The SmartRide aftermarket air suspension strut is for the front left hand side of the 2005-2011 CLS-Class with AIRMATIC and w/o 4MATIC. This new assembly replaces the O.E. strut and features a new shock absorber designed to provide a comfortable ride. The SmartRide strut includes a new air bladder protected by an aluminum can along with a stamped steel top mount. This new air strut is assembled in the USA with long lasting seals, bump stop, heavy duty crimping rings, and connector valve along with a dust boot to protect the strut.