This electronic gravel groupset offers excellent value with smooth shifting and good ergonomics, but suffers from reliability issues like water ingress and poor customer support, giving it a beta-testing quality.
Pros
- Smooth and fast shifting performance once properly adjusted
- Good brake feel and modulation with hydraulic disc brakes
- Affordable price compared to Shimano or SRAM electronic groupsets
- App allows micro-adjustment of shifting for each individual cog
Cons
- Water ingress issues in rear derailleur, especially in early versions
- Unreliable charging with magnetic port; newer versions require unplugging cable
- Poor customer service and slow warranty support from manufacturer
- Left shifter buttons are non-functional in 1x configuration and cannot be reconfigured
Key Facts
- Uses 14500 button-top lithium batteries (800-1250mAh) in seatpost holder
- Hydraulic disc brakes use mineral oil with 70mm flat mount design
- Official maximum cassette size is 46T but works with 50T and 9-50T cassettes
Reviews & Ratings
The LTWOO eGR 1x12s is an electronic gravel groupset with hydraulic disc brakes, using mineral oil and 14500 batteries. It supports 10-12 speeds with an official max cassette size of 46T, though users report compatibility with 50T and even 9-50T cassettes. The MSRP is around 3500 RMB (~$500), but actual prices vary from $300-$650. It includes shifters, rear derailleur, brake calipers, seatpost battery, and cables. Long-term reviews (2+ years, 1000+ miles) are positive, with users praising its reliability, smooth shifting, good brake performance, and excellent ergonomics with taller hoods and adjustable lever reach. However, the newer 2026 version removed magnetic charging, requiring unplugging the rear derailleur cable for charging—seen as a downgrade. Other issues include water ingress in early versions, poor customer support, expensive proprietary charging cables ($50), and non-functional left shifter buttons in 1x setup. The groupset offers great value but has beta-testing quality and limited updates, with no USB-C charging or major firmware improvements yet.
AI Summary
Pros
- Smooth and fast shifting performance once dialed in
- Good brake feel and modulation with hydraulic disc brakes
- Affordable price compared to Shimano or SRAM electronic groupsets
- App allows micro-adjustment of shifting for each cog
- Compatible with larger cassettes (up to 50T) despite official 46T limit
- Excellent long-term reliability, with users reporting 2+ years and 1000+ miles of trouble-free use
- Superior ergonomics with taller hoods and better brake lever reach adjustment compared to competitors like Wheeltop GeX
- Very long battery life with quality batteries, lasting months with minimal drain even during storage
- Shifts faster and under pedal load better than competitors like Wheeltop GeX
Cons
- Water ingress issues in rear derailleur, especially early versions
- Unreliable charging with magnetic port; newer versions require unplugging cable
- Poor customer service and slow warranty support from LTWOO
- Left shifter buttons are useless in 1x configuration and cannot be reconfigured
- Inconsistent battery life reporting and rapid drain with poor quality batteries
- Brake calipers use non-standard mounting, requiring adapters and causing fit issues
- Newer 2026 version removed magnetic charging, requiring unplugging rear derailleur cable for charging, seen as a downgrade
- Replacement charging cables are expensive ($50) and proprietary, with limited third-party options
Key Points
- MSRP ~3500 RMB (~$500), actual price $300-$650
- Uses 14500 batteries in seatpost holder
- Official max cassette 46T, but works with 50T and 9-50T
- Hydraulic brakes with mineral oil
- App for shifting adjustment and firmware updates
- Compatible with 10-12 speed cassettes
- Newer 2026 version removed magnetic charging
- Long-term reliability reported at 2+ years and 1000+ miles
- Superior ergonomics vs competitors like Wheeltop GeX
- Replacement charging cables are proprietary and expensive ($20-50)
I have previous experience with L-Twoo groupsets. I much prefer the feel of the eGr shifters compared to the eR9...they have a far more tactile feel to the shift buttons, and the hoods are slightly chunkier (I find eR9 hoods a little too narrow). I went with a 46T max on the rear as that is the max stated capacity of the eGr. I _think_ it could take something bigger, but I don't really feel a need for it...42-46 is a far more generous gear than I'm used to.
Where to Buy
LTWOO eGR 1x12s Electronic Hydraulic Disc Brake Gravel Bike Groupset Road Electronic, APP programming, Gravel eGR Electronic 11s
LTWOO eGR 1x12s Elektronische hydraulische Scheibenbremse Gravel Bike Groupset Road Electronic, APP-Programmierung, Gravel eGR Electronic 11s - AliExpress 18
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