L-TWOO
L-TWOO Groupset for eTT-eRX (Time Trial) - Electronic Hydraulic Disc Brake, 2x10-12 Speed
L-TWOO Groupset for eTT-eRX (Time Trial) - Electronic Hydraulic Disc Brake, 2x10-12 Speed
SKU: LTWOO-ETT-ERX2X12-11-10
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L-TWOO eRX eTT Electronic Groupset — the complete Time Trial (TT) configuration of L-TWOO's flagship eRX electronic hydraulic disc brake groupset. Semi-wireless shifting (Di2-style in-frame battery + wired derailleurs, wireless-style bar-end shift buttons) built for TT/triathlon bikes, compatible with 2x10, 2x11, or 2x12 speed drivetrains (selectable via the L-TWOO app).
Kit Overview
- Usage: Time Trial (TT) / Triathlon
- Main Material: Carbon & Aluminium
- Gearing: 2x (front) / 10-12 speed (rear)
- Shifting Type: Electronic
- Brake Type: Hydraulic Disc (Flat Mount)
- Chainline: 43.5mm
- Front derailleur capacity: 40-56T chainrings
- Rear derailleur range: 11-32T cassette
- Rotor compatibility: 140mm + 160mm
What's Included & Specifications
TT Shift Controller (Bar-End) — ST-ERT1201-R / ST-ERT1201-2L
Built-in battery powered, expandable locking structure for aerobar mounting
Weight: 54g (controller) | Wide, thick-grip TT brake lever, 150g
Front Derailleur — FD-ER1204
Speed: 2S | Mounting: Direct | Operation: Electric
Max Gear Range: 56T | Capacity: 16T | Chainline: 43.5mm
Weight: 142g
Rear Derailleur — RD-ER1203-MC
Speed: 10-12S | Main Material: Carbon & Aluminium
Cage Material: Carbon (outer) / Aluminium (inner)
Max Gear Range: 11-32T
Weight: 290g
Front Brake Caliper — BR-R04A-160F
Type: Hydraulic, Flat Mount Disc Brake | Material: Aluminium
Rotor Compatibility: 160mm | Weight: 140g (incl. brake hose)
Rear Brake Caliper — BR-R07A-160R
Type: Hydraulic, Flat Mount Disc Brake | Material: Aluminium
Rotor Compatibility: 160mm | Weight: 140g (incl. brake hose)
Seat Tube Battery — BT-ER02
Length: 165mm | Diameter: 18mm
Rated Voltage: 7.4V | Charging Voltage: 8.4V
Charging Current: 1.5A | Capacity: 800mAh (5.92Wh)
Charges via USB-C (USB-A to Type-C cable included); 5V/2A+ charger recommended
Power Line / Cabling
Length: 0.9m + 1.2m | Line Diameter: 2.5mm | Plug Diameter: 5mm | Port: 4-pin
Notes
- Cassette and chain not included — compatible with standard 10/11/12-speed cassettes and chains.
- Brake fluid not included. Use high-quality mineral oil (e.g. Shimano) for bleeding/maintenance.
- Firmware updates and shift customization available via the L-TWOO app (iOS & Android).
- 2-year warranty on electronic components against manufacturing defects.
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