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The Akrapovic CO-AU/T/5 Titanium Link Pipe Set is the required companion piece for the Akrapovic Evolution Line (S-AU/T/3H) exhaust system on the 2025 Audi RS Q8 (4M chassis). The CO-AU/T/5 is split from the main exhaust assembly due to packaging requirements and must be ordered alongside the S-AU/T/3H to complete the installation. Built from the same high-grade titanium alloy used throughout the Evolution Line family, these link pipes integrate directly with the RS Q8's 4.0L twin-turbo V8 exhaust routing, contributing to the system's total 6.7 kg weight reduction over the OEM assembly. The CO-AU/T/5 is designed for 2025 Audi RS Q8 4M models equipped with the factory OPF or GPF particulate filter and is not compatible as a standalone upgrade without the S-AU/T/3H main system.
This Part Fits
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2025 | Audi | RS Q8 | RS Q8 |
| 2025 | Audi | RS Q8 | RS Q8 Performance |
Specifications
| Detail | Value |
|---|---|
| MPN | CO-AU/T/5 |
| Brand | Akrapovic |
| System Type | Link Pipe Set (Titanium); mandatory companion to S-AU/T/3H |
| Primary Material | High-grade titanium |
| Total System Weight (with S-AU/T/3H) | 18.86 kg |
| Total System Weight Reduction | 6.7 kg vs. OEM |
| Compatible Chassis | Audi RS Q8 (4M) 2025 |
| Engine | 4.0L Twin-Turbo V8 |
| OPF/GPF Compatibility | Designed for OPF/GPF equipped RS Q8 4M models |
| Country of Origin | Slovenia |
| Warranty | Akrapovic manufacturer warranty |
What's Included
- Akrapovic CO-AU/T/5 titanium link pipe set
- All mounting clamps and hardware for link pipe integration
- Akrapovic installation instructions
- Note: must be ordered with S-AU/T/3H Evolution Line system for complete installation
Frequently Asked Questions
Is the CO-AU/T/5 a standalone exhaust upgrade for the 2025 RS Q8?No. The CO-AU/T/5 is a mandatory companion link pipe set and cannot be installed as a standalone upgrade. It must be ordered together with the Akrapovic Evolution Line Titanium system (S-AU/T/3H) to complete the exhaust installation on the 2025 Audi RS Q8 4M.
Why does the Akrapovic Evolution Line system for the RS Q8 require two separate part numbers?Akrapovic splits the CO-AU/T/5 from the main S-AU/T/3H assembly due to packaging and shipping constraints specific to the RS Q8 4M platform. Both parts must be present for a complete and functional installation. This is normal for this exhaust system and both parts ship separately.
Does the CO-AU/T/5 fit the 2025 RS Q8 Performance variant as well as the standard RS Q8?Yes. The CO-AU/T/5 is designed for the Audi RS Q8 4M chassis, which underpins both the standard RS Q8 and the RS Q8 Performance for model year 2025. Both variants use the same 4.0L twin-turbo V8 platform and share the same exhaust architecture.
How much weight does the Akrapovic Evolution Line system remove from the RS Q8?The complete system including the CO-AU/T/5 link pipes and the S-AU/T/3H main assembly weighs 18.86 kg total, compared to the heavier OEM system, for a total reduction of 6.7 kg. This contributes to improved weight distribution and rear-end agility.
Is the CO-AU/T/5 compatible with RS Q8 models that do not have an OPF or GPF filter?The CO-AU/T/5 and the companion S-AU/T/3H Evolution Line system are specifically engineered for the 2025 Audi RS Q8 4M equipped with the OPF or GPF particulate filter. Compatibility with earlier or non-OPF RS Q8 variants should be confirmed with Akrapovic or Black Ops Auto Works before ordering.
Can I install the CO-AU/T/5 link pipes myself?While the system is designed as a bolt-on installation without cutting or welding, the precision required for proper routing and alignment on the RS Q8 4M platform, combined with the system's value, makes professional installation at an experienced Audi or performance exhaust shop strongly recommended.
Does this product come with a warranty?Yes. Akrapovic covers the CO-AU/T/5 under the standard Akrapovic manufacturer warranty. Contact Black Ops Auto Works for full warranty terms and registration instructions.
What exhaust note does the RS Q8 produce with the full Akrapovic Evolution Line system installed?The complete Evolution Line installation including the CO-AU/T/5 link pipes produces a deeper, more resonant exhaust note across the full rpm range of the 4.0L V8. The sound profile is sportier and more aggressive than stock without producing cabin drone at highway speeds, and becomes substantially more assertive under hard acceleration.
Installation Overview
- Confirm both CO-AU/T/5 and S-AU/T/3H parts are on hand before beginning
- Lift the RS Q8 safely and support on appropriate stands or a lift
- Allow the factory exhaust system to cool completely before starting work
- Remove the OEM link pipe assembly from the catalytic converter outlets and rear muffler connection points
- Disconnect factory rubber hanger isolators and remove OEM muffler and link pipes from the vehicle
- Position the Akrapovic CO-AU/T/5 link pipes and route per the installation instructions for the RS Q8 4M
- Connect the CO-AU/T/5 to the S-AU/T/3H main exhaust assembly and hang on factory rubber isolators
- Install all Akrapovic clamps hand-tight and verify positioning before final torque
- Torque all clamps to Akrapovic specification and verify no exhaust leaks at idle and under load
WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
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