Vorsprung Autowerk

Experience enhanced performance and a refined exhaust note with our high-flow resonated downpipes designed specifically for Audi B8 and B8.5 models.

Crafted from premium materials, these downpipes feature dual straight-through resonators meticulously engineered to eliminate drone while delivering a powerful and exhilarating exhaust sound.

Key Benefits:

• Increased horsepower and torque
• Improved throttle response
• Smoother power delivery
• Aggressive and sporty exhaust note
• Drone-free operation for a comfortable driving experience
• Direct bolt-on installation for easy and hassle-free upgrade

Upgrade your Audi B8 or B8.5 today with our resonated downpipes and unleash the true potential of your vehicle.

We won’t sugarcoat it—almost all forged wheels come out of China. If you’ve ever scrolled Alibaba at 2am, you already know. The problem? There are tons of manufacturers, and the quality, finish, and safety can be all over the map.

That’s where we come in. We’re enthusiasts first, and after seven years of testing, failing, and testing again, we’ve found the factories that actually live up to the hype. In fact, one of the biggest names in Audi-style wheels happens to use the exact same vendor we do. You could say we're here to fill the VOID.

So what do we really offer? No guesswork. No sketchy middlemen. Just a straight shot to wheels that are built right, look amazing, and won’t compromise safety. Think of us as the filter between you and the noise—you only pay for our time to connect you to perfection.

Experience ultimate performance with our Forged "Rotor" Style Wheels. Engineered for your Audi, these custom wheels are available in a variety of sizes and colors. Their lightweight design not only enhances speed and handling, but also adds a sleek touch to your vehicle. Upgrade your ride today.

Unbeatable Strength. Unrivaled Durability. Unzerstörbar.

When it comes to your Audi’s performance, settling for anything less than perfection is simply not an option. Introducing the Unzerstörbar Crank Pulley Bolts, specifically engineered for the Audi EA837 engine. Crafted from high-quality steel, these bolts offer a level of strength and reliability that your stock bolts simply can’t match. With our Unzerstörbar (indestructible) guarantee, you’ll experience superior durability and a rock-solid fit, mile after mile.

Key Features:

• Grade 14.9 Industrial Toughness: Designed from ultra-grade high-strength steel, these bolts are  significantly stronger than traditional steel, ensuring they withstand the most demanding conditions without fail.
• Tested to Specification: For a bolt to be rated as a 14.9 grade bolt they must meet a minimum tensile strength of 1440MPa (208854.3 PSI).  These bolts have been tested and verified to 1520 MPA (220457.4 PSI) which is directly comparable to ARP hardware.
• Precision Engineered: Tailored specifically for the Audi EA837 engine, these bolts offer a precise fit and exceptional performance, eliminating the risk of breakage or failure under high stress. These bolts feature a 10mm socket head that has been machined to fit within the tolerances of the crank pulley.
• Corrosion-Resistant: Thanks to the black oxide's resistance to rust and corrosion, these bolts remain rock-solid, even in the harshest driving conditions—no more worrying about oxidation and wear.
• Unzerstörbar Durability: These bolts are made to endure the heat, torque, and vibration your Audi can throw at them. Whether you're on the autobahn or carving through twisty mountain roads, they’re built to last.
• Easy Installation: With a direct fit and straightforward installation process, upgrading your Audi's crank pulley bolts to the Unzerstörbar Crank Bolts is quick and hassle-free.
• Vorsprung Logo

Why Choose Unzerstörbar Crank Bolts?

• Unmatched Strength: Unlike weaker OEM bolts that are prone to snapping under pressure, the Unzerstörbar Crank Bolts will hold up, ensuring your engine runs smoothly without the worry of sudden failure.
• Built for Performance: Whether you're racing, track days, or just pushing your Audi to the limit, these bolts are ready for action.
• Perfect Fit for Audi EA837: Designed specifically for this engine, every bolt is crafted with precision for an exact fit—no modifications required.

Upgrade your Audi EA837 with Unzerstörbar Crank Bolts and experience a new level of performance, durability, and peace of mind. With these bolts under the hood, you’re ready for whatever your driving adventures throw at you.

Get ready to go further, faster, and stronger—because with Unzerstörbar, your engine is unstoppable.

Torque: 40 Nm plus blue thread locker (included).

25MM - OEM Length

30MM - Fluidampr and CTS Turbo

35mm - JHM

SKU: VA-UCPB-025, VA-UCB-030

Vorsprung Autowerk 3.0T High-Flow Catted Downpipes
Built for Real Power, Without the Compromises

Once you move past a basic single pulley setup on the Audi 3.0T, 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.

After seeing too many low-quality test pipes fail or turn cars into raspy, smelly messes, we decided to build something better. Something we’d actually run on our own cars — and trust over the long haul.

Why 400-Cell Metallic Cats? Because Balance Matters.

Everyone loves the sound of a performance exhaust — until the drone and fumes from cheap test pipes make your car feel like a straight-piped lawnmower. That’s why we chose 400-cell s-woven metallic catalysts — the same type trusted by top-tier names like GESI.

They strike the right balance: strong enough to hold up to repeated abuse, dense enough to smooth out noise and odor, and efficient enough to maintain flow and support serious power. Too many brands cut corners with 200- or 300-cell ceramic cores to boost profits, but that’s not how we work.

We sourced the highest-quality non-branded metallic cats we could find — not because they were cheap, but because they were the best-performing option we could offer without inflating the price.

Performance, Reliability, and Thoughtful Design

• Full 2.5” flow path from top to bottom, with no tapering down to OEM size

• Smooth transition to OEM-style lower flanges for easy fitment

• 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

• Heat shielding included to control temps, reduce heat soak, and protect nearby components

• 304L stainless steel construction (2.0mm wall thickness) throughout — built to last

We’re currently beta testing emissions compliance with a number of users — so far, everything is running clean. These converters are rated to withstand temps well beyond what the supercharged 3.0T can throw at them.

And for peace of mind? You get a 12-month, unlimited-launch warranty against catalyst failure. Go ahead — drive it like you mean it.

A Vehicle Fitment:

• Audi B8/B8.5 S4 & A4 3.0T (2009–2016)

• Audi B8/B8.5 S5 & A5 3.0T (2007–2017)

• Audi Q5 & SQ5 3.0T (2012–2018)

• Audi A6 (C7/C7.5) 3.0T (2011–2018)

• Audi A7 (C7/C7.5) 3.0T (2010–2018)

• Audi A8 (D4) 3.0T (2011–2018)
  Note: Does not fit C6 A6, 4L Q7, or 4M Q7.

Warranty Disclaimer: No catalysts, including ours, are designed to withstand crackle or burble tunes and cannot withstand ignition-cut launch control environments. We reserve the right to void warranty if such conditions were present.