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Is this budget electronic groupset a Shimano and SRAM killer? L-Twoo of China launches new semi-wireless eRX groupset

The new semi-wireless electronic groupset is priced between 500-650USD approximately minus a cassette and chain, and seems to resemble Shimano Di2 a lot

Chinese groupset manufacturer L-Twoo is not new to the game, but the release of the new electronic eRX road groupset is a first from the brand and certainly comes at an affordable price point. 

The new road-specific eRX groupset resembles the Shimano 105 Di2 groupset a lot aesthetically, but also in terms of function. The system is semi-wireless, meaning that the shifters are operated with a coin battery, but there is a seat-tube battery that is connected to the front and rear derailleurs with a wire. 

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2023 L-Twoo eRX electronic groupset shifter

The rear derailleur is the brains of the system, communicating with the shifters and the front derailleur via Bluetooth. L-Twoo says it only takes 22 milliseconds for the command from the shifter to travel to the rear derailleur, and while it’s hard to envision in practice, we can just take its word on the speed of the system for now.  

2023 L-Twoo eRX electronic groupset front derailleur

The front derailleur also has an auto-trim function which should micro-adjust the derailleur cage to avoid rubbing the chain if you’re cross-chaining.

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In terms of connectivity, L-Twoo has a mobile app available to fine-tune the shifting and update the firmware of the eRX system. 

L-Twoo eRX - shifters and gearing

L-Twoo eRX electronic groupset shifter and rear

The levers are carbon fibre for the eRX model, but there will be an eR9 model available later with more affordable alloy levers. There are two buttons on the levers, one for shifting down and the other for up - again, bearing very similar looks to Shimano’s shifters. 

At the front, you get a standard compact gear ratio with 50-34 chainrings, and at the back, you’ve got a 12-speed 11-32 cassette. 

L-Twoo eRX - pricing and weight

2023 L-Twoo eRX electronic groupset in a box

The total weight of the L-Twoo eRX groupset is claimed to be 1,300 grams, which puts it close to Shimano 105 Di2 which weighs about 1,320g. This weight includes the shifters, front and rear derailleurs, battery, cables and brakes.

And the price? The aluminium eR9 model should retail for about 500$, and the eRX should be about 650$ according to L-Twoo. We know that L-Twoo doesn’t currently offer full groupsets, so you need to source the 12-speed cassette and chain from another manufacturer, but there should be no compatibility issues. We're unsure whether a crankset is included in the price, and even though the picture on L-Twoo's website includes brakes, it's unclear whether you will have to purchase the hydraulic brakes separately. If you do, they set you back between 150 - 260$. 

Unlike L-Twoo’s other drivetrain products, the new eRX groupset doesn’t show up on the brand’s AliExpress site at the moment, so we can’t confirm if and when they’ll show up there - and we can’t confirm availability quite yet. However, L-Twoo told us, “We currently do not have a partner distributor in the UK, but quite a few UK customers buy directly from us.”

It's hard to put together a complete price for the new eRX, but if we assume that the groupset retails for 650$ (~£530), the difference to the Shimano 105 Di2 groupset that retails for £1,730 is potentially huge, even if you have to add your own crankset, cassette and chain.

Although there is not much to go off yet, you can check L-Twoo's website for more details. 


And let us know in the comments what you think of this new groupset! 

Suvi joined F-At in 2022, first writing for off-road.cc and then road.cc and ebiketips too until August 2024. She contributed to all of the sites covering tech news, features, reviews and women's cycling content. A lover of long-distance cycling, Suvi is easily convinced to join any rides and events that cover over 100km, and ideally, plenty of cake and coffee stops. 

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53 comments

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ubercurmudgeon | 1 year ago
4 likes

I've often thought, when going downhill at 80 kph, that what I really want is to trust my braking to a company with a misspelt name typical of an Amazon marketplace seller.

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Secret_squirrel replied to ubercurmudgeon | 1 year ago
4 likes

You mean with imaginary words like Sram?

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ubercurmudgeon replied to Secret_squirrel | 1 year ago
4 likes

SRAM is the initials of each of its four founders. Campagnolo and Shimano are the surnames of their founders. Full Speed Ahead, SunRace, and Fazua are examples of names intended to be evocative of aspects of cycling. I might be wrong, but L-Twoo is the sort of name that gets spit out of the computer program designed to produce non-trademarked and disposable company names. Or maybe it was founded by two people whose romanized names both begin with L, and at least one of them is a fan of owl calls.

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Secret_squirrel replied to ubercurmudgeon | 1 year ago
4 likes

ubercurmudgeon wrote:

SRAM is the initials of each of its four founders. Campagnolo and Shimano are the surnames of their founders. Full Speed Ahead, SunRace, and Fazua are examples of names intended to be evocative of aspects of cycling. I might be wrong, but L-Twoo is the sort of name that gets spit out of the computer program designed to produce non-trademarked and disposable company names. Or maybe it was founded by two people whose romanized names both begin with L, and at least one of them is a fan of owl calls.

 

Sorry gonna call you out on your inbuilt bias there. Just coz we don't know the origin of the name it doesn't mean it doesn't have meaning to the founders. I don't think you'd make the same assumption about a western product. 

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ubercurmudgeon replied to Secret_squirrel | 1 year ago
3 likes

And your assumption, that I wouldn't make the same assumption about a western product, is based on what exactly?

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Secret_squirrel replied to ubercurmudgeon | 1 year ago
2 likes

ubercurmudgeon wrote:

And your assumption, that I wouldn't make the same assumption about a western product, is based on what exactly?

Because you are pretty much tying yourself in knots to sneer and look down on the name of a chinese brand because you dont understand its origins.

You've been seen.

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Dhill replied to Secret_squirrel | 1 year ago
1 like

Secret_squirrel]</p>

<p>[quote=ubercurmudgeon wrote:

And your assumption, that I wouldn't make the same assumption about a western product, is based on what exactly?

Because you are pretty much tying yourself in knots to sneer and look down on the name of a chinese brand because you dont understand its origins.

You've been seen.

I see Secret squirrel is Board again and poking the bear to get a reaction. The naming of the well established brands are correct. SS seems again to have missed the point being made,

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grOg replied to Secret_squirrel | 1 year ago
0 likes

are you implying wacism at play here..

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open_roads replied to Secret_squirrel | 1 year ago
0 likes

Based on one of the above posts - maybe L-Twoo is supposed to convey the hilarity of ripping off another (western) company's IP / R&D spend.

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Rendel Harris replied to ubercurmudgeon | 1 year ago
3 likes

ubercurmudgeon wrote:

I might be wrong, but L-Twoo is the sort of name that gets spit out of the computer program designed to produce non-trademarked and disposable company names. Or maybe it was founded by two people whose romanized names both begin with L, and at least one of them is a fan of owl calls.

Apparently the name L-Twoo is a westernised phonetic rendering of the Mandarin word for "blueprint". Whether that's short for "We've nicked Shimano's blueprint" is not made clear.

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ubercurmudgeon replied to Rendel Harris | 1 year ago
0 likes

Fair enough. You've changed my mind about the name without calling me a racist for having legitimate concerns about a safety-critical product from a previously unknown brand, which happens to be Chinese. I'd still not personally buy one of these groupsets until I'd seen a bunch of good reviews, and probably not before someone else in my club had used one through an entire winter. Then again, I had the same scepticism about early electronic groupsets from established manufacturers, which was born out by the teething troubles they had. I'd buy one now, but I guess that makes me a luddite if you live in Secret_squirrel's black-and-white world.

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Miller replied to ubercurmudgeon | 1 year ago
2 likes

I've bought a fair few products direct from China, carbon frames and rims, and the outcome has mainly been very satisfactory.

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emjay49 replied to Miller | 1 year ago
3 likes
Miller wrote:

I've bought a fair few products direct from China, carbon frames and rims, and the outcome has mainly been very satisfactory.

Whilst China continue to threaten peace with Taiwan and their President is courting Putin.....I'll give supporting the Chinese economy a wide berth.

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grOg replied to emjay49 | 1 year ago
1 like

that'll teach 'em..

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grOg replied to Miller | 1 year ago
0 likes

because anecdotal evidence is so convincing..

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Awavey replied to grOg | 1 year ago
2 likes

There are certainly lots of the youtuber cyclist channels reviewing LTwoo stuff lately, im sure theyll pick this set up too.

Youd have to say their overall combined take has been, it's cheap, it works, it might be better than you expect, but there are problems with it & bits do break and fall off too easily. Caveat emptor.

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quiff | 1 year ago
2 likes

road.cc wrote:

if we assume that the whole groupset retails for 650$(£530), the difference to the Shimano 105 Di2 groupset that retails for £1,730 is huge. 

Yes. But if I've understood correctly, that $650 may or may not include chain, cassette, crankset and brakes...

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ChuckSneed | 1 year ago
0 likes

I doubt major brands will pick it up, because there is more money to be made with the good brands

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Prosper0 replied to ChuckSneed | 1 year ago
2 likes

Incorrect. There's more money to be made with the cheap new brands. When you buy a bike 80% of buyers don't give a fig what brand of groupset it is.

For example mid/low end Cannondales are all on Microshift these days. 

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KDee | 1 year ago
7 likes

And it's in black & gold? Shut up and take my money!

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peted76 | 1 year ago
1 like

Interested! Another player in the game = win for consumers.  

*Pops off to look at the website... doubts start to creep in.

"RX Series 2*12s  HYDRAULIC SHIFTER (Carbon/Aluminium)
Product Introduction:
  Continuous Release
  Lubricating Pivot
  Ice Wings
 

R series is the road series. - The shadow rear derailleur design is applied to the entire series, so there is no need to doubt its passability.
Let you have the ultimate riding experience and enjoy the feeling of galloping in the wind.

 

Well, actually, 'enoying the feeling of galloping in the wind' does sound quite nice.. maybe I will consider some L-Twoo groupset gambling goodness..

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Slartibartfast replied to peted76 | 1 year ago
2 likes

I often wonder what the Mandarin translation offerings from British brands are like.

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a1white replied to peted76 | 1 year ago
2 likes

peted76 wrote:

Well, actually, 'enoying the feeling of galloping in the wind' does sound quite nice.. maybe I will consider some L-Twoo groupset gambling goodness..

To be fair, some of the marketing language used on Shimano's website is equally odd and look at the budget they have.

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