Chinese Electronic Groupset 6 months later - L-TWOO eRX

There were definitely some teething issues with this eRX groupset from L-TWOO when first released, but how is performing 6 months down the line?

AliExpress store where I bought my eRX groupset:

The eRX from L-TWOO was the first electronic road bike groupset to come from a Chinese manufacturer. At around £600, it comes in WAY cheaper than competitor offerings from the likes of Shimano, SRAM, and Campagnolo, but the first few units had some issues.

The battery holders caused groupsets to fail suddenly, there were allegedly some waterproofing issues, and on my groupset the front derailleur died suddenly for no reason. However since highlighting these early issues, L-TWOO have been working on improvements, and since getting some replacement parts, my eRX groupset has been working flawlessly for the last 2000km.

The ergonomics are great, the braking is absolutely fantastic, the shifting is quick and reliable, and the battery life is very impressive.

To start with, I was very hesitant to recommend this groupset. The issues were unpredictable, there were random differences between groupsets, and ultimately £600 is a lot of money to spend on a groupset that may fail mid-ride. But with the work L-TWOO have put into improving their product over the last year, I feel it is at a point where it has become a viable option for new bike builds.

Big thanks to @ChinaCycling and @GCPerformance18

eRX 'Blue edition' unboxing

Timestamps:
00:00 – Start
00:29 – eRX 2.0 ‘Blue edition’
01:24 – Front derailleur issue
02:47 – Battery housing issue
03:06 – Waterproofing issue
03:33 – Performance 6 months later
06:23 – Button issue
07:36 – Conclusion
09:13 – Bonus clip time

Intro roll:

Please note:
I am not a professionally trained bike mechanic. There can be risks associated with using products that are unbranded, untested, or come from sources where the provenance is unknown. Please talk to a qualified bike mechanic if you are in any doubt.

In essence, be careful, do your research, and cycle safe!!!

[stuartdryer]

One of the best cycling channels on YouTube.

[EricStorms]

Glad your crash was pretty minor. I admire your courage pulling apart the electric bits and trying to (and often succeeding) fix them!

[pigupigu]

Done 3000km on mine.

Friend of mine did 6000km. Replaced a chain at 5000ish. No complaints. Works as it should.

We did get an experienced mechanic to fine tune it for us. Wasn't as smooth before he tuned it. He'd never used the app or seen the groupset. He spent 10min or so playing around with it and said it was easier than any other app.

[nicokilla]

2, 000KM on my LTWOO ER9 ( the brother down to the ERX) and it’s been amazing to me. Only minor issue I had was that my shifter button would stick and always go to my easiest gear on the rear derailleur but that has seen been fixed (not sure how, perhaps software update).

Shifting is so smooth, app is great. It’s only going to get better from here. Has not experienced any problems in Vancouver winter(rain heavy weather). I’ve charged the groupset twice.

Currently debating putting this on my race bike to replace Ultegra r8020.

My advise to make this group set great
- use a shimano chain (sram flat top sticks to the rear derailleur pulleys)
- use their shifting set up and individually tune each gear

[jonathan_f]

I just installed the ER9 groupset this week. Performance has been amazing for the $350 USD sale price I paid for the groupset. I had some issues with the battery cabling, but that has more to do with the frameset I was using. Also it seems LTwoo has ironed out many of the early problems. I also used the opportunity to swap over to a 12 speed cassette, because why not? This has to be the most user friendly electronic groupset on the market. Easy to service mineral oil hydraulic braking, user replaceable batteries, cassette speed flexibility and the ability to fine tune the gearing are all phenomenal. Keep up the good work as well! 🥖🥖🥖

[richg]

3 months using the eRX groupset in all weathers. Working faultlessly. I'm really impressed. My only niggle is, with thick gloves I sometimes inadvertently change gear :-)

[trackar]

An eGR groupset is on the way. Very excited to see how it performs

[pierrex]

I've installed 5 er9 and ridden 2. They're all wonderful. EDIT: 2 of them died last week for no reason. I do NOT recommend LTWOO. the warranty process to get replacement is also very frustrating.

[kaseycarpenter]

I've just taken delivery on mine, have about ~70 miles on it, and have had no issues whatsoever. the ability to fine tune each sprocket is pretty awesome. One thing I haven't found or noticed is the ability to save profiles for say, different wheelsets and freewheel setups. If it is in the app, I didn't come across it. Otherwise, solid groupset, and nice to have a 3rd alternative out there for wireless shifting. Thanks for you honest reviews, between you and Joe, I was able to feel good enough to pull the trigger! 🥖🥖🥖🥖

[freddierodriguez]

Glad you’re safe brother. Thanks for the review. Wouldn’t trust anyone else. Best wishes to you and yours. 🙏🏼

[iTzRafaaaa]

Got my eRX delivered in november 2023 and finished the build early 2024. Put out about 1200km since then and had no issues at all. Everything was working so well, I even completely forgot to charge it after the first 100% and the battery died on a ride after about 650km with lots of climbing and therefore a decent amount of shifts. Because of the issues by Joe, Grant and yourself I was at first not very happy with my decision to place the order. Now I would for sure recommend the groupset without hesitation.

[phillevin]

I’ve had my share of issues with SRAM FORCE AXS, so…. Nobodies perfect. L-TWOO seems to have figured it out, all for it.

[beneyckmans]

I have 2 groupsets at home ERX and a ER9 and 0 issues so far, absolutely love it. Ordered a third one for the gravel bike lol

[tardishousemafia]

I’ve got a groupset sitting in the box in my spare room ready to go on my new build once the frame (OG Evkin CF-025) and wheels arrive. I love this channel because I spend a lot of time perusing Aliexpress for bike parts and it seems like whenever I add something to my cart for next payday you upload a video on it 😂

[edymarkonthego]

Wating for EDS TX. Hope i will hear it from your review bcoz you are awesome in reviewing the details.

[johnp]

I’ve put about the same distance into my eRX set. Apart from an early failure of the rear derailleur which was replaced free of charge it has been working flawlessly. Interestingly I have recently had the same issue with the up shifting. It seems to shift 3 gears with one touch on the shifter. I’ll have to have a look at the springs you mentioned. It’s actually been behaving though so don’t know why it happened. Either way I love it. Smooth, quick and the braking feels very solid. I live the feel of the grips too. They are slimmer than the shimano Ultegra so feel slicker. Enjoy the pasta! 🥖🍝

[THECONTROVERSIALCYCLIST]

Another great review Luke of another great product... Awesome quality and price mate👍👍👍

[johnp]

Luke, loved your vid on repairing the OG-Evkin. That was soo innovative and fun. Great success too. Well done. My LTWOO eRx is still running well. We travelled OS for 8 weeks recently and returned to find the I could not wake up the group set. I re charged and reset it. All good again but I fell off the bike and hurt my shoulder. Looking forward to your new OG-Evkin build!

[kill-quest]

Just this morning I was re-watching your old eRX video and wondering how it was going, glad to hear it's gone so well!

[seraph]

I want it so bad! I'll wait probably another year for the kinks to be ironed out and availabilty to improve but I'm getting it for sure! Never thought I'd be able to afford electronic shifting so soon. Even 105 Di2 costs an arm and a leg where I live. Thank you China!