WHEELTOP EDS TX Wireless Electronic Road Rear Derailleur for 10–36T Cassettes

Instant Shifting, No Cable Stretch

Driven by a built-in rechargeable battery at 7.4V, 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, mounted on a carbon fiber derailleur cage. 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.

Standard

Standard Aluminum Cage

Rugged aluminum alloy derailleur cage with standard 12-tooth pulleys — a tougher, value-oriented option. Matches our Disc Brake Aluminum kit build.

Standard

Standard Carbon Cage

Carbon fiber derailleur cage with standard 12-tooth pulleys. Matches our Rim Brake and Disc Brake Carbon Fiber kit builds.

Upgrade

Ceramic Oversized Pulley Cage

Same carbon fiber cage, upgraded with ceramic bearing oversized pulley wheels for measurably lower drivetrain friction. Matches our Rim Brake and Disc Brake Carbon Fiber kit builds.

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. Swapping in ceramic bearings cuts rolling resistance further versus standard steel bearings, keeping the drivetrain quieter and more responsive under load.

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.

7-14

Speed, app-configurable

10-36T

Cassette compatibility

20,000+

Shifts per full charge

800mAh

Built-in lithium battery

Brand

WHEELTOP

Model

EDS TX Wireless Electronic Rear Derailleur

Application

Road bikes, gravel bikes, cyclocross bikes — drop-bar bicycles with front derailleur mount

Speed Range

7-14 Speed (customizable via WHEELTOP app)

Cassette Compatibility

10T - 36T

Pulley

Standard: 12-tooth positive/negative tooth profile · Ceramic Oversized Pulley Cage option: ceramic bearing oversized pulley wheels

Cage Material

Aluminum Alloy (Standard Aluminum Cage) · Carbon Fiber (Standard Carbon Cage / Ceramic Oversized Pulley Cage)

Wireless Protocol

BLE / ANT+ — pairs with cycling computers, displays gear position and battery level

Charging Port

Pogopin magnetic connector

Battery

800mAh built-in lithium · 7.4V

Weight

354.2g (Standard Aluminum Cage) · 336.6g (Standard Carbon Cage) · 340g (Ceramic Oversized Pulley Cage)

Requires a WHEELTOP EDS TX Shift Lever

This listing is for the rear derailleur only. You'll need a WHEELTOP EDS TX shift lever to control it — buy ours separately or as part of a complete kit, or use one you already own.

Confirm Your Cassette Falls Within Range

The EDS TX supports 7-14 speed cassettes from 10T to 36T, with the exact speed count set in the WHEELTOP app. Verify your cassette falls within this range before ordering.

Pick the Cage Material That Matches Your Kit

Choose Standard Aluminum Cage if you're running our Disc Brake Aluminum kit build. Choose Standard Carbon Cage or Ceramic Oversized Pulley Cage if you're running our Rim Brake or Disc Brake Carbon Fiber kit build. The cage material affects fit and weight — select the version that matches your build.

App-Based Setup Required

Initial calibration must be performed via the WHEELTOP app (free on iOS and Android) after installation.