I had to replace the bar on my F3-T throttle side, and yes it can be removed. It only cost me $125.00 to have replaced because I was not brave enough to do it myself. You first need to remove the throttle control (if the throttle side), but that is all I remember seeing done. The threaded part you are talking about is another bar on the inside, and cost only $35.00 plus tax (but I believe that was wholesale price).
Is it Friday yet? ... Oh yeah, I forgot. I'm retired
Past bikes
2010 RS - Sold
2012 RT - Sold
2014 RT - Testing completed
2016 F3-T Audio package - Sold