---2.5" bore throughout with quad 3 inch tips ---Manufactured from Mandrel bent T304 grade stainless steel and CNC machined Flanges with full TIG welding for strength and durability ---Designed to be a direct replacement replacement for the OEM system from the catalytic converters back ---A free flowing exhaust is a great way to release power and noise from the B8's 3.0 V6 ---Resonated system to reduce unwanted exhaust drone while retaining its sporty tone Compatible with: ---Audi S4 B8 3.0 V6 TFSI 2009-2016.
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