BOXI 2 Pcs Trunk Gas Charged Lift Supports For BMW 525i 2001 - 2006, BMW 528i 1997 - 2000, BMW 530i 2001 - 2006, BMW 540i 1997 - 2003, BMW M5 2000 - 2003 Trunk With Rear Spoiler SG402050, 51248222913 Trunk Lift Supports for BMW E39 5-Series Sedan With Rear Spoiler SG402050, 51248222913 Extended Length A [in] 13.66 Compressed Length B [in] 9.71 Heavy gauge body is painted with special epoxy paint, and heat baked with Nitrided rods are hardened, polished, and then painted for long life and applications LifeTime Limited Warranty On All Our Lift Supports