The LTWOO eRX groupset offers innovative features and competitive performance when working, but suffers from significant reliability issues including waterproofing failures, battery connection problems, and inconsistent shifting that make it unsuitable for most consumers.
Pros
- Good shifting performance when functioning properly
- Excellent braking performance with no need for rebleeding after installation
- Modern ergonomic design comfortable for longer rides
- Versatile compatibility with multiple cassette configurations
Cons
- Significant waterproofing issues causing complete system failures
- Battery connection problems with leaf spring vs coil spring design variations
- Front derailleur failures requiring app recalibration or replacement
- Inconsistent shifter button detection, especially on right shifter
Key Facts
- Replaceable battery cells with approximately 900 km range per charge
- APP programming allows switching between 10, 11, and 12-speed cassette configurations
- Hydraulic disc brakes using mineral oil with no reported fluid leakage
Reviews & Ratings
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.
AI Summary
Pros
- Competitive weight compared to Shimano 105 and Altegra
- Modern and futuristic design, especially the rear derailleur
- Replaceable battery and app programming features
more pros in the video
Cons
- Unreliable shifter button detection, especially on the right shifter
- Rear shifting quality is subpar, particularly when shifting to easier gears
- Front derailleur performance is not mentioned positively
more cons in the video
Key Points
- 95 grams heavier than Shimano Altegra 12-speed
- Shifter buttons intermittently fail to detect presses
- Rear derailleur overshifts slightly before aligning, causing noise and clunkiness
more key points in the video
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.
AI Summary
Pros
- Good shifting performance when working
- Good braking performance
- Good ergonomics
more pros in the video
Cons
- Poor reliability with 100% failure rate among three reviewers
- Waterproofing issues causing complete system failure
- Battery connection problems (leaf spring vs coil spring issues)
more cons in the video
Key Points
- Electronic groupset with 2x12s/2x11s configurations
- Replaceable battery (users can swap battery cells)
- APP programming capability
more key points in the video
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.
AI Summary
Pros
- Innovative approach to electronic groupsets
- Creative solutions to navigate patent challenges (e.g., hidden LED indicators)
- Potential for future improvements
Cons
- Had some teething problems
- Did not win the 'Best Product' category due to these issues
Key Points
- Electronic groupset
- Innovative design to avoid patents
- Hidden LED indicators
more key points in the video
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.
AI Summary
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.
AI Summary
Pros
- Flawless performance after initial issues
- Incredible shifting
- Spectacular braking performance
more pros in the video
Cons
- Early issues with front derailleur dying due to a circuit board problem
- Early adopters faced random failures and battery connection issues
- Waterproofing concerns in early versions
more cons in the video
Key Points
- Version 2.0 includes updated calipers, better waterproofing, new buttons, and a 67g weight reduction
- Replaceable battery with excellent battery life
- APP programming available for customization
more key points in the video
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.
AI Summary
Where to Buy
L-TWOO eRX Road Electronic Hydraulic Disc Brake Groupset
2026 New LTWOO V3 ERX 2x12s / 2x11s Electronic Groupset, Road Electronic Groupset, Replaceable Battery, APP Programming
LTWOO eRX eR9 2x12s / 2x11s Electronic Groupset, Road Electronic Groupset, Replaceable battery, APP programming - AliExpress
Specifications
Attributes
Included Components
Spotted an error in the specs? Help us correct it — sign in or create an account.
Questions about LTWOO V3 eRX eR9 2x12s / 2x11s Electronic Groupset, Road Electronic Groupset, Replaceable battery, APP programming
Sign up and share your experience — help other riders decide!
Create Account & Review