The Audi S5 with its 4.2-liter eight-cylinder engine and four-wheel drive delivers truly dynamic driving. Enhance this by adding the Akrapovic Slip-On stainless steel exhaust system to increase power, reduce weight, and improve sound. This precision-made Slip-On system delivers more power, especially in the low and mid rev range, and you can take this further with the optional link pipe. The effect on the sound is significant, adding a deep resonant sporty sound without droning.