Filter Filters Cadillac STS Remove All Filters Price Under $50 (2) $50-$100 (1) $100-$500 (3) Condition New (6) Brand Harmony Audio (5) Kicker (1) Cadillac STS 2005-2011 Factory Speaker Replacement Harmony (2) R65 Package New $88.99 Fits Cadillac STS 2005-2011 Front Door Replacement Harmony HA-R65 Speakers New $44.95 Compatible with Cadillac STS 2005-2011 Factory Speaker Replacement Harmony... $195.99 Fits Cadillac STS 2005-2011 Rear Door Replacement Harmony HA-R65 Speakers New $44.95 Compatible with Cadillac STS 2005-2011 Factory Speaker Replacement Kicker... $244.99 Cadillac STS 2005-2011 Factory Speaker Replacement Kicker (2) DSC65 Package New $159.98