2026 New LTWOO EGR 1x13s / 1x12s / 1x11s / 1x10s Wireless Gravel Electronic Groupset for Gravel Bike, APP Programming

EGR

Shifting Control

Single short press:

Downshift — the rear derailleur moves one gear

toward the larger sprocket.

Double short press:

Upshift — the rear derailleur

moves one gear toward the smaller sprocket.

Calibration Mode

In calibration mode:

Short press (1 second):

Exit calibration mode without saving calibration

parameters.

Press and hold for 2 seconds:

Exit calibration mode and save calibration

parameters.

Press and hold for 2 seconds:

Enter calibration mode — green indicator flashes

rapidly.

Transport Mode

After entering transport mode,

the rear derailleur will not be awakened by slight

vibrations.

Press and hold for 5 seconds:

Activate transport mode — red indicator flashes

twice.

Press and hold for 5 seconds:

Deactivate transport mode — green indicator

flashes twice.

Initialization

Press and hold for 10 seconds:

The rear derailleur will reset and require

readjustment.

Pairing

Press and hold the shifter function button for 3 seconds

until the green indicator stays solid.

Short press the rear derailleur function

button to complete pairing

Shift Lever

Body Material: Composite fiber

Clamp Ring Size: 22.2/23.8

Power supply: CR2032 Battery

Brake type: Hydraulic disc brake

Reach adjustment: Yes

Lever reach (mm): 90-95

Brake oil: L-TWOO "O ONE" mineral oil

Protection level: IPX7

Ergonomic Drop Bar Shifters with Shark-Skin Grip – Enhanced Comfort & Stable Handling for Road Bikes

These 3rd-generation shifters feature an upgraded ergonomic lever body that widen the palm and thumb support area. This design encourages a more natural hand position, effectively spreading pressure across your hands to reduce fatigue and numbness on long-distance rides.

The lever hoods are wrapped in a newly developed shark-skin texture that provides a firm, non-slip hold. The micro-pattern also helps wick away sweat quickly, so your hands stay dry and in full control—even during intense sprints or steep climbs.

Dear derailleur

Speed: 10/11/12/13

Shift mode: Electronic shift

Compatible Tail Hook: Direct installation

Body Material: Aluminum alloy

Limit: Mechanical limit

minimum sprocket: 11

Maximum sprocket : 42/50T

Power supply: Non-removable battery

Rated battery capacity: 400mAh

Charging interface: Type-C

Cluth Damping: Yes

Length of guide plate (mm) : 93

Impact Rebound Technology – Instant Derailleur Recovery from Shocks

Integrated at the inpivot point of the rear derailleur's parallel linkage, the Impact Rebound system delivers an instantaneous return force. This ensures that even after the derailleur absorbs a sudden impact or hard knock, it snaps right back into its original position—keeping your shifting crisp and accurate ride after ride.

Tension Damping System – Smooth, Controlled Cage Movement

Built into the P-joint (pivot axle) of the rear derailleur, the Tension Damping mechanism uses a precision internal damper to add extra friction resistance to the cage's one-way movement. This gives you a more stable, controlled feel when shifting—reducing chain slap and keeping your drivetrain quiet and protected on rough trails.

callipers

One-Piece CNC-Machined Aluminum Brake Caliper with Self-Balancing Hydraulic Circuit

Precision-machined from a single block of high-strength aluminum alloy, this monocoque caliper delivers maximum stiffness with zero flex points.

The dual-way balanced oil circuit features interconnected fluid passages that enable dynamic pressure equalization—operating on the communicating vessels principle to automatically compensate for pressure imbalances. This ensures even pad engagement, consistent lever feel, and no sponginess under hard braking.