ChevroletTrailblazerEXTRear Air Suspension Spring Set. Brand: Unity. Fits Y...Chevrolet Trailblazer EXT Rear Air Suspension Spring Set. Brand: Unity. Fits Years: 2002, 2003, 2004, 2005, 2006, 02, 03, 04, 05, 06. Heavy Duty Air Suspension Spring/Bag Kit -- Kit Includes (2) Rear Air Springs; Heavy Duty; Towing Heavy Duty Models...more