Audi S4 Exhaust can be used for this amazing German speedster. Produced for America in 2000 2001 2002 2003 2004 2005 2006 and 2007 in variants, this monster created a lot of buzz in the performance tuner market. Housing a brilliantly designed 2.7 liter bi-turbo engine this car went from 0-60 in about 5.5 seconds. One major disadvantage this car had was that it shared its frame and body with the A4 which was a markedly lower end vehicle, cost wise. Some car enthusiasts hesitated to spend the extra 10 plus thousand dollars only for a beefier engine, suspension, and minor exterior styling differences. Nonetheless S4 Exhaust are hot items because everyone that has purchased one of these amazing vehicles are happy with their purchase. Check out our selection and lineup of S4 Exhaust. These S4 Exhaust will keep this car going in many different ways. The S4 Exhaust of your car is a complex system that consists of a header, catalytic converter, pipes, and muffler. This system is designed to eliminate waste gas from within the engine of your car. The faster and more efficiently this gas is allowed to escape the better overall the S4 Exhaust system works. The most important part of the S4 Exhaust system to most is the muffler. The muffler is the final piece the S4 Exhaust gas travels through before it exits into the environment. The S4 Exhaust system should be able to eliminate the waste gas while also maintaining proper S4 Exhaust back pressure so that the engine doesn't have to do much more work to operate. Common S4 Exhaust manufactures include: 5Zigen, APEX Borla, FlowMaster, GReddy, HKS, JIC Magic, MagnaFlow, Tenzo Racing, and many others. These parts can include any pieces of the S4 Exhaust system from the header on down to the mufflers.