are still unsure, that is perfectly normal: it is exactly why we answer the phone.
Porsche 911 GT3 type 992.1: your questions
How much power does an exhaust add on the Porsche 911 GT3 type 992.1?
As standard, the Porsche 911 GT3 type 992.1 produces 510 hp and 470 Nm. An exhaust system on its own mainly changes the sound, the breathing and the weight; power is gained with an ECU remap. With a Stage 2 build, the published figures reach 561 hp and 525 Nm.
Stainless steel or titanium: which material for the Porsche 911 GT3 type 992.1?
For the Porsche 911 GT3 type 992.1, the ROG exhaust costs €5,490 in stainless steel and €6,490 in titanium. 304 stainless steel is tough, rounded in tone and the most popular choice; titanium is around 40% lighter for the same design, with a more metallic sound at high revs.
Do you need to replace the catalytic converter on the Porsche 911 GT3 type 992.1?
No. On the Porsche 911 GT3 type 992.1, the cat-back alone carries the valves and already transforms the sound. Replacing the manifolds is an option for going further: with a 200-cell sports catalytic converter for the road, 100-cell or decat for more radical use, with an ECU remap to turn it into power.
Does the Porsche 911 GT3 type 992.1 pass the French MOT with a ROG exhaust?
With the cat-back only or the 200-cell sports catalytic converter, emissions control is retained: present the car with the valves closed. The 100-cell converter no longer guarantees a pass, and the decat fails the emissions test.
How is the ROG exhaust fitted on the Porsche 911 GT3 type 992.1?
No welding or cutting, using clamps and gaskets. Allow two hours on average for a well-equipped mechanic. The exhaust is built for your VIN, which guarantees compatibility before it ships.
What price and lead time for a ROG exhaust on the Porsche 911 GT3 type 992.1?
From €5,490 to €8,160 depending on the configuration. Allow 20 working days from order confirmation to delivery. Free delivery in Europe and 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 use your Porsche 911 GT3 type 992.1. 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.
RogMotorsport is a French brand built on one conviction: with an exhaust system, the support matters as much as the product. More than 500 exhaust systems fitted and a rating of 4.9 out of 5.
Further reading
- All Porsche exhaust systems
- Porsche 911 Carrera 3.0 type 992.1
- Porsche 911 GT3 RS 4.0 type 992.1
- Porsche 911 Turbo S 3.8 type 992.1
- Exhaust diameter: bigger does not mean more powerful
- Passing the French MOT with a sports exhaust
- Stainless steel or titanium: what really changes
- The 22 brands we cover
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