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.
- Aggressive sound under hard driving, but subtle when cruising
- Water jet cut flanges
- CNC mandrel-bent stainless steel piping
- Double-wall 4.0″ tips
- Drone-free resonators
- Will not cause a CEL
- 10-12hp gain by replacing restrictive factory exhaust
- 2017-2019 Audi A4 2.0T (will not fit facelift models with fake exhaust tips in bumper)
Note: compatible with factory catalytic converter or aftermarket test-pipe, high-flow catalytic converters.