Tested with factory dampers.

Fitment:
2005 Chrysler 300 Base
2005 Chrysler 300 C
2005 Chrysler 300 Limited
2005 Chrysler 300 Touring
2005 Dodge Magnum R/T
2005 Dodge Magnum SE
2005 Dodge Magnum SXT
2005 Dodge Magnum SXT Special Edition
2006 Chrysler 300 Base
2006 Chrysler 300 C
2006 Chrysler 300 Limited
2006 Chrysler 300 Touring
2006 Dodge Magnum R/T
2006 Dodge Magnum SE
2006 Dodge Magnum SXT
2007 Chrysler 300 Base
2007 Chrysler 300 C
2007 Chrysler 300 Limited
2007 Chrysler 300 Touring
2007 Dodge Magnum R/T
2007 Dodge Magnum SE
2007 Dodge Magnum SXT
2008 Chrysler 300 C
2008 Chrysler 300 Limited
2008 Chrysler 300 LX
2008 Chrysler 300 Touring
2008 Dodge Magnum R/T
2008 Dodge Magnum SE
2008 Dodge Magnum SXT
2009 Chrysler 300 C
2009 Chrysler 300 Limited
2009 Chrysler 300 LX
2009 Chrysler 300 Signature Series
2009 Chrysler 300 Touring
2010 Chrysler 300 C
2010 Chrysler 300 Limited
2010 Chrysler 300 S
2010 Chrysler 300 Touring