This is a replacement part (#3 on diagrams) for the frontlines (center lines) of the Core Sensor 2, 2s, and 3 control bars. The lines included in this set are intended for Sensor bars that have an overall length, from the bar to the kite, of 24 meters.

Frontline Replacement Instructional Video

CORE Sensor 3 – How to replace a frontline.mp4 from CORE on Vimeo.