EDS TX Electronic Rear Derailleur

Driven by a built-in 800mAh rechargeable battery at 8.4V, the EDS TX rear derailleur shifts instantly on a button press — zero cable lag, zero stretch over time. Compatible with 7 to 14-speed cassettes from 10T to 36T, speed configuration set entirely through the WHEELTOP app. The standard pulley wheel uses a 12-tooth positive/negative tooth profile for quieter, more secure chain engagement. Charges through a magnetic Pogopin connector — snap it on, no port covers, no corrosion.

7-14 Speed, Set in the App

Unlike mechanical derailleurs locked to a fixed speed count, the EDS TX lets you define your speed range and per-gear position through the WHEELTOP app — matching it precisely to whatever 7-14 speed, 10-36T cassette you're running.

Carbon Fiber Hollow Oversized Pulley Cage

Oversized pulley wheel systems reduce the chain's wrap angle around each pulley, which means less chain articulation per revolution and measurably lower friction across the full drivetrain. The EDS TX Oversized Pulley Cage rear derailleur runs the same 800mAh electronic platform as the standard TX, upgraded with carbon fiber hollow oversized pulley wheels — lighter than standard, stiffer under load, and noticeably smoother under hard pedaling effort.

Same Platform. Carbon Fiber Upgraded Pulleys.

The TX Oversized Pulley Cage shares the same 800mAh battery, Pogopin charging, BLE/ANT+ wireless, and app configuration as the standard TX rear derailleur. The performance gain comes entirely from the carbon fiber hollow oversized pulley wheel system — no learning curve, no setup difference.

Why Oversized? The Chain Wrap Angle Difference.

At 12 teeth, the oversized pulleys are physically larger than a conventional jockey wheel — letting the chain bend through a gentler arc at each engagement. Less arc per revolution means less per-link articulation friction across every pedal stroke. The hollow carbon fiber construction removes mass from the pulley body without sacrificing torsional stiffness, keeping the drivetrain quieter and more responsive under load.

Precise Front Shifting on Demand

The EDS TX front derailleur runs on its own built-in 600mAh rechargeable battery and shares the same 8.4V system, magnetic Pogopin charging, and BLE/ANT+ wireless link as the rear unit. Pair both derailleurs to the WHEELTOP app for synchronized setup, gear mapping, and live status — front and rear shift in concert with a single button press from the lever.

Shift with a Button. Brake with the Lever.

A press of the shift button sends the command wirelessly straight to the derailleur — no cable pull, no mechanical play to wear in. Each lever runs on a single CR2032 button battery, swappable in seconds without tools. The Rim Brake Carbon Fiber, Disc Brake Carbon Fiber, and Oversized Pulley Cage Carbon builds use carbon fiber lever bodies; the Disc Brake Aluminum build uses an aluminum lever body for a more robust, value-oriented feel.

Carbon Fiber Body — Light, Stiff, Precise.

The carbon fiber lever bodies on the Rim Brake Carbon Fiber, Disc Brake Carbon Fiber, and Oversized Pulley Cage Carbon builds are high-grade cold-laminated carbon fiber — visibly lighter and stiffer than the aluminum variant. The woven surface texture holds grip through wet descents without repositioning. The shift button sits exactly at thumb reach: index finger pulls the brake lever, thumb taps the shift button — no hand movement required.

One Lever, Two Functions.

Brake and shift from the same contact point. The lever body handles the brake pull, the button handles the gear command — both without taking your fingers off the bar.

CR2032 — One Battery. Years of Shifts.

Each shift lever runs on a standard CR2032 button cell. Open the battery compartment, drop in a fresh cell, and you're done — no charging cables, no tools, no downtime. A single CR2032 typically lasts well over a year of regular riding.

Available Everywhere

CR2032 cells are sold at any supermarket, petrol station, or electronics shop worldwide. If it runs low on a trip, a replacement is never more than a few minutes away.

Rim Brake Build

Rim Brake — Carbon Fiber

Carbon fiber lever body paired with rim brake calipers. 2X configuration — front and rear derailleur both included. The lightest of the standard builds — ideal for riders on classic rim-brake road frames.

Upgrade

Rim Brake Build + Upgrade

Rim Brake + Oversized Pulley Cage

Same carbon fiber rim brake lever, upgraded rear derailleur with carbon fiber hollow oversized pulley wheels. Same 2X configuration, same lever, measurably lower chain friction.

Carbon Fiber Body. Rim Brake Compatible.

The carbon fiber lever body is lightweight, rigid, and built to pair with your existing rim brake cable. Shift electronically on a button press while braking through the lever in the same motion you already know. No new calipers, no hydraulic lines — just cleaner cockpit routing and instant gear response.

Lightest EDS TX Configuration

Without hydraulic calipers, the Rim Brake build is the lightest complete EDS TX kit — front derailleur 191.3g, rear derailleur 336.6g, left lever 202.3g, right lever 214.6g.

① Derailleur Cage

② Brake Lever

Build 1

Disc Brake — Aluminum

Aluminum lever body with hydraulic disc brake calipers included. 2X configuration — front and rear derailleur both included. A rugged, value-oriented option for disc-mount frames. Standard 12T pulleys.

Build 2

Disc Brake — Carbon Fiber

Carbon fiber lever body with hydraulic disc brake calipers included — full ceramic pistons, CNC unibody construction. 2X configuration — front and rear derailleur both included. Best all-round build for disc-mount road and gravel frames.

Upgrade

Build 3

Oversized Pulley Cage — Carbon Fiber Hollow

Replaces the standard 12T pulleys with carbon fiber hollow oversized pulley wheels. Currently offered on Rim Brake and Disc Brake Carbon Fiber builds, all in 2X configuration.

CNC Unibody. Built to Run Cool.

The caliper body is CNC-machined from aluminum alloy as a single unit, ensuring rigidity and long-term safety under hard braking. Shark-fin heat sinks on the caliper body increase surface area for better heat dissipation, slowing down thermal fade on long descents. A unidirectional oil circuit prevents brake fluid from flowing backward, keeping lever feel sharp and response quick.

Full Ceramic Pistons

Full ceramic pistons resist high heat and hold a consistent bite point ride after ride — no fade, no spongy lever after a long climb or fast descent.

Per-Gear Fine Adjustment

Dial in every sprocket individually. If one gear feels off, adjust it directly in the app without touching the bike - a precision that cable systems simply can't match.