There's a logical reason for why the Tubi Style S5 exhaust system is modular, it simply can't be shipped in one solid piece.  An added benefit is that it allows you to install the system one piece at a time and tailor the sound to your exact liking.  The Tubi Style S5 rear mufflers alone produce an amazing sound that adds an aggressive tone to he relatively understated S5.  The resonated center section not only enhances the V8's deep aggressive tone, but also provides even greater exhaust flow, resulting in increased power and responsiveness.