aFe 20-22 Audi RS6 Avant V8 4L (tt) MACH Force-Xp 3in to 2.5in 304 SS Cat-Back Exhaust w/ Carbon Tip Width_8" It can be installed externally

It can be installed externally or in-tank using optional hardware that is sold separately (see Images tab and part numbers

Equal length tubes mean the scavenging effect happens evenly across all four cylinders

STI 2004-2021

this air filter outflowed the factory filter by 70%

Built-in Internal/External Fins: Built-in internal and external fins transfer heat from the oil to the outside air for maximum cooling

aFe 20-22 Audi RS6 Avant V8 4L (tt) MACH Force-Xp 3in to 2.5in 304 SS Cat-Back Exhaust w/ Carbon Tip Width_8" It can be installed externallyThis cat back exhaust system is constructed of 3 IN 2 1 2 IN mandrel bent brushed finished 304 stainless steel tubing for maximum strength and durability. This system features high flow 304 stainless steel mufflers, producing a deep sound. Finishing off this exhaust system are quad 3 1 2 IN diameter carbon fiber 304 stainless steel clamp on exhaust tips. The tips features an aFe POWER logo for a unique style. This system produces a deep sound