L-Twoo Groupsets: A Comprehensive Guide to China’s Leading Drivetrain Manufacturer
In the evolving landscape of cycling components, L-Twoo has emerged as a formidable contender, offering a diverse range of groupsets that cater to road, gravel, mountain, time trial, folding, and electric bikes. Positioning itself as “China’s largest bicycle transmission manufacturer,” L-Twoo is challenging the dominance of established brands with innovative and cost-effective solutions.
A Brief History of L-Twoo
Established in 2016 in Zhuhai, Guangdong, L-Twoo was founded by Liu Chunsheng, a former SRAM engineer with a decade of experience. Recognizing the scarcity of high-performing domestic brands in the drivetrain sector and the prevalence of counterfeit products, Liu identified a significant opportunity to innovate. The company embarked on developing original products with core patents, aiming to fill the void in the market. L-Twoo’s breakthrough came during the COVID-19 pandemic when global supply chain disruptions allowed the company to step in and meet the demand for quality components. In 2022, L-Twoo introduced its first road bike groupset, followed by the eRX electronic system in 2023. While L-Twoo does not offer complete groupsets, it provides shifters, derailleurs, and hydraulic brakes, requiring buyers to source compatible cranksets, cassettes, and chains from other suppliers.
Key Features of L-Twoo Groupsets
- Diverse Applications: L-Twoo offers groupsets for road, mountain, gravel, folding, and electric bikes.
- Electronic and Mechanical Options: The company provides both electronic and mechanical groupsets to cater to different rider preferences.
- Battery Configurations: Electronic systems feature in-frame batteries for road bikes and on-derailleur batteries for mountain and gravel bikes.
- Simplified Shifting: Electronic levers lack a third button, streamlining the shifting process.
- Modular Components: Cranksets, cassettes, and chains are sold separately, offering customization flexibility.
- Pricing Transparency: Quoted prices exclude import duties, providing clarity for international buyers.
Exploring L-Twoo’s Road Bike Groupsets
L-Twoo’s road bike groupsets are available in three electronic and six mechanical configurations, each designed to meet varying rider needs.
eRX Electronic Road Groupset
The eRX stands as L-Twoo’s flagship electronic groupset, offering two rear derailleur options compatible with 11-32t and 11-36t cassettes across 10, 11, or 12 speeds. The front shifter accommodates chainrings up to 54 teeth and includes a USB-C port for charging the in-frame battery. The 800mAh battery, weighing 60g, boasts a capacity exceeding that of Shimano’s Di2 battery. Shifters operate wirelessly, powered by standard CR2032 batteries, and feature composite bodies with carbon brake levers. Lever reach adjust and integration with L-Twoo’s hydraulic brakes, which utilize mineral oil, enhance the system’s performance. The eRX groupset is comparable in weight to Shimano’s 105 Di2 and SRAM’s Rival AXS.
ER9 Time Trial Groupset
Tailored for time trial and triathlon disciplines, the ER9 groupset features dedicated bar-end shifters and is compatible with 10, 11, and 12-speed cassettes up to 11-32t. Other components align with those in the eRX system, maintaining consistency in performance and design.
ER7 Mechanical Road Groupset
The ER7 offers a mechanical alternative to the eRX, featuring alloy brake blades and a rear derailleur cage constructed from alloy, as opposed to the carbon outer plate found in the eRX. It is powered by the same in-frame battery, ensuring compatibility and ease of maintenance.
RX Mechanical Road Bike Groupset
The RX groupset is L-Twoo’s top-tier mechanical offering, equipped with hydraulic disc brakes and cable-operated drop-bar brakes. Shifters are available in two formats: one resembling Shimano’s STI lever logic and another akin to Campagnolo’s design, featuring a single lever behind the brake and a thumb shifter on the hood. The rear derailleur supports cassettes ranging from 11-28t to 11-32t, with an alloy cage sideplate. The front derailleur accommodates chainrings up to 56t, with a total capacity of 16 teeth.
R9, R7, R5, R3, and R2 Mechanical Groupsets
These groupsets offer varying specifications, with R9, R7, and R5 closely mirroring the RX in features but with slight weight increases and without a time trial shifter option. R3 and R2 are more basic, offering only Campagnolo-style shifting.
Gravel Groupsets by L-Twoo
L-Twoo’s gravel groupsets are designed for 1x systems, with the electronic EG Series featuring a non-removable rear derailleur battery with a 400mAh capacity, charged via USB-C. The derailleur is compatible with cassettes ranging from 11-42t to 11-50t, with two versions supporting up to 12 or 13 speeds. Mechanical options include the GRT13, compatible with 13-speed cassettes up to 11-50t, and the GRT series, offering 12-speed compatibility with Shimano-style right shift/brake levers and brake-only left levers. Further down the range, GR9, GR7, and GR5 provide 11, 10, and 9-speed options, respectively.
Mountain Bike Groupsets by L-Twoo
L-Twoo’s mountain bike groupsets include the electronic ETX, designed for 1x drivetrains with a rear derailleur powered by a non-removable battery, compatible with 10, 11, and 12-speed cassettes up to 11-50t. Mechanical options include the T Series, offering 12-speed compatibility with a rear derailleur supporting cassettes from 11t to 46t-52t,