CTS Turbo has been dedicated to manufacturing performance parts for enthusiasts by enthusiasts since its inception.  The CTS Turbo B9 Audi A4 2.5″ cat-back exhaust system is hand tig welded using the finest T304 stainless steel. Our exhaust system was designed for both street use and big turbo abuse. The 2.5″ design of the CTS Turbo B9 Audi A4 cat-back is ideal those of us chasing serious horsepower.

Product Details:
– Aggressive sound under hard driving, but subtle when cruising
– Water jet cut flanges
– CNC mandrel-bent stainless steel piping
– Double-wall 4.0″ tips