Yes it did have the o-ring and I used them not shimano ones.
Good point about why is it there.
There is an exclamation warning in the user manual;
Please use the oil needles and olive ferrules supplied with the Ltwoo kit
I think you are correct and they must be used.

https://a.aliexpress.com/_mLFbTBd

I use bh90 olives/inserts with no issues (erx v1 and er7 v3)- no leaks, great braking performance.

I just found this on AliExpress:  | GOYOJO MINI Digital Torque Wrench 1/4‘’ 3/8‘’ 1/2‘’ Professional Bike Car Repair Adjustable Torque Wrench Hand Tools
https://a.aliexpress.com/_mMppibH


Yeah, I would not try to find this yourself as it’s pretty bad.It’s a pain to set and memory/preset function doesn’t work at all.  Only the real time torque mode works so you can’t just use it- you always have to be looking at the digital meter and use in real time mode. 

Heartily do not recommend

I'm interested in getting a V3 (I'm on V1) but only if the (old, wired) EGR rear mech is compatible with the shifters/rest of the drivetrain (no interest in 1x or the wireless stuff).  I am already running a 36T cassette with V1 and the "regular" V1 derailleur but am tempted by the new levers and USBC charging. I haven't seen a discussion of whether the "old" mechs are compatible with the new front mech and shifters.

I always use an external charger which I figure is better quality charging (probably my imagination) though I use a good one for all my rechargeables.  I don't find I need to charge very often so it's not that much of a PITA and I have two sets of batteries anyway since they are cheap. I always worry about losing or my charger breaking.  I really hate proprietary stuff.

On my erx and egrx (gravel and road) I use these: I just found this on AliExpress: $9.73 | Stone Bike Rear Derailleur Pulley POM NSK Bearing Jockeys 12T 14T 16T MTB Road Bike Narrow Wide Teeth Jockey Wheel Roller
https://a.aliexpress.com/_mOsH8OD.   One in 14 and the other 16.   16 is on the bottom I believe (2 years since ai did this so don’t remember).   Shifting is great- I use a 36 in back with 50/34 on erx and 46/30 with a 42 in back for the egrx also a converted erx brifter in 2x.


It was tough getting it dialed as the app used to kind of suck and I had an erx rear go bad but since that has all been flawless.   Works great with my karoo and bryton (bryton has better options). I over extend the capacity mightily but avoid cross chaining.   They both work a bomb.   I do wish they’d implement full or semi syncro shifting but it’s not that much to pay attention to.   Getting the trim working on the front was way easier than di2.   The micro adjustments are such a better way of doing things.   I also really wish they’d allow arbitrary gear and cog teeth input/display.   As you might guess my drivetrain choices are never offered as options.

One with a sliding plastic 140 or 160 rotor on the left side would be a nice upgrade.

.  What would the purpose of the disc on it be?   Caliper alignment or?

Hi guys,
Yesterday I ordered the eRX v3.
I will upgrade from a Tiagra group, so I will need a new cassette.
Usually the eRX only supports 32t, but in the last few pages I already read that some of you tried more teeths and it still works.
Which cassette with higher than 32t have you tried and is still working?
Any recommendations from ZTTO or Goldix?
Do you also have a chain to recommend?

I’m using an 11-36 hg cassette with absolutely no issues (although I don’t shift into big big or small small ever) with a 50/34 and another with a 46/30 upfront and zero shifting issues.

Has anyone yet tried going 2x on the eGR? I was able to get my mechanical LTwoo GR9 RD to shift well with a 10-42t 11 speed cassette, 46-30t chainring, Ultegra R8000 FD and SRAM GX 12 speed chain. Functionality should be similar with an eGR using an ER9/X FD. I just need to source another battery pack with 2 battery connectors and I have a spare ER9 FD I can use with the eGR set. The gear range should be massive!

This worrks if you start with erx, but it’s a new battery, front mech and brifter (for me) to get functionality so I just got individual erx brifters, battery and mech and they all work great with egr rear mech (11-46 with 46/30 bikinigreen on a p505 power meter.