Qty (2) StrongArm 6259 Fits BMW Z4 2003 To 2008 Trunk Lift Supports (Conv Only) This listing includes 2 Lift Supports For the Trunk. Extended Length from Center Mount to Center Mount is 11.62 in. Strong Arm supports use standards of high quality you can trust and use with confidence, they install easily in minutes, often times without special tools required. Includes a Limited Lifetime Warranty! Interchangable with the following OEM Numbers: 14250,300100045,51247016186,6259,8196144,9913VD