Strong Arm 6278 Lift Support This listing includes 2 Lift Supports For the Tailgate. Extended Length from Center Mount to Center Mount is 12.53 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: 6278,8196385,8643038,86430380,86430386,895827552,91546739,9485548,9791KX