Slingshot Sentry Replacement Lines Sets for V1.0-1.1 (2019-2021 Bars)Who It's For: Includes two line length and strength lines of your choice. For reference, Slingshot installs 500lb outside lines and 800lb inside lines on its bars. The 23" wide bar uses 27m lines, the 20" wide bar uses 20m lines (in addition to 3m line extensions that are not included in this kit), and the 17" wide bar uses 20m lines.