Pulley Material: Injected Carbon Fiber
Bearing Type: Ceramic bearings
Gear shape: wide and narrow teeth
Please make sure that the brake calipers for flat mount and 70mm post mount are compatible with the frame before purchasing.
The LTWOO hydraulic brake calipers are incompatible with 74mm post mount, and no any adapters can achieve this.
Re-engineered shifters with significantly enhanced grip ergonomics
Relocated charging port to front derailleur (TYPE-C interface)
Eliminated water-ingress risks from rear derailleur’s magnetic charging port
Upgraded to 10,000 RPM motor derailleur:
✓ Increased thrust force
✓ Faster response speed
You can choose 2x12s or 2x11s by connecting to the APP
Installation video tutorial:https://www.youtube.com/watch?v=FaWp7IBWs7s
Re-engineered shifters with significantly enhanced grip ergonomics
Relocated charging port to front derailleur (TYPE-C interface)
Eliminated water-ingress risks from rear derailleur’s magnetic charging port
Upgraded to 10,000 RPM motor derailleur:
✓ Increased thrust force
✓ Faster response speed
eR9 V3 Updates:
Relocated charging port to front derailleur (TYPE-C interface)
Eliminated water-ingress risks from rear derailleur’s magnetic charging port
Upgraded to 10,000 RPM motor derailleur:
✓ Increased thrust force
✓ Faster response speed
The LTWOO flagship road electronic shifting model is designed for competition. It features a lightweight carbon fiber build, easy L-TWOO APP connectivity, and precise shifting. The integrated caliper and DISC hydraulic brakes offer improved heat dissipation. Choose the eRX for a streamlined, high-performance ride.
eR9 model
2x10-12 SPEED
Designed for top performance and reliability. Made from high-strength aluminum alloy with a lightweight design. Supports L-TWOO APP connectivity for an easy and efficient ride. The split caliper ensures stability and reliability. Ideal for those new to electronic shifting.
There is no brake oil in the package. As ship oil is difficult by air. Brake oil this groupset use is mineral oil, you can buy brake oil from bike store around your home.





















