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Included software remains emissions compliant and uses your factory exhaust
Fits: 2009-16 Audi A4 (B8) FWD/Quattro
and they all rob or take away additional horsepower just to drive these systems because of their inherent designs
Reinforcing the system's durability
APR Premium Sound Absorption Muffler - 63.5mm (2.5") Audi RS5 B9 Included software remains emissions compliantT304 stainless steel with straight through 63. 5mm (2. 5") inlet and outlet. Oval Body 220mm (8. 66") x 169mm (6. 65") x 211mm (8. 31"). APR's premium line of sound absorption mufflers are now available! Perfect for the do it yourself enthusiast fabricating a custom exhaust system, these mufflers tame your exhaust note and leave a pleasant growl that's sure to turn heads. Internally the system is filled with sound absorption material wrapped around a
