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B&B Exhaust System 3.5-Inch Round Double Wall Tip Audi B6 S4 Quatro 4.2L 2004-2005

$1,540.68 Sale:$1,259.96

B&B Exhaust

Model #FPIM-0540


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B&B Exhaust System 3.5" Round Double Wall Tip Audi B6 S4 Quatro 4.2L 04-05

Each Billy Boat Performance Exhaust system incorporates 3 generations of fabrication skill and racing talent. Every system starts with T-304 stainless steel, known throughout the industry as the highest quality material practical for after-cat exhaust applications. All exhaust tubing is mandrel bent on sophisticated CNC machinery for a precise fit and uninterrupted exhaust flow. The use of T-304 stainless steel flanges also offers high strength and complete resistance to harsh elements. All hangers, resonators, and tips are T-304 stainless steel as well. Billy Boat Performance Exhaust mufflers are crafted in-house with years of racing and street development invested into the design. Each muffler is tuned to match its application for the best possible performance gain and sound quality combination. For strength, the muffler end-plates are radiused at the inlet and outlet preventing premature cracking. Additionally, reinforcing gussets are used when necessary. Depending on the application, you can choose from 3 inch round tips with a rolled edge, 4.5 inch oval rolled edge tips, 5.25 inch oval rolled edge tips or DTM style tips for European applications.

Billy Boat Performance Exhaust is known for their finely crafted catback systems. Mandrel bent for a smooth and even exhaust flow, their catback exhaust system frees up horsepower and torque that are wasted by the restrictive stock system. Manufactured from 100 percent stainless steel tubing, B&B catback exhaust features machined billet hangers, a combination of MIG and TIG welding and 3/8 inch stainless steel flanges for durability and precision fit. Using modern flow technology and their proprietary muffler design, each B&B system is custom-tuned to match its application - resulting in the best possible performance gain and sound quality combination. This free-flowing and light weight Catback exhaust system is designed as a direct bolt-on replacement for the restrictive factory exhaust and requires absolutely no modifications to the vehicle or the product installation. In addition to improving performance and sound, the fully-polished muffler and tips offer distinctive style and an aggressive look! Contact Us with any questions.

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Vehicle Engine Notes
2003-2005
Audi S4

Who is B&B Exhaust?

A vehicle exhaust not only triggers your adrenalin rush as a driver but also provides substantial performance gains in your engine power. Factory exhausts are designed for comfort and to lower the noise level of your vehicle. Unfortunately, it also restricts the vehicle's performance, limiting its full potential. Numerous exhaust manufacturers out there claim that they are the best, but none can back it up like Billy Boat Exhaust.

How It All Started

Since 1989, B&B Exhaust (formally known as Billy Boat Exhaust) has been building the highest-quality stainless steel exhaust systems available on the market. The company specializes in producing handmade pitch-perfect exhausts for nearly every vehicle application.

With more than 30 years of experience in the racing and exhaust space, Billy Boat has learned quite a few things about performance. Today, B&B Exhaust has become the go-to exhaust manufacturer of enthusiasts who want quality products that do not break the bank.

Racing Participation

The company has also actively participated in various motorsport disciplines. Whether it is leading the field as the fastest qualifier at the 1998 Indy 500 or leading a team of highly skilled craftsmen, Billy Boat Exhaust has what it takes to get the job done. To B&B Exhaust, performance is measured by more than just power figures; it delivers products beyond consumer expectations.

State-Of-The-Art Facility

All B&B Exhaust products are manufactured in-house. They have their own dyno facility that allows them to test their product design and its performance gains. They also have the industry’s most experienced R&D staff, enabling them to stay up to date with current vehicle trends. It helps them ensure it delivers products that fit and perform to an unrivaled standard. All Billy Boat Exhaust systems and components are manufactured right here in the USA.

What Does B&B Exhaust Offer?

B&B Exhaust originally specialized in the Porsche 911 performance exhaust systems, oil coolers, and intercoolers. It later introduced the Tri-Flo line, named after its unique 3-into-1 Porsche header. 

Today, in its state-of-the-art facility in Arizona, Billy Boat Exhaust continues to manufacture the highest performing exhausts for most sports cars, trucks, and SUVs. It includes offering tantalizing exhaust systems for Porsche, Cadillac, Corvette, Dodge, BMW, Range Rover, and more! 

Why Choose B&B Exhaust?

With years of Indy racing experience, B&B Exhaust understands that the smallest details can make the biggest difference. The brand is proud to serve the needs of performance enthusiasts with the same level of dedication that is often reserved for the most serious and seasoned racing professionals. All B&B products are distinctively designed for maximum results on both the street and track without overlooking the incredible exhaust note that puts a smile on drivers’ faces with each hard acceleration. 

Upgrade to a B&B Exhaust Today

B&B Exhaust has you covered whether you have a daily driver, touring race car, or show car. To know more about them, visit Vivid Racing, as it carries a wide range of Billy Boat Exhaust systems for various vehicles. 

Our B&B product lineup includes Catback exhausts, test pipes, catless downpipes, exhaust tips, intercoolers, headers, mid-pipes, oil coolers, mufflers, complete systems, and more! If you have any questions regarding the items listed above or about B&B Exhaust, please call our specialized parts team at (480) 966-3040.





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