I just got my new trek 7.5 fx about 2 weeks ago. I love this bike. Amazing.. The only thing I want to add on it at the moment is a mirror to the handlebar ends. I'm about to do a 30 mile commute and will be going down many one lane highways. I really need a mirror for this. I've heard people in the past talk about not being able to put any attachments on the trek fx handlebars. Is this true? It has the new isozone grips. I would like to know if anything will fit before I purchase. Anyone have experience with these?

a few I have found..

https://www.amazon.com/Mirrycle-MTB-M...3744861&sr=8-1

https://www.amazon.com/Third-Eye-Bar-...3744861&sr=8-4

Consider a Helmet mount mirror?

I tried a helmet mounted mirror and did not like the "blind spot" the mirror itself creates in your peripheral view. I too have an Fx (7.3) and would be interested in any suggestions for a bar mounted mirror...

The regular MTB mirror in the link above WILL NOT WORK. There's a special mirror from the same company designed to fit the new IsoZone bar/grip combo, shouldnbe available at Trek dealer or by order from Trek.

I don't have a mirror on my 7.3, but I have a Mountain Mirrycle on my Felt, and it works pretty well.

Thanks. I found what I needed now. https://www.westbrookcycles.co.uk/acc...r-black-p94303

i'll have to find a usa dealer though..

I use a Blackburn multimirror on my fx. https://www.blackburndesign.com/racks_mirrors.html

Should be easier to find in the US.

I think this is the one I'm using for my 7.3FX. Have you thought about just going to your LBS and see what they've got, and have them install it?