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Titanium Evolution Cat-Back That Turns the Audi RS7 Sportback into a Symphony
The Akrapovic S-AU/TI/4H Evolution Line Cat-Back Exhaust is the definitive upgrade for the 2014-2017 Audi RS7 Sportback C7. Built entirely from aerospace-grade titanium and finished with four oversized carbon fiber tips, this system adds 16 hp and 20 Nm of torque while cutting 12.6 kg of exhaust weight. Akrapovic S-AU/TI/4H connects directly to the factory catalytic converters on the 4.0 TFSI bi-turbo V8 quattro engine, delivering a deep, valve-controlled motorsport soundtrack without any modification. Every Akrapovic S-AU/TI/4H is handcrafted in Slovenia and backed by a 3-year manufacturer warranty.
Key Features
- Full Titanium Construction — High-grade titanium tubing throughout the entire S-AU/TI/4H system resists heat, corrosion, and fatigue over thousands of miles.
- 16 hp Power Gain — Dyno-verified increase of 12 kW at 5,900 rpm over the stock RS7 exhaust system.
- 20 Nm Torque Increase — Measured at 2,900 rpm for improved mid-range pull and throttle response on the 4.0 TFSI V8.
- 12.6 kg Weight Reduction — The S-AU/TI/4H system weighs 15.5 kg versus the OEM 28.1 kg system, a 34.8 percent savings.
- Four Carbon Fiber Tips — Quad 120 mm black carbon exhaust tips provide an aggressive visual finish and reduce radiated heat.
- Valve-Controlled Sound — Integrates with the factory RS7 exhaust valve system for quiet highway cruising and full sport sound on demand.
- Direct Bolt-On Fit — No cutting, welding, or modification required; all link pipes and hardware included.
- 3-Year Warranty — Akrapovic backs every S-AU/TI/4H system with a full 3-year manufacturer warranty.
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2014-2017 | Audi | RS7 | Premium Plus |
| 2014-2017 | Audi | RS7 | Prestige |
Specifications
| Detail | Value |
|---|---|
| MPN | S-AU/TI/4H |
| UPC | 3831113515566 |
| Brand | Akrapovic |
| System Type | Evolution Line Cat-Back Exhaust |
| Material | Titanium |
| Tip Style | 4 x 120 mm Carbon Fiber |
| System Weight | 15.5 kg (34.2 lbs) |
| OEM Weight | 28.1 kg |
| Weight Savings | 12.6 kg (34.8%) |
| Power Gain | +12 kW (+16 hp) at 5,900 rpm |
| Torque Gain | +20 Nm at 2,900 rpm |
| Engine | 4.0 TFSI V8 Bi-Turbo quattro |
| Vehicle | 2014-2017 Audi RS7 Sportback C7 |
| Valve Compatible | Yes — factory RS7 exhaust valve integration |
| Country of Origin | Slovenia |
| Warranty | 3 Years |
What's Included
- Titanium cat-back link pipe
- Titanium front silencer section
- Titanium center silencer section
- Titanium rear silencer section
- 4 x 120 mm black carbon fiber exhaust tips
- Stainless clamps and mounting hardware
- Akrapovic installation instructions
Frequently Asked Questions
Does the Akrapovic S-AU/TI/4H fit all 2014-2017 Audi RS7 Sportback C7 trims?Yes. The S-AU/TI/4H is a direct bolt-on fit for 2014-2017 RS7 Sportback C7 Premium Plus and Prestige trim models equipped with the 4.0 TFSI V8 bi-turbo quattro engine.
How much power does the Akrapovic S-AU/TI/4H add to the RS7?The S-AU/TI/4H adds 12 kW (approximately 16 hp) at 5,900 rpm and 20 Nm of additional torque at 2,900 rpm on the stock RS7 ECU with no tuning required.
Will the S-AU/TI/4H work with the factory RS7 exhaust valve system?Yes. The Akrapovic S-AU/TI/4H is fully compatible with the OEM RS7 exhaust valve controls, preserving your comfort and sport sound modes.
Do I need to remap the ECU after installing the Akrapovic RS7 cat-back?No ECU tune is required. The power gains listed are achieved with the stock RS7 engine management. An optional tune may yield additional performance.
How much weight does the S-AU/TI/4H save over the stock RS7 exhaust?The S-AU/TI/4H system weighs 15.5 kg versus the OEM 28.1 kg, reducing exhaust weight by 12.6 kg or 34.8 percent for improved unsprung weight and quicker throttle response.
What do the carbon fiber tips on the S-AU/TI/4H look like?The system includes four 120 mm black carbon fiber tips that exit at the rear of the RS7 Sportback, providing an aggressive motorsport appearance that matches the factory body lines.
How loud is the Akrapovic Evolution Line cat-back on the RS7?With the factory exhaust valves open, the S-AU/TI/4H delivers a deep, aggressive V8 note that rivals track-purpose systems. Valves closed maintains a refined, highway-appropriate exhaust note.
Is the S-AU/TI/4H a special order item?Yes. The Akrapovic S-AU/TI/4H is a special order product. Please allow additional processing time. Contact us before ordering if you need a specific delivery window.
Where is the Akrapovic S-AU/TI/4H manufactured?Every S-AU/TI/4H system is handcrafted in Slovenia at Akrapovic's main production facility, using the same methods and materials as their MotoGP and World Superbike racing exhaust systems.
What warranty comes with the Akrapovic S-AU/TI/4H?Akrapovic covers the S-AU/TI/4H with a 3-year manufacturer warranty against defects in materials and workmanship.
Installation Instructions
- Lift the vehicle safely on a proper lift or jack stands and allow the OEM exhaust to cool completely.
- Loosen and remove the factory cat-back exhaust clamps and rubber hangers beginning at the mid-pipe connection point.
- Lower and remove the OEM cat-back section. Retain all rubber hangers for reuse.
- Dry-fit the Akrapovic S-AU/TI/4H link pipe to the catalytic converter outlet and verify alignment before tightening.
- Hang the front silencer section from the OEM rubber hangers and slide onto the link pipe.
- Connect and position the center silencer and rear silencer sections using the supplied clamps, leaving all connections loose for alignment.
- Attach the four carbon fiber tips to the rear silencer outlets per the included Akrapovic template.
- Verify all sections are centered and do not contact body panels or underbody components.
- Torque all clamps to Akrapovic specification, then start the engine and check for exhaust leaks.
- Reconnect the OEM exhaust valve actuator wiring to the S-AU/TI/4H valve assembly if applicable.
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