Vorsprung Catless Downpipe, Audi EA825 4.0T V8

Built for Real Power, Without the Compromises - Tested and validated to deliver reliable performance without concern for premature failure.

Once you move past a basic tune on the 4.0T, you're asking a lot more from the factory cats — and honestly, they just can’t keep up. We’ve seen it time and time again: stock converters break down under the extra heat and pressure, and when they do, the risk isn’t just poor performance — it’s engine damage.

We decided to build something better. Something we’d actually run on our own cars — and trust over the long haul.

Engineered for Endurance, Guaranteed for Life

We understand that a lifetime warranty offers little value if you're frequently dealing with the inconvenience and expense of part replacement and re-installation labor. At Vorsprung Autowerk, our focus isn't just on warranty duration; it's on product longevity and reliability.

We chose our materials and design specifically to eliminate the common failure cycle of 12-24 months. Our components are built right the first time to stay on your vehicle.

We provide a Lifetime Warranty because we are confident you won't need to use it.

Performance, Reliability, and Thoughtful Design

• Full flow path from top to bottom, with no tapering down to OEM size
• Smooth transition to OEM-style lower flanges for easy fitment
• Vorsprung reinforced flange design
  
• Precision TIG-welded and back-purged for maximum strength
• Double-walled pipe ends to resist cracking over time
• Extra-thick 10mm stainless flanges, reinforced inside and out to prevent warping and treated for an ultra smooth mating surface
• Heat shielding included to control temps, reduce heat soak, and protect nearby components
• 304L stainless steel construction (Vorsprung Spec 2.0mm wall thickness) throughout — built to last

And for peace of mind? You get a an unlimited-launch warranty against catalyst failure. Go ahead — drive it like you mean it.

Please note: These are made to order. Delivery times are approximately 30 days.