Downpipe Audi S4 RS6 C5 4.2L V8 with Catalytic Converter
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TurboWorks 63 mm Decat Downpipe with 200 CPSI Sport Catalytic Converters for Audi S6 / RS6 C5 4.2 V8 – Stainless Steel, Flange for OEM Turbo
The TurboWorks Downpipe with high‑flow 200 CPSI sport catalytic converters is the ideal upgrade for owners of Audi S6 C5 4.2 V8 (1995–2001) and Audi RS6 C5 4.2 V8 BiTurbo (2002–2004) who want improved performance while retaining compliance with emission regulations. Constructed from premium stainless steel, it delivers durability, better exhaust flow, and a sporty V8 tone.
Compatibility – C5 Audi 4.2 V8 with OEM Turbocharger
This downpipe is engineered for:
- Audi S6 C5 4.2 V8 – naturally aspirated, model years 1995–2001
- Audi RS6 C5 4.2 V8 BiTurbo – model years 2002–2004
Featuring a dedicated flange for the OEM turbocharger, it ensures perfect fitment and bolt‑on installation without modifying factory exhaust components.
Technical Specifications of the TurboWorks Downpipe
- Material: Stainless steel T304 – corrosion and heat resistant
- Pipe outer diameter: 63 mm
- Catalyst diameter: 90 mm sport converters
- Catalyst type: 200 CPSI – high‑flow sport catalysts
- Flange: fits factory turbocharger
The 200 CPSI sport catalysts offer a balance between performance and legal road use – maintaining emission reduction while increasing power and torque.
Benefits of a Downpipe with Sport Catalysts
- Better exhaust flow – lower backpressure and improved turbo efficiency
- Increased power and torque – particularly in mid‑to‑high rev ranges
- Sporty V8 sound – deeper, more aggressive tone
- Durability and reliability – thanks to stainless steel construction
- Road‑legal compatibility – due to included catalytic converters
Why 200 CPSI?
Sport catalytic converters at 200 CPSI (cells per square inch) provide much higher flow than stock catalysts while still offering partial emission control. This type of converter is increasingly used in both street and track tuning, allowing power gains without risking OBD issues or damaging the exhaust system.
Summary – Performance and Style in One Package
The TurboWorks 63 mm Downpipe with 200 CPSI Catalysts for Audi S6 / RS6 C5 is the perfect solution for VAG enthusiasts who demand more performance without sacrificing durability or compliance. It’s the first step toward professional exhaust tuning – homologated for track use and delivering real dynamic improvements. Choose TurboWorks quality and feel the difference!
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.