In need of a Billy Boat 2.5" Dual Single Tips Cat Back Exhaust System for your Audi B6 A4?   Modded Euros is happy to bring you a brand that never cuts corners.  Billy boat products are all meticulously hand-made.  This exhaust system is made from T304 stainless steel and is guaranteed to last a lifetime.  Throughout the entire power band, you will see gains in both horsepower and torque.  This product not only delivers quality performance, but killer sound to match.

For A4's with 5 speed transmissions

*Stealth version has Center Muffler and  rear mufflers*

Specs:

• 2.5" Downpipe with Flex Joint
• 2.25" center pipe with Center muffler.
• Polished muffler and tips
• 3.5" Dual Single ROUND Rolled-Edge Tips
• TIG welded fully stainless construction
• CNC hangers 
• All necessary gaskets included in all kits
• Reducer included: Allows the customer to connect their factory downpipe or catback to the B&B part. 

Exhaust Sound Examples:

 Stealth Exhaust- 2.5" downpipe with flex joint, 2.25" Center Pipe with Muffler, splits into two mufflers with  3.5" tips