Filter Filters Cadillac STS Remove All Filters Price $50-$100 (1) $100-$500 (1) Condition New (2) Brand Harmony Audio (1) Kicker (1) Cadillac STS 2005-2011 Factory Speaker Replacement Harmony (2) R65 Package New $88.99 Cadillac STS 2005-2011 Factory Speaker Replacement Kicker (2) DSC65 Package New $159.98