For "extracting" kick in this way, you need to find track with clean and unload moment-elements, it's means - No Rides, textures, atmospheres in moment, when Kick attack & 1 or 4 part of kick are hitting.
If you want to cut kick by some producer, in a lot of times producers use same kick in lot of tracks and remixes, so you probably will find version of track where you can cut it.
P.S. for SUB-Tail you better find another Uplifting Trance kick from libraries, and mix it with attack which you cut, it will be better than here. because when you cut high & mid freq to get this sub-tail from track - you lost body and lot of useful frequences.
I hope this tutorial will be helpful for you! I'm used this method many times.
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