LTWOO eRX 2x12s / 2x11s Road Electronic Hydraulic Disc Brake Groupset

The reviewer tests the new LTWOO eRX groupset, highlighting improvements in front shifting compared to the previous version. They find the rear derailleur to be excellent and customizable, while the front derailleur, though not as flawless as Shimano, is reliable and close in performance. The brakes are adequate but less refined than Shimano. Overall, the groupset is praised for its value and innovation.

The reviewer discusses the LTWOO eRX 2x12s/2x11s Road Electronic Hydraulic Disc Brake Groupset, highlighting its unique feature of adjustable derailleur settings per cassette star, which allows for compatibility with non-standard cassettes. They note the groupset's affordable price and potential for customization, but also point out several drawbacks including software issues, lack of waterproofing, and a weak front derailleur design.

The reviewer provides first impressions of the LTWOO eRX electronic groupset, highlighting its competitive pricing compared to Shimano 105 Di2, good shifting performance, ergonomic levers, and hydraulic disc brakes, while noting some drawbacks such as bulky front derailleur and lack of complete groupset components.

The reviewer discusses the LTWOO eRX electronic groupset, highlighting differences between an early version he purchased and a newer version sent by the company. He experienced initial issues with battery disconnections, which were fixed by a redesigned battery. He praises the groupset's performance, value, and rain resistance, but notes some ergonomic and software quirks.

The reviewer introduces the LTWOO eRX 2x12s/2x11s Road Electronic Hydraulic Disc Brake Groupset, highlighting a new 'blue edition' with updated aesthetics and minor weight reductions. They compare it to the previous version, noting changes in derailleur and shifter designs, and a significant weight drop in the brake calipers due to a monoblock construction. The reviewer is cautiously optimistic about reliability improvements but remains skeptical based on past issues.

The reviewer discusses the LTWOO V3 eRX eR9 electronic groupset based on experiences from three YouTubers (China Cycling, GC Performance, and Trace Fellow). They note that when it works, the groupset performs well with good shifting, braking, and ergonomics, but all three reviewers experienced reliability issues including waterproofing problems, battery connection failures, and front derailleur malfunctions. The reviewer cannot recommend it for everyday consumers due to these reliability concerns.

The reviewer discusses the LTWOO eRX eR9 electronic groupset as a runner-up for the 'Best Innovation' award. They highlight its innovative approach to navigating patent challenges in the electronic groupset market, particularly noting the creative solutions like hiding the LED indicators. However, they also mention it had some teething problems, which might be why it didn't win the 'Best Product' category. Despite these issues, the reviewer expresses faith in LTWOO's ability to resolve them and improve the product.

The reviewer briefly mentions the LTWOO eRX eR9 2x12s / 2x11s Electronic Groupset, Road Electronic Groupset, Replaceable battery, APP programming but does not provide detailed analysis.

The reviewer briefly mentions the L-TWOO 2025 eRX Road Electronic Hydraulic Disc Brake Groupset 2x10-12 SPEED but does not provide detailed analysis.

The reviewer discusses a failure with the LTWOO eRX electronic groupset where the front derailleur stopped working after being unplugged and reconnected. Through systematic swapping of components, they determined the issue was with the rear derailleur, which houses the system's brains. Despite disassembly, no hardware fault was found, leading them to suspect a software issue. They replaced the rear derailleur and the groupset worked again, but they remain uncertain about its long-term reliability.

The reviewer discusses their experience with the LTWOO eRX electronic road bike groupset, specifically version 1.0, over six months and approximately 2,000 km. They highlight its performance, durability, and recent updates in version 2.0. The reviewer initially faced some early issues but found the groupset to be largely flawless after resolving them. They praise its shifting, braking performance, ergonomics, and companion app, while also noting some early teething problems that were addressed in later versions.

The reviewer briefly mentions the LTWOO eRX eR9 2x12s / 2x11s Electronic Groupset, Road Electronic Groupset, Replaceable battery, APP programming but does not provide detailed analysis.

The reviewer briefly mentions the L-TWOO 2025 eRX Road Electronic Hydraulic Disc Brake Groupset 2x10-12 SPEED but does not provide detailed analysis.

The reviewer compares the LTWOO eRX 2x12s/2x11s Road Electronic Hydraulic Disc Brake Groupset to Shimano Dura-Ace Di2, focusing on shifting performance. They find the shifting smooth and similar, noting a minor hiccup but overall minimal difference. They also discuss the absence of auto-trim due to patent issues, but mention a manual trim via double-click. They have not experienced the reported sleep issue on the rear derailleur, possibly due to firmware updates. They are impressed with the value given the price difference.

The reviewer provides a long-term review of the LTWOO V3 eRX/eR9 electronic groupset after approximately 7,000 kilometers of use. He describes it as a semi-wireless Chinese groupset with shifters communicating wirelessly to derailleurs that are hardwired to a seatpost battery. Overall, his experience has been very positive, finding it well-made, functional, and enjoyable to use, though he notes some minor issues.

The reviewer discusses the LTWOO V3 eRX eR9 electronic groupset as part of a broader overview of Chinese cycling components. He mentions it's an upgrade to the IR9 with some carbon elements, available for around 500-600€ for almost the entire groupset via AliExpress, and compares its feel to Shimano 105. He notes it uses a battery in the seatpost and has app control capability.

The reviewer purchased and installed the LTWOO ERX (referred to as L2, L2 V3, L2 ERX, and ERX) electronic groupset on a winter training bike, replacing Dura Ace Di2. They tested it for approximately 5 months. The reviewer states the rear shifting is fast, reliable, and crisp, comparable to other electronic groupsets. The front shifting is noted as noisy, clunky, and slow, reminiscent of older generation products. The app offers extensive customization, including selecting 11 or 12-speed operation and micro-adjusting individual sprockets, but the initial setup was challenging with a default Chinese language setting. The groupset uses a semi-wireless design with USB-C charging via the front mech, which is praised, and battery life is reported as good. The brakes require non-standard adapters for flat mount frames, which the reviewer dislikes. The groupset is significantly heavier than Dura Ace, comparable to Shimano 105. The price is a major advantage, coming in considerably cheaper than Shimano 105 Di2 when factoring in additional drivetrain components. The reviewer concludes it is a solid competitor to 105 Di2 for tinkerers and self-builders, but has compromises compared to top-tier groupsets.

The reviewer installed the LTWOO eRX electronic groupset on a bike build and tested it over approximately 100 kilometers. He found the shifting to be 'buttery smooth' and was impressed with the overall performance, describing it as giving a 'premium experience'.

The reviewer discusses their experience with the LTWOO eRX eR9 2x12s/2x11s Electronic Groupset, highlighting both its potential and significant issues. They initially chose it for its unique features but ultimately replaced it due to performance problems.

The reviewer spent six months using L-TWOO's electronic groupset (primarily the eR9, with the eRX/eR9 third-generation platform sharing the same charging and hydraulic brake design) and reports that it performs surprisingly normally and reliably in daily use. Shifting performance is described as on par with major brands, with no riding issues encountered, and the reviewer considers it a worthwhile low-cost way to experience electronic shifting rather than a direct Shimano equivalent. The hydraulic disc brakes are praised as a standout, though bleeding work and minor finish details have shortcomings, and after-sales support is essentially absent.