One thing I never thought much about when buying my E-bike is that unlike my 1960 era Schwinn 3 speed, there is no way to raise the handlebar stem.  I'm 6'1 with rotator cuffs that have gone through 70 years of abuse and having the seat above the handlebars is at times not the most pleasant feeling.

I was looking around for a solution and found a review of a Radmission owner who swears by this as a solution.  My questions are has anyone tried this, does it truly fit the radmission, and is it a safe solution (it seems to be.) https://amzn.to/3mmDpQ2

There are other extenders out there but this seems to be very sturdy, stable, and gets mostly high grades from users.  Hope to hear some feedback.