I went with L and have the same arm positioning as your second photo. That is the correct position. I ordered CeeGee arm pads for the extensions. The CeeGee padding goes all the way up the extension and gives more complete arm support. Although it was different at first to have my elbow off of the back of the extension, I have really enjoyed the comfort and support of these extensions. Yes the fit is different, I get it but you will adjust and really like it.

Kevin, are there adapters that allow for a bit more reach? I'm not sure how far out I can safely install the TFE Pro extensions and may need the help of a bracket or adapter that adds reach.

Not at this time. We do not have a wide option.

I was able to build my bike easily based on what many people discussed here.


Thank you to everyone who contributed here. :)

I did some 3D printing for the BTA, Computer mount, and Extension Grip

Any chance of sharing the STL of the grips? they look great!

Nice job - bike looks epic! and that dinner plate of a chainring - whoa!!

---

Regards, Richard

I will pay you to print one of those BTA/Computer mount & grips right now! DM me.

The grip is a typical FDM using fuzzy skin. Let’s upload some more detailed photos.











When my company's work becomes a little more relaxed (maybe... next week?),I plan to share the STL of the components I printed on Thingiverse for free.


If I post it there, I will bring a link and mention it here. :)


All printing components are personalized to me and may not be suitable for everyone.



For example, the grip was tailored to my hand and I had to cut off about 20mm of the end of the extension.
If I cut this out, the epoxy inside the tube would interfere with the shifter installation, so I had to use a Dremel to carve out the inside.

I can't recommend this annoying and dangerous thing to others. If you use my design without cutting the extensions, it will look ridiculous.
Therefore, I share my design, but I hope you use it only for reference purposes.

Thank you for interest in my hobby-level work :)

Could you let us know? My fitter flagged that I really should have about 20 more mm of forward adjustment as well as 20mm laterally.

I take it the armrest angle adjustment plate won’t work? Part 670-0276000050

We have no plans to make a wide option unfortunately. The plates are the same width. They are just a replacement part.

https://www.thingiverse.com/thing:6539436

I've been busy living a busy life in the real world, so I came back here quite late.

As it occurred to me, I quickly uploaded my design and left a link.


it requires some tricky work, so honestly, I recommend using my design only as a reference. :)

Awesome! Many thanks!