Bilstein B12 2004 Porsche Cayenne Base Front and Rear Suspension Kit 2001-audi-s4-avant-esi4371095 Replace the Polyphonic Harmonizer behind

Replace the Polyphonic Harmonizer behind the muffler in the ATAK(r) system with muffler 60679 to attain the "S-Type" sound level (quieter than ATAK(r))

Like current versions of the Corvette C6

Borla(r)'s S-Type sound level helps bring out the sweet sounds of Subaru's flat-four boxer engine and features a 3

EXCEPT convertible

Bilstein B12 2004 Porsche Cayenne Base Front and Rear Suspension Kit 2001-audi-s4-avant-esi4371095 Replace the Polyphonic Harmonizer behindBilstein B12 (Pro Kit) suspension kits include a complete set of Bilstein Performance dampers paired with Eibach (Pro Kit) springs that provide moderate lowering between 24 40mm (depending on application). These kits offer dampers and springs that are tuned for each specific application to provide the best fixed height lowering solution. Bilstein B12 (Pro Kit) suspension kits provide the perfect combination of suspension dynamics, quality and