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Bilstein B14 (PSS) Suspension Kit for 2002-2009 Audi A4 Quattro Cadillac Full-length ride-height adjustment separates preloadBilstein B14 (PSS) Suspension Kit for the 2002 2009 Audi A4 Quattro feature ride height adjustability in an OE quality, direct fit package. These kits offer monotube performance Dampers with matched springs that are tuned for each specific application. The zinc coated and threaded body design will give you the flexibility to find the perfect ride height setting for your intended use while providing unsurpassed protection against the harshest road