L-TWOO eR7 Electronic Road Groupset — Features and Specifications
The eR7 groupset delivers precise electronic shifting with a documented actuation response time that eliminates the cable stretch and adjustment drift inherent in mechanical systems. Replaceable battery design means you swap a standard cell in seconds rather than waiting hours at a charging station — a practical advantage on multi-day events and touring rides. Full APP programming capability lets you customize shift sensitivity, button mapping, and firmware updates directly from your smartphone, keeping the system current without workshop visits. The trusted road electronic drivetrain architecture is built on L-TWOO’s proven motor-driven derailleur platform, carrying the same internal mechanism geometry used in their flagship eRX line at a more accessible price point. Shop now at the official store to secure the best price, confirm full warranty coverage, and receive fast shipping to your door.
A***a –
It has been, without a doubt, the best purchase on the app. From the first moment, I was surprised by the quality of the product and how easily I could assemble it. Everything arrived perfectly packaged and protected, with all the pieces well organized in the box. The assembly is very intuitive, you don’t need to be an expert because everything was installed and working in just a few minutes. I also loved the app: it’s very simple, practical, and quick to set up. I didn’t have to complicate things or waste time on manuals; everything was ready in a matter of minutes. The shift is precise, smooth, and very reliable, in addition to being versatile, as it can be configured in both 11v and 12v, which makes it adaptable to different road setups. The user experience exceeds my expectations: ease, comfort, and top-notch quality. I fully recommend this purchase to any cyclist who wants to make the switch to a reliable, comfortable, and high-performance electronic shift.
M***l –
Very happy with the product. Shipped to poland, delivery took about 3 weeks.
I’ve ridden around 500 km, including a 300 km night ride, with no issues.
Note: i’m comparing it to shimano 105/ultegra mechanical groupsets, as i haven’t used electronic before.
Installation was easy: cables, battery, hydraulic lines (batteries sold separately). Lines and levers come pre-filled. Works well with shimano 105/ultegra calipers, though stock brakes are also good.
The app is intuitive and allows precise gear adjustment. You can also adjust without the app.
Both derailleurs are fast and precise. Shifters pair directly with the rear derailleur, not via the app.
Ltwoo also provides detailed setup videos on youtube.
Only downside: no auto-trim or automatic fd shifting, likely due to patents.
Will buy another one for my gravel bike.
AliExpress Shopper –
They look good. It’s time to install and test its energy and durability.
For the price, we’ll see how they perform in the future.
AliExpress Shopper –
Great quality and work perfectly. Ive only tested on the bench, easy to link to app and the feature to chose between 10,11 or 12 speed is great. Not fitted to bike yet as its a christmas present. Great price too. Fast shipping, i got lucky with uk delivery 😉
Б***ч –
The kit includes everything needed for installation on a bicycle, plus instructions in Chinese and English. The product arrived in 16 days, 2 days ahead of schedule. I haven’t installed it yet, but it’s clear that everything is made with high quality. I recommend both the product and the seller.