Milltek Valved & Non-Resonated Catback Exhaust System for D5 Audi S8 Long Wheelbase



Milltek Valved and Non-Resonated Catback Exhaust System

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Milltek Valved & Non-Resonated Catback Exhaust System for D5 Audi S8 Long Wheelbase

Milltek has skillfully developed a collection of exhaust systems for individuals seeking to improve both the auditory and visual appeal of their cars. Engineered for simple setup, these systems act as an uncomplicated replacement for the original exhaust and come in a range of designs. This assortment allows car owners to customize the sound’s intensity and tone, achieving a fuller and more gratifying auditory experience. Made from the sturdy 304L “Aircraft” grade stainless steel, every Milltek catback system is designed to withstand tough environments, ensuring ongoing effectiveness and reliable longevity.

Milltek’s Valved & Non-Resonated Catback Exhaust System for the D5 Audi S8 Long Wheelbase stands as a testament to advanced engineering and design precision, tailored for enthusiasts who crave an aggressive edge to their vehicle’s acoustics without sacrificing sophistication. The inclusion of valves provides the flexibility to adjust sound levels, ensuring that the driving experience can be tailored to suit personal preference and situational requirements.


  • Type: Valved / Non-resonated / Catback
  • Tip Finish
    • Brushed Titanium
    • Burnt Titanium
    • Carbon Fiber
    • Cerakote Black
    • Polished
  • Tip Shape: GT
  • Pipe Diameter: Twin 80mm
  • EC Approved: No
  • Motorsport Use Only: No
  • Outlet: Quad

What’s Included

  • LH lower downpipe
  • RH lower downpipe
  • LH front silencer replacement pipe
  • RH front silencer replacement pipe
  • Active center section
  • LH connecting pipe
  • Connecting pipes (LWB models only)
  • RH connecting pipe
  • LH rear silencer
  • RH rear silencer
  • LH valved outlet pipe
  • RH valved outlet pipe
  • 4.5″ tips (4)


  • Audi S8 LWB: D5 (2020+)  | 4.0L Bi-Turbo FSI V8


  • For Long Wheelbase models only
  • Does not require cutting of the OE system

About Milltek

Milltek is committed to designing performance exhaust systems that are tailored to the needs of the driver, covering an increasingly broad spectrum of vehicles. The company is dedicated to ongoing innovation, with its research & development team working tirelessly to bring to market the most sought-after exhaust solutions. Manufactured in the UK and distributed to over 90 countries worldwide, Milltek Sport stands as one of the most widely available performance aftermarket brands, continually striving to meet the evolving demands of performance exhaust enthusiasts around the globe.

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.
Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.
We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at with any inquiries.


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