The Bull-X catalyst replacement pipes for the Audi S4/S5 3.0 TFSI can be used as a complete replacement for the original components. Precise fitment and high-quality materials allow straightforward installation. The optimised diameter and pipe routing make this product ideal for tuned engines and for fully developing the engine’s sound character. The difference in sound is particularly clear when combined with a modified exhaust system and our downpipes.
- Plug-and-play solution
- Perfect fitment: simply replaces the original component
- High-quality materials
- Made in Germany
- 100% TIG welded
- Flow-optimised and performance-enhancing
- Improved durability and throttle response
- Optimal evacuation of exhaust gases
- No obstructive edges at the transitions
- Designed and tested using CAD and on a dynamometer
- Available with or without a silencer
Scope of delivery
- Catalyst replacement pipe, passenger side
- Catalyst replacement pipe, driver’s side
Road use: This product is not approved for use on public roads and is intended for track use only. Legal road use is possible only with an HJS catalyst carrying EG approval; other catalyst replacement pipe versions are not approved for public-road use.
Suitable for: Audi A6 VII (4G/C7), Audi A7 I (4G), Audi S4 V (B8), Audi S5 I (8T).
Manufacturer’s vehicle data
- Bull-X Hosenrohre ab Katalysator 2,5″ für Audi S4/S5 B8 und A6/A7 3.0 TFSI
Original product name by HG Motorsport (»z.B.« = e.g.). Please check model, year and engine of your vehicle before ordering; if in doubt, contact us and we will check for you.
Approval
This part has no ECE, ABE or Teilegutachten approval — it is intended for track / off-road use.
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