Downpipe Audi S4 B5 2.7 Biturbo Turbo K03 / K04 K04 RS6
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Downpipe Audi S4 B5 2.7 Biturbo – high-performance catalytic converter replacement for tuning
The downpipe for Audi S4 B5 2.7 Biturbo is one of the most essential modifications when tuning V6 twin-turbo engines. This product by TurboWorks is designed for maximum exhaust gas flow and increased turbocharger efficiency. It replaces the factory catalytic converters, delivering better performance, a more aggressive sound, and a noticeable increase in horsepower and torque.
TurboWorks Downpipe – performance exhaust system for Audi 2.7 Biturbo
This performance downpipe for the Audi S4 B5 is made from high-grade stainless steel, resistant to high temperatures and corrosion. The 76 mm (3 inch) exhaust pipe provides significantly improved exhaust flow compared to the stock exhaust system. It’s the perfect choice for those planning chip tuning or turbo upgrades to K04, K04 RS6, or hybrid turbo kits.
What are the benefits of installing a downpipe on the Audi S4 B5 2.7 Biturbo?
- Increased engine power – enhanced exhaust flow reduces turbocharger load
- Faster turbo spool – K03 / K04 turbos reach boost pressure quicker
- More aggressive sound – sporty, clean V6 Biturbo exhaust tone
- Removal of stock restrictions – downpipe as a catalytic converter replacement
- Ready for further modifications – perfect base for high-power builds
Technical specifications – 3” Downpipe Audi S4 B5 2.7 Biturbo
- Diameter: 3 inches (76 mm)
- Material: high-grade stainless steel
- Type: Downpipe / Catalytic Converter Replacement / Cat Delete Pipe
- Fits turbochargers: K03, K04, K04 RS4, K04 RS6 C5
- Welds: professional TIG welding
- Installation: direct fit – plug & play
Compatibility with Audi models
This downpipe is fully compatible with the following Audi S4 B5 models equipped with the 2.7 V6 Biturbo engine:
- Audi A4/S4 B5 Avant 2.7 Biturbo quattro 265 HP (195 kW), production years: 1997–2001
- Audi A4/S4 B5 Sedan 2.7 Biturbo quattro 265 HP (195 kW), production years: 1997–2001
Downpipe as a catalytic converter replacement (Kat-Ersatzrohr)
The factory catalytic converters in the Audi S4 B5 are often a bottleneck when modifying the engine. A cat delete downpipe eliminates this restriction, improving not only power output but also cooling efficiency and turbocharger response. This solution is especially recommended when upgrading from K03 to K04 turbos or building setups above 400 HP.
Legality and product usage
This downpipe does not have road homologation (TÜV). It is intended for use on race tracks, events, or show cars only. Installation is at the user's own risk and responsibility.
Type of warranty: manufacturer's warranty.
Warranty period: 24 months.
The manufacturer's warranty means that in the event of a defect or malfunction, the product will be repaired or replaced by an authorized service center. In most cases, proof of purchase (receipt or invoice) is required.
To submit a warranty claim, please contact our store via the warranty claim form. The product must be sent back to us at your own expense. If the claim is approved, we will refund the shipping costs upon presentation of proof of payment.
If you have any questions regarding the warranty conditions or the status of your claim, please contact our customer service department.