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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.
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Cyclocross Frames, Wheels & Components → CWind GT30 Gravel Bike Build
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 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. Users note smooth shifting, good brake performance, and app customization, but report issues with water ingress, charging reliability, and inconsistent battery life. The groupset is considered good value but with beta-testing quality and poor customer support.
AI-Generated Forum 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
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
Key Points
- MSRP ~3500 RMB (~$500), actual price $300-$650
- Uses 14500 batteries in seatpost holder
- Official max cassette 46T, but works with 50T
- Hydraulic brakes with mineral oil
- App for shifting adjustment and firmware updates
- Compatible with 10-12 speed cassettes
Frequently Asked Questions
What is the maximum cassette size supported?
Officially 46T, but many users successfully use 50T cassettes with B-screw adjustment, though shifting may be less optimal.
How is the waterproofing and has it been improved?
Early versions had water ingress issues in the rear derailleur. Newer versions claim improved waterproofing, but users still recommend sealing connectors with dielectric grease, liquid electrical tape, or heat shrink tubing.
Can I use both shifters for rear derailleur control?
No, the left shifter buttons are currently non-functional in 1x setup. LTWOO has considered adding configuration options but no update yet.
What batteries are needed and how long do they last?
Two 14500 button-top lithium batteries (800-1250mAh). Battery life varies but typically 200-300 miles or thousands of shifts. Quality batteries (e.g., Vapcell) are recommended for better performance.
Are the brake calipers compatible with standard mounts?
No, LTWOO uses a proprietary 70mm flat mount design. Adapters are included for 140mm and 160mm rotors, but post-mount frames require Shimano-compatible calipers.
How do I charge the groupset?
Early versions use a magnetic charging port on the rear derailleur. Newer versions require unplugging the battery cable and connecting a USB charging cable. Cleaning contacts is often needed for reliable charging.
Is firmware update available and what does it change?
Firmware updates are occasionally available via the app, but details are scarce. Recent updates may relate to new aerobar switches, but no major feature changes like left shifter configuration have been reported.
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