This product has been designed to fit Mazda 3 (BK) Hatch 2004-9Lift Supports, or Hatch Struts have an average life of 5 years before they begin to deteriorate. While they may continue to work reasonably well one day, they may falter and not perform correctly the next day. When Hatch struts begin to fail they become a serious hazard that can lead to injury. StrongArm lift replacement gas struts can be fitted with the use of simple hand stools and can be completed in just minutes. When used in their correct application, All StrongArm products are covered by a warranty for 12 months from the date of installation. Please note: This listing is for a single Hatch Strut. To replace both the left and right side, 2 will need to be purchased.