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TOOQUV Cycling
L-TWOO ERX TT Wireless Electronic Groupset for Triathlon & Time Trial Bikes
TOOQUV · Bicycle transmission
€649,00 EUR
€1.000,00 EUR
PRODUCT DETAILS +
*LTWOO eRX-TT 2X12 ELECTRONIC TRIATHLON / TT GROUPSET
2X12 ELECTRONIC SHIFTING | DUAL-POSITION SHIFT CONTROL
HYDRAULIC DISC BRAKES | 13T / 16T OVERSIZED PULLEYS
*PRODUCT OVERVIEW
The LTWOO eRX-TT is an electronic hydraulic groupset designed for Triathlon, TT, and Time Trial bikes.
Combining 2x12 electronic shifting, hydraulic disc braking, dual-position shift control, and aerodynamic cockpit integration, it is built for high-speed riding, training, and competition.
*KEY FEATURES
2X12 ELECTRONIC SHIFTING
Electronic front and rear derailleurs provide fast, smooth, and precise gear changes.
DUAL-POSITION SHIFT CONTROL
Shift gears from both the brake levers and the aerobar extension controllers for convenient control in multiple riding positions.
HYDRAULIC DISC BRAKES
Provides strong, progressive, and controlled braking performance at high speeds and during technical riding.
13T / 16T OVERSIZED PULLEYS
The rear derailleur features a 13T upper pulley and 16T lower pulley with sealed ceramic pulley construction.
CARBON FIBER COMPONENTS
Carbon fiber brake levers and rear derailleur cage provide lightweight construction and a performance-focused finish.
APP ADJUSTMENT
The LTWOO APP supports electronic system setup, gear configuration, limit adjustment, and micro-adjustment.
*TECHNICAL SPECIFICATIONS
DRIVETRAIN:
2x12-Speed
SHIFTING SYSTEM:
Electronic Shifting
BRAKE SYSTEM:
Hydraulic Disc Brake
BIKE TYPE:
Triathlon / TT / Time Trial
SHIFT CONTROL:
Brake Levers + Aerobar Extension Controllers
FRONT DERAILLEUR:
Electronic Direct Mount
REAR DERAILLEUR:
Electronic Rear Derailleur
UPPER PULLEY:
13T
LOWER PULLEY:
16T
PULLEY TYPE:
Sealed Ceramic
REAR DERAILLEUR CAGE:
Carbon Fiber
BRAKE LEVERS:
Carbon Fiber
RECOMMENDED CASSETTE:
11-30T / 11-32T
MAXIMUM CASSETTE:
32T
AEROBAR INTERNAL DIAMETER:
18.6–22.5 mm
MAIN BATTERY:
Internal Seatpost-Mounted Lithium Battery
SYSTEM TYPE:
Partially Wireless Electronic System
APP SUPPORT:
LTWOO APP Adjustment
*WHAT'S INCLUDED
1 × Left Electronic Hydraulic Brake Lever with Carbon Fiber Lever
1 × Right Electronic Hydraulic Brake Lever with Carbon Fiber Lever
1 × Left Aerobar Extension Shift Controller
1 × Right Aerobar Extension Shift Controller
1 × Electronic Front Derailleur
1 × Electronic Rear Derailleur with 13T / 16T Oversized Pulleys
1 × Front Hydraulic Brake Caliper with Hose
1 × Rear Hydraulic Brake Caliper with Hose
1 × Internal Lithium Battery
1 × Electronic Cable Set
1 × Dedicated Charging Cable
1 × Adapter, Bolt, and Mounting Hardware Kit
*COMPATIBILITY
Designed for:
Triathlon / TT / Time Trial Bikes
2x12 Drivetrains
Hydraulic Disc Brakes
Direct Mount Front Derailleur Installation
11-30T or 11-32T Cassettes
Maximum Cassette: 32T
Aerobar / Extension Internal Diameter: 18.6–22.5 mm
Internal Seatpost Battery Installation
The frame must provide sufficient internal routing space for hydraulic hoses and electronic cables.
*IMPORTANT
The LTWOO eRX-TT is designed specifically for Triathlon and TT applications.
The system allows shifting from both the brake levers and aerobar extension controllers.
The main battery is installed internally inside the seatpost, so sufficient internal space must be confirmed before purchase.
This system is not intended for MTB, 1x Gravel, or incompatible non-TT bicycle configurations.
*NOT INCLUDED
CASSETTE
CHAIN
CRANKSET / CHAINRINGS
BOTTOM BRACKET
BRAKE ROTORS
WHEELS
FRAME
TIRES / INNER TUBES
USB POWER ADAPTER
MINERAL OIL / BLEED KIT
INSTALLATION TOOLS
Other components not listed under “WHAT'S INCLUDED” are not included.
*INSTALLATION
PROFESSIONAL INSTALLATION RECOMMENDED
Installation may require electronic cable routing, internal battery installation, brake hose trimming, hydraulic brake bleeding, aerobar controller installation, APP setup, and derailleur adjustment.
Professional installation by a qualified bicycle mechanic is strongly recommended.
*SHIPPING & WARRANTY
SHIPPING ORIGIN:
Ships from China
WORLDWIDE SHIPPING:
Available
DDP SHIPPING:
Available for Selected European Countries
STORE WARRANTY:
1-Year TOOQUV Store Warranty
EU CONSUMER RIGHTS:
EU consumers additionally retain their applicable statutory consumer rights, including the minimum legal guarantee required by local law.
*NEED HELP WITH COMPATIBILITY?
Not sure whether the LTWOO eRX-TT is compatible with your bicycle?
Please contact us before ordering and provide:
BICYCLE MODEL
FRAME TYPE
CURRENT DRIVETRAIN
CASSETTE SPECIFICATION
CHAINRING SPECIFICATION
AEROBAR / EXTENSION INTERNAL DIAMETER
FRONT DERAILLEUR MOUNT TYPE
CURRENT BRAKE TYPE
SEATPOST INTERNAL SPACE
We will help you check compatibility before purchase.
-
72-hour dispatch
-
1-Year TOOQUV Commercial Warranty
-
Delivery: 7–15 business days (EU)
What's Included
Your order includes only the items shown in the selected product option.
Please check the product images and option description carefully before placing your order.
If you are unsure about the package contents, feel free to contact our support team before purchasing.
Compatibility
Please verify compatibility with your bicycle before purchasing.
We recommend checking drivetrain speed, brake type, axle standard, crank interface and frame compatibility.
If you are not sure, simply send us your bike specifications via WhatsApp or Email and our team will help you choose the correct model.
Shipping & Warranty
- Orders are processed and dispatched within 72 hours after payment is received (excluding holidays).
DDP (Delivered Duty Paid) shipping is available for selected European countries. Import duties, VAT and customs clearance fees are included in the shipping cost for eligible destinations.
Estimated delivery times vary depending on the destination country, customs clearance, weather conditions and local logistics. If you would like a more accurate delivery estimate, please contact our customer service team or reach us via WhatsApp.
All products are covered by our Store-backed 1-Year Warranty.
A tracking number will be provided once your order has been shipped, allowing you to monitor the delivery status throughout the entire journey.
Warranty
All products include a 1-Year Store Warranty.
If your product has a manufacturing defect during the warranty period, please contact our support team.
We will provide troubleshooting, replacement parts or warranty service depending on the situation.
Need Help
Need compatibility advice?
Our cycling specialists are happy to help.
WhatsApp：
+86 18676711300
Email：
kevinzhang@tooquv.com
Why TOOQUV
Built for performance builds
1-YEAR WARRANTY
Every purchase includes a 1-year warranty and dedicated technical support.
DDP SHIPPING AVAILABLE
DDP shipping is available for selected destinations. Duties and import taxes are included in the shipping fee, so no additional import taxes are required upon delivery.
TRUSTED CYCLING BRANDS
Featuring WHEELTOP, L-TWOO, Magene, XCADEY and other leading cycling brands.
L-TWOO FAQ
How do I perform the initial setup and adjustment?
After installation, pair the components if required, install the compatible cassette and chain, and adjust the derailleur according to the manufacturer's instructions. Fine adjustment may be required to achieve smooth and accurate shifting.
How do I update the firmware?
Firmware updates can usually be completed through the compatible APP. Make sure the battery level is sufficient and keep your device connected during the update. Do not interrupt the update process.
How do I know if an L-TWOO groupset is compatible with my bike?
Before purchasing, please check your bike type, frame compatibility, brake type, cassette, freehub body, and axle standard. You can also send us your bike model and current drivetrain specifications for a compatibility check.
Which L-TWOO groupset is suitable for my bike: eR7, eRX, GRT or eGR?
eR7 and eRX are mainly designed for road bikes. GRT is designed for gravel and all-road riding. eGR is designed for gravel and off-road applications. Please choose the model based on your bike type, riding style, and required drivetrain configuration.
What is the difference between wireless and semi-wireless L-TWOO groupsets?
Wireless systems communicate between components without shift cables, providing a cleaner setup. Semi-wireless systems may use wireless communication between selected components while other parts remain connected by wires. The exact configuration depends on the specific model.
Which L-TWOO APP should I use, and how do I connect my groupset?
Please use the official APP specified for your L-TWOO groupset model. The APP can be used for system connection, firmware updates, button configuration, and other supported settings. Connection instructions may vary depending on the model.
Are your products genuine?
Yes. All products are genuine and sourced directly from manufacturers or authorized suppliers.
Do you offer a warranty?
Yes. Eligible products are covered by a 1-year warranty against manufacturing defects.
Will I have to pay import duties or taxes?
For selected countries and shipping methods, DDP (Delivered Duty Paid) service is available. Please contact us before ordering if you have questions about taxes in your country.
Do L-TWOO electronic groupsets require professional installation?
Professional installation is recommended, especially for hydraulic brake systems and electronic shifting systems. Correct installation and adjustment can help ensure proper shifting and braking performance.
Which brake oil should I use for L-TWOO hydraulic brakes?
Please use the brake fluid specified by L-TWOO for your particular model. Do not mix different types of brake fluid. If you are unsure, contact us with your exact groupset model before adding or replacing brake fluid.
What type of thru axle is compatible with my bike?
Thru axle compatibility depends on your bike frame and wheel standard. Please confirm your frame's front and rear axle specifications before purchasing.
Which cassette and freehub standards are compatible with the groupset?
Cassette compatibility depends on the specific L-TWOO groupset model, speed, derailleur capacity, and freehub body. Please check the product specifications or contact us with your current cassette and wheel hub information before purchasing.
How long does the battery last, and how do I charge it?
Battery life depends on the model, riding frequency, and usage conditions. Please charge the components using the recommended charging method and cable. Avoid using damaged chargers or charging equipment.
What should I do if the shifting is not working properly?
First, check the battery level, component connection, firmware version, derailleur alignment, and chain and cassette compatibility. If the problem continues, contact us with your order number, product model, and a short video showing the issue so we can assist you.
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