SoSmellyAir

My wife has an Electra Loft 7D Loft 7D Step-Thru | Electra Bikes (trekbikes.com). The Trek product specifications list a steel 25.4 mm quill stem, although I have also seen some bike shops advertise it as having a forged alloy quill stem. (Yes, I understand that technically steel is an alloy of iron and other metals.)

I would like to replace it with a taller Nitto MT-10 quill stem (Nitto MT-10 Long Quill Stem, (25.4) 35 Deg X 100 Silver - Modern Bike), and have two questions: (1) Will it fit? (2) How to remove the handlebar from the old quill stem and install it into the new quill stem without removing shifter, brake levers, and grips? The grips are on super tight.

Iride01 

You might consider getting a threadless stem adapter along with an appropriate stem. Then you won't have issues with shifters, brake levers, and grips for stem changes in the future.

https://www.universalcycles.com/sear...s+stem+adapter

The link is only to show you what they are, not necessarily that they are the best value.

But as to your question, if the clamp size for the handle bar is correct, then you are probably good with your choice in your OP. Be careful not to scratch up your bar as you remove it from the stem and if you are installing them in a new quill stem.

The threadless stems with removable face plate just make so much more sense to me. Maybe not vintage in looks. But I'm not going for that.

SoSmellyAir

I think my wife wants the WWII vintage look and the Dutch style upright riding position. So no threadless stem adapter. Thank you for the suggestion though.

The handlebar clamp size is correct, i.e., 1" or 25.4 mm. So I guess without a removable faceplate, I must strip the bar of everything else before I can remove it and reinstall it in another stem.

oldbobcat

Yes, this will work. Just remove the grip and controls on one side. I recommend the left.