Cobra Audi R8 4.2 V8 FSI Gen 1 Pre Facelift Cat Back Exhaust AU101. PART NUMBER – AU101. MODEL – R8 4.2 V8 FSI Gen 1 (Pre-Facelift). This Audi R8 performance exhaust is made in stainless steel pipework and replaces the rear section from the catalysts backwards.
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