Now Offering CURB-SIDE Pickup / FREE SHIPPING on Orders $49+ *exclusions apply

Stealth Cat-Back Exhaust System - 3"

Stealth system - performance without the noise!
Mfg Part #
ECS Part #
Billy Boat Performance
Availability: Direct Ship, Ship ETA Mar 24, 2021
Does this fit my vehicle?

Product Details

Billy Boat's S4 Exhaust is a stainless steel mandrel bent cat-back exhaust. Our exhaust begins after the two lower factory catalytic converters and is two 2.25" pipes that merge into one 3" pipe. This exhaust is very quiet and simply changes the tone of the exhaust to a deep unobtrusive sound. With TIG welding fully stainless construction and CNC'd hangers you will not find a higher quality system on the market.

This stealth system is quieter, and helps cut down on the noise that some enthusiasts hate.

This Part Fits the Following Vehicles

Make Model Submodel Engine
Audi B5 S4 All 2.7T
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

Terms of Use Privacy Policy ECS Tuning is part of Enthusiast Auto Holdings