Configuration
Porsche 911 GT3 992.1 4.0 Valved Exhaust (2021-2023)
Valves
Operated by remote control, paired in our workshop.
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 manifolds + 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 Porsche 911 GT3,992.1 exhaust in detail.
Gruff and mechanical at low revs, then increasingly sharp up to a metallic howl near the red line: the GT3’s flat-six has a racing voice. Its factory system lets part of it through but rounds off its edges, and weighs 17.05 kg according to our page. With the valves open, the Rog cat-back makes every climb through the revs frank and crisp; with them closed, the GT3 turns more discreet for transit runs and early morning departures.
The page is for the 992.1-type 911 GT3, produced from 2021 to 2023: a naturally aspirated 4.0-litre flat-six, derived from the engines raced in competition, with 510 hp and 470 Nm. The GT3 RS, the Carrera and the Turbo S of the same generation each have their own page; your VIN confirms compatibility before manufacturing.
Positioned behind the engine, where every kilo counts for the 911’s balance, the Rog system fits without welding, with clamps and gaskets, in about two hours. The factory valve control is retained if it exists; otherwise, the Rog remote decides, whatever the mode.
The manifolds, with integrated catalytic converter, appear on the GT3 page under the “Manifold” option. On this naturally aspirated 4.0-litre, their contribution is felt at the top of the rev counter and remains modest, 3 to 8%, with an ECU remap; the page lists 561 hp and 525 Nm in Stage 2, and the 200-cell version cleans emissions like the factory part. As for materials, 304 stainless steel or titanium, around 40% lighter for the same design, in brushed, chrome, gold or purple.
Porsche 911 GT3 4.0 type 992.1 exhaust specifications.
| System type | Valved cat-back (valve exhaust), built to your VIN |
|---|---|
| Vehicle and generation | Porsche 911 GT3 4.0, type 992.1 |
| Engine | 4.0-litre naturally aspirated flat-six, 510 hp and 470 Nm |
| Years | 2021-2023 |
| Materials and finishes | 304 stainless steel or titanium; titanium in brushed, chrome, gold or purple |
| Valves | Factory valve control if the car has it, otherwise the Rog remote |
| Front section (option) | Manifolds with 200-cell or 100-cell catalytic converters, 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 Porsche 911 GT3 4.0 type 992.1 exhaust.
My GT3,992.1 is a Touring: can I order this system?
The supplier source refers to the 992.1-type GT3 4.0 from 2021 to 2023 without distinguishing any variant. For a Touring, as for any car out of the ordinary, we read your VIN before starting manufacturing.
Sport manifolds and a new map: what does a GT3,992.1 gain?
Our page quotes 561 hp and 525 Nm at Stage 2 for the GT3, around fifty horsepower more than the stock 510 hp. The gain remains measured on a naturally aspirated engine; the cat-back alone, for its part, requires no ECU remap.
The GT3,992.1 is driven on track and on the road: which configuration for the vehicle inspection?
The road configuration: valves closed and factory or 200-cell manifolds, which keep emissions control. If the GT3 is fitted with 100-cell manifolds, they will be accepted or not depending on the vehicle and your country’s rules. The decat version, reserved for track use, has no place on that day.
How long does it take to receive a GT3,992.1 system?
Manufacturing is done to order, for your car: 20 working days separate confirmation from delivery, with free, insured delivery, followed by about two hours of fitting.
ROG expert guide
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...
In detail
Unsure about your configuration?
Talk to our workshop before you order. We know your car.
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.
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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.
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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.
Customer builds
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The ROG lines fitted on our customers' vehicles, in real conditions.
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The journal
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