Valved Exhaust System for Audi RS Q8 4M 4.0 TFSI V8 (2021-2024)
Configuration
Audi RS Q8 4M 4.0 TFSI V8 Valved Exhaust System (2021-2024)
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 Audi RS Q8 4M exhaust in detail.
A 600 hp, 800 Nm coupé SUV: the RS Q8 4M receives the 4.0 TFSI, a twin-turbo V8 with its turbos housed in the vee, and this page covers its 2021 to 2024 model years. Our data names the RS Q8 and it alone; the SQ8, mentioned without confirmation, is not covered. The Q8 55 TFSI, with a turbo V6, is covered on another page.
Despite these figures, the factory RS Q8 stays muted: a central-turbo layout and cruising silencers keep the V8 hushed. Open the valves of this valved cat-back: the V8 rumbles from idle, drives its pick-up with authority and crackles loudly when you lift off. With the valves closed, the SUV becomes a grand tourer again, able to swallow a day of motorway without fatigue.
No welding to install the RS Q8 system: clamps, gaskets and about two hours on a lift are enough. The drive modes continue to control the factory valves; the Rog remote, whose box sits in the boot, is the other option.
The page also lists the “Manifold” option, which here means the two downpipes under the turbos, catalytic converters included. A 600 hp SUV that also carries children is best kept on 200-cell, with emissions control retained; the 100-cell versions are accepted or not depending on the vehicle and your country’s rules, while the decat version is reserved for track use. Without a reworked map, the 600 hp stays the same: you gain sound and a little weight saving. Between 304 stainless steel and titanium, the latter saves around 40% in weight and comes in brushed, gold or purple.
Audi RS Q8 4M 4.0 TFSI V8 exhaust specifications.
| System type | Valved cat-back (valve exhaust), built to your VIN |
|---|---|
| Vehicle and chassis code | Audi RS Q8 4M (SQ8 not covered) |
| Engine | 4.0 TFSI, twin-turbo V8, 600 hp and 800 Nm |
| Years | 2021-2024 |
| Materials and finishes | 304 stainless steel or titanium; titanium in brushed, gold or purple |
| Valves | Factory control through the drive modes, or the Rog remote |
| Front section (option) | Downpipes with 200-cell or 100-cell catalytic converters, or decat |
| Fitting | Clamps and gaskets, no welding, about 2 hours on a lift |
| Manufacturing and delivery | Made to order, 20 working days, free delivery |
| Warranty | 3 years, parts and workmanship |
Questions about the Audi RS Q8 4M 4.0 TFSI V8 exhaust.
Does the SQ8 share the RS Q8 system?
Not on the basis of this page: it only confirms the RS Q8. If you drive an SQ8, send us the VIN and we will check what exists before any order.
And an RS Q8 from 2021 or 2024?
The page covers the 2021 to 2024 model years, the range common to the cat-back and the downpipes in our data. An RS Q8 from another model year is checked case by case, using the VIN, before any manufacturing.
Remapped RS Q8: which figures are published?
The cat-back alone works with the factory engine management. The downpipes, once combined with a new map at an approved tuning centre, take the V8 to the 730 hp and 980 Nm published on the page.
What do I need to know about vehicle inspection for an RS Q8 with a valved exhaust?
With the valves closed, the V8 returns to a level close to that on delivery. Nothing changes for emissions control as long as the SUV keeps the cat-back alone or the 200-cell downpipes. 100-cell downpipes will be accepted or not depending on the vehicle and your country’s rules; without a catalytic converter, the RS Q8 should only run on a circuit.
Audi RS Q8 4M 4.0 TFSI V8: 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.
Audi RS Q8 4M 4.0 TFSI V8: 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
Audi RS Q8: giving the 4.0 TFSI V8 its voice back, the complete guide
The RS Q8 shares its mechanicals with the Urus for around half the price: 600 hp of twin-turbo V8 in Ingolstadt's most prestigious SUV. Where the Urus embraces its voice, the RS Q8 whispers, held back by the OPF. Our...
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.
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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.
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