Bring out the best of your 15+ S3 with an exhaust system that is engineered to add more HP, torque, and aggressive sound.

The Billy Boat 3" Quad tip Catback is a direct bolt-on part quality exhaust system, built using lightweight and heavy-duty T304 stainless steel that comes with a lifetime guarantee of superior performance.

They pride themselves on making top-tier motorsports and street pipes, which were the results of testing in-house dynamometer and dyno testing. The results from rigorously testing and tuning were impressive HP and torque gains.

Get yours installed now and experience a solid exhaust system.

Specs:

• 3" System
• Single resonator in the midpipe
• 2 rear mufflers 
• T-304 stainless steel
• Quad Exhaust Tips
• Includes all Gaskets
• Reducer included: Allows the customer to connect their factory downpipe or catback to the B&B part.