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WHEELTOP EDS GeX Wireless Electronic Groupset 1x12 Speed Gravel Bike Disc Brake

WHEELTOP EDS GeX Wireless Electronic Groupset 1x12 Speed Gravel Bike Disc Brake

$589.00
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1-Year Warranty Official Wheeltop warranty included. Lifetime technical support from our team.
Authorized Partner Authorized WHEELTOP Partner: 100% Genuine & Factory Backed.
Description
Complete Wireless Groupset Bundle

WHEELTOP EDS GeX Disc Brake — Full Groupset Bundle

1x12 Speed — Hydraulic Disc Brake — Flat Mount

Everything you need to build a complete single-chainring electronic drivetrain in one box — no separate crankset order, no cross-referencing a chain compatibility chart, no mismatched brake calipers. This bundle pairs the WHEELTOP EDS GeX wireless electronic shifting kit (hydraulic brake-shifter, rear derailleur, RA7800 disc calipers) with a matched EVOSID SL1 12-speed optimized DUB crankset, a SUMC SX12 12-speed chain, and a SUNSHINE-SZ 12-speed wide-range cassette — 11-45T. The whole drivetrain is matched and ready to install.

In the Box

Every Part, One Box

01Hydraulic Brake-Shifter Levers (L+R)
02Rear Derailleur
03RA7800 Disc Brake Calipers
04Crankset (Single Chainring)
05Bottom Bracket
06Chain
07Cassette (12-Speed)
WHEELTOP EDS GeX Disc Brake 1x12 full groupset bundle parts

A Verified Combination, Not Just Parts in a Box

This isn't a random parts bundle. Aoeagle built this exact combination onto a complete bike and put it through rigorous testing before offering it as a set — confirming smooth, precise, quiet shifting between every component and the WHEELTOP EDS GeX.

What's Inside the Kit

EDS GeX Electronic Rear Derailleur — 12-Speed

Wheeltop EDS GeX rear derailleur

EDS GeX Electronic Rear Derailleur

Powered by an 800mAh built-in rechargeable battery, the GeX delivers approximately 20,000 shifts per charge — months of riding between top-ups for most gravel cyclists. The magnetic snap-on charging connector makes top-ups effortless — no exposed port, no cover to lose. The IP67-rated sealed housing keeps mud, water, and grit out at all times. It ships already configured to 12-speed, dialed in for the cassette included in this bundle. Operating temperature -20°C to 60°C.

Internal Chain Damper

A precision-engineered damping system suppresses chain slap and prevents dropped chains on rough gravel, washboard roads, and mixed-terrain surfaces — keeping your drivetrain quiet and controlled when the going gets rough.

Disc Brake Configuration

Integrated Hydraulic Brake-Shifter

The GeX shifter unifies electronic gear control and hydraulic braking in one ergonomic lever body — pre-bled and ready to bolt onto flat mount frames.

Hydraulic Braking. Electronic Shifting. One Lever.

Shift up or down with a button press — the derailleur responds with zero cable lag. The hydraulic circuit delivers powerful, modulated stopping power running on mineral oil, matched to the RA7800 calipers included in this bundle. Lever reach is adjustable up to 8mm. IP65 rated against water jets and dust. Available in aluminum or carbon fiber lever.

Shifting

Wireless Electronic

No cables, instant actuation

Braking

Hydraulic Disc

Mineral oil, flat mount

Weather

IP65 Sealed

Water jet & dust resistant

Battery

CR2032

Tool-free coin cell swap

Wheeltop EDS GeX hydraulic brake-shifter lever
Complete Groupset Bundle

EVOSID SL1 — 12-Speed Optimized DUB Crankset

A single-chainring, direct-mount crankset purpose-built for 12-speed drivetrains — matched to the EDS GeX rear derailleur above and the cassette below, with a threaded bottom bracket included.

EVOSID SL1 12-speed DUB crankset

Built for 12-Speed From the Ground Up

The EVOSID SL1 crank arms are forged aluminum alloy, CNC-machined into a one-piece structure for high stiffness and crack resistance under hard pedaling — starting from a forged blank rather than machining from bar stock gives the crank arm a stronger internal grain structure, with the factory quoting roughly 15% lower weight and 20% higher stiffness on this crankset. The chainring spider is a separate 7075 aluminum alloy piece, using a 3-bolt direct-mount interface (T25 Torx bolts) with a tooth profile specifically optimized for 12-speed chain engagement — the factory rates shifting efficiency at roughly 30% higher than a non-optimized profile. Runs on a SRAM DUB-standard 28.99mm spindle, weighing 643g for the 165mm length or 648g for the 170mm length. Available in black or silver.

Crank Length

165 / 170mm

Spindle

DUB, 28.99mm

Q-Factor

147mm

Bottom Bracket Shell

68-73mm (threaded, BB included)

3-Bolt Direct-Mount Chainring

40T / 42T

Two chainring sizes covering the mainstream gravel bike gearing range — a 40T for a slightly easier spin on loose or steep terrain, a 42T for a taller top-end on faster, flatter routes. Machined from 7075 aluminum alloy with a structurally cut-out spider for a genuinely featherweight build, and a CNC-cut narrow-wide (positive-negative) tooth profile that grips the chain on every link for efficient chain retention on rough terrain.

Weight

90g (40T) / 97g (42T)

7075 aluminum, structurally cut out

Tooth Profile

Narrow-Wide (CNC)

Improved chain retention

EVOSID BC1.37x24T threaded bottom bracket

Threaded Bottom Bracket, Cups Included

The crankset ships with its matching EVOSID BC1.37"×24T (BSA/English threaded) bottom bracket. Overall width is 90mm and it accepts bottom bracket shells from 68mm up to 73mm wide, with included spacers (two 2.6mm gaskets, a 3mm spacer, and a 4.5mm spacer) to take up the difference. Threading directly into a standard threaded shell also avoids the creaking that press-fit bottom brackets are known for.

Is Your Frame Compatible?

As long as your frame's bottom bracket shell is BSA (English thread) between 68mm and 73mm wide, this bottom bracket installs without any issue. It is not a press-fit design.

Complete Groupset Bundle

SUMC SX12 Chain — 12-Speed

Sized and speed-matched to the cassette below, so there's no separate chain compatibility chart to cross-reference.

SUMC SX12 12-speed chain

SUMC SX12 — 126-Link 12-Speed Chain

A dedicated 12-speed chain built with SUMC's double-X outer plate profile for smoother shifts under load and a slight friction reduction over a generic chain. Supplied at 126 links (standard length, trim to fit your frame during installation) and finished in silver to match the rest of the drivetrain hardware.

Speed

12-Speed

Shimano / SRAM / Campagnolo compatible

Links

126

Weight

266.8g

Finish

Silver

Double-X outer plate design

Built for Cleaner, Quieter 12-Speed Shifts

The double-X outer plate profile improves how the cassette "picks up" the chain on a shift, for more accurate, consistent gear changes across the full 12-speed range.

SUMC SX12 chain link detail
Complete Groupset Bundle

SUNSHINE-SZ 12-Speed Cassette

Precision-cut 12-speed cogs on a standard Shimano HG-compatible driver, 11-45T wide-range.

This Cassette Uses Shimano HG Freehub Bodies

SRAM XD freehub body
SRAM XD
Shimano HG freehub body
SHIMANO HG

HG Driver Only — Not XD/XDR Compatible

This cassette installs on a standard Shimano HG-splined freehub body. It does not fit a SRAM XD or XDR driver. Confirm your rear hub's freehub body before ordering.

SUNSHINE-SZ 12-speed cassette

Each cog is precision-machined for clean, quiet engagement, and the whole cassette is a straightforward drop-in for a standard Shimano HG freehub body — no special driver needed. Gearing is deep-optimized to match the SUMC SX12 chain above for a smooth, precise shifting feel.

Range

11-45T

409% gear ratio spread

Cogs

11-13-15-17-19-21-23-25-28-32-39-45T

12-speed

Weight

462g ± 5g

Chain Compatibility

12-Speed

Braking System

RA7800 Hydraulic Disc Brake Calipers

CNC-machined unibody calipers with 21mm dual ceramic pistons — consistent, powerful braking in all conditions, pre-bled and matched to the levers included in this bundle.

Wheeltop RA7800 hydraulic disc brake caliper

Ceramic Pistons. Unibody CNC Body.

The RA7800 caliper body is machined from a single aluminum block — no seams, no flex under hard braking. Twin 21mm ceramic pistons deliver excellent heat resistance and a consistent bite point across long descents. A unidirectional oil circuit ensures smooth, progressive lever feel from light modulation through to full stop. Compatible with 140mm and 160mm rotors.

Shimano Pad Compatible

Compatible with Shimano L04C, L05A, L04A, BR-RX810, and IIPRO-GLYS brake pads — widely available worldwide and easy to source at any bike shop.

Flat Mount. Pre-Bled. Ready to Ride.

Flat mount only — the standard on modern gravel frames. Hoses are pre-cut and pre-bled from the factory: 900mm for the front, 1,550mm for the rear. Unbox, install, ride. The mineral oil system is non-corrosive and easy to maintain at home.

Front Weight

135 ± 10g

CNC unibody aluminum

Rear Weight

170 ± 10g

CNC unibody aluminum

Rotor Size

140 / 160mm

Flat mount only

Fluid

Mineral Oil

Non-corrosive, stable feel

RA7800 caliper detail — ceramic pistons and flat mount
WHEELTOP RA7800 mineral oil hydraulic brake fluid

Mineral Oil — Shimano Compatible

The hydraulic system runs on mineral oil and is compatible with Shimano brake fluid — easy to source, easy to maintain, non-corrosive to seals.

Smart Control

Full Control from Your Phone

Download the WHEELTOP app to pair, calibrate, and monitor your groupset — all from your handlebars.

WHEELTOP app main screen

Everything You Need, Right in the App

Install the WHEELTOP app on iOS or Android. Connect over Bluetooth, and you have instant access to gear position, battery level, riding data, firmware updates, and per-gear fine adjustment — all in one place.

Live Gear & Battery Status

Real-time gear position and remaining battery displayed at a glance

Battery & Shift Count

See remaining charge and total shift cycles at a glance

OTA Firmware Updates

Performance improvements pushed wirelessly — no cables or tools needed

WHEELTOP app Standard and Racing Mode

Two Riding Modes. One Tap to Switch.

Switch between Standard and Racing mode directly in the app. Each mode is tuned for a different riding style — no tools, no hassle.

Standard Mode

Auto-sleep when idle. Lower power draw, longer battery life. Perfect for long days in the saddle.

Racing Mode

Always-on, maximum responsiveness. Boosted signal for noise-resistant shifting under pressure.

WHEELTOP app calibration screen

Pair, Calibrate, Fine-Tune — All in the App

The derailleur ships already paired and set to 12-speed, so all that's left is waking it up, connecting to the WHEELTOP app, running initial position calibration, and micro-adjusting each individual gear. No limit screws to guess at — just tap and confirm.

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.

Wireless Electronic Complete Groupset Bundle 1x12 Speed Hydraulic Disc Brake Flat Mount RA7800 Calipers EVOSID SL1 DUB Crankset SUMC SX12 Chain SUNSHINE-SZ 12-Speed Cassette App-Customizable Bluetooth + ANT+ 1-Year Official Warranty
7
Core drivetrain parts, one box
12-Speed
Cassette, chain & shifting matched
20,000+
Shifts per RD charge
BLE+ANT+
Dual-protocol wireless
Technical Details

Specifications

Full technical breakdown of every part included in this bundle.

Brand
WHEELTOP (shifting & calipers) · EVOSID (crankset) · SUNSHINE-SZ (cassette) · SUMC (chain)
Model
EDS GeX Disc Brake Wireless Groupset Bundle — 1x12
Suitable For
Gravel bikes, road bikes, drop-bar bicycles — flat mount disc brake frames only, threaded BSA bottom bracket shell 68-73mm wide
Speed
12-Speed (pre-configured before shipping)
Chain
SUMC SX12, 12-speed, 126 links, 266.8g
Cassette
SUNSHINE-SZ, 12-speed (Shimano HG driver), 11-45T (11-13-15-17-19-21-23-25-28-32-39-45T), 462g ± 5g
Crankset
EVOSID SL1, forged & CNC-machined crank arm, 165/170mm, DUB 28.99mm spindle, 3-bolt direct-mount chainring — 40/42T (12-speed optimized profile), threaded BB included
Brake Type
Hydraulic · Mineral oil · Flat mount · 140mm or 160mm rotor
Caliper Pistons
21mm dual ceramic pistons · CNC unibody aluminum
Pad Compatibility
Shimano L04C / L05A / L04A / BR-RX810 / IIPRO-GLYS
Hose Length
Front 900mm · Rear 1,550mm
Wireless Protocol
Bluetooth + ANT+ — pairs with cycling computers, displays current gear position and battery level
Charging Port
Pogopin magnetic connector
Shifter Battery
CR2032 button cell (tool-free replacement)
Lever Reach
8mm adjustment range · Aluminum or carbon fiber lever
Warranty
WHEELTOP Official 1-Year Quality Warranty (electronic shifting components)
Package Contents

What's in the Box

This bundle includes the full parts list below.

×1

EDS GeX Electronic Rear Derailleur

×2

Hydraulic Brake-Shifter Levers (Left + Right)

×2

RA7800 Brake Calipers (Front + Rear)

×2

Hydraulic Oil Hoses (900mm front / 1,550mm rear)

×1

EVOSID SL1 12-Speed DUB Crankset (Single Chainring)

×1

EVOSID BC1.37"×24T Threaded Bottom Bracket

×1

SUMC SX12 12-Speed Chain (126 links)

×1

SUNSHINE-SZ 12-Speed Cassette (11-45T)

×1

Pogopin Magnetic Charging Cable

Included

CR2032 Button Batteries (pre-installed in shifters)

×1

User Card (scan QR code for digital manual)

Before You Order

Compatibility & Buyer Notes

Please review the following before purchasing to ensure correct fitment.

Threaded Bottom Bracket Shell Required

The included crankset uses a BC1.37"×24T threaded (BSA/English) bottom bracket, 68-73mm wide. It is not a press-fit design — confirm your frame has a threaded BSA bottom bracket shell before ordering.

Ships Pre-Set to 12-Speed

The cassette, chain, and crankset in this bundle are all matched for a 12-speed drivetrain, and the derailleur is already configured to 12-speed before it leaves our warehouse — no app setup required for speed count.

Cassette Requires a Shimano HG Freehub Body

The included cassette installs on a standard Shimano HG-splined freehub body. It is not compatible with a SRAM XD or XDR driver. Check your rear hub before ordering.

Flat Mount Frames Only

The RA7800 calipers included in this bundle are flat mount only — not compatible with post-mount frames. Rotor must be 140mm or 160mm. If you ride a rim-brake frame, please see our separate rim brake bundle listing.

1x Drivetrain Only

Designed for single-chainring setups only. Not compatible with double or triple chainring systems.

Already Paired — Just Wake It Up

The derailleur is already paired and powered down for shipping. After installation, simply wake it up and connect to the WHEELTOP app to run gear calibration — no re-pairing needed. The app is free on iOS and Android.

Chain Needs Trimming to Fit

The chain should be sized to your specific chainring/cassette/frame combination during installation using a chain tool.

Our Service Promise

Why Choose Aoeagle

More than just a groupset — every order comes with the Aoeagle difference.

Aoeagle WHEELTOP 2025 Emerging Partner of the Year

Authorized WHEELTOP Partner

As an official WHEELTOP authorized partner and 2025 Emerging Partner of the Year recipient, every product is 100% genuine, sourced directly from the factory. 1-year official warranty, hassle-free aftercare included.

Pre-shipment inspection and pairing

Pre-Shipment Quality Check

Before every unit leaves our warehouse, our team thoroughly inspects, pairs, and tests each device to confirm it's working perfectly — no defects, no glitches, no quality issues. Your groupset arrives ready to install.

Aoeagle expert WHEELTOP installation and support

Expert Tech Support

Unlike most sellers, our team knows every WHEELTOP model inside out — years of hands-on installation and tuning. App pairing, shifting calibration, any question — just reach out.

Thank you for visiting our listing. If you have any questions before purchasing, please send us a message through eBay and we'll respond within 24 hours.

FAQ
What cassette speeds is the WHEELTOP EDS GeX compatible with?

The WHEELTOP EDS GeX Wireless Electronic Groupset is designed for 1x12-speed drivetrains and is compatible with both 11-speed and 12-speed cassettes—check the product page for exact cassette brand compatibility. It works seamlessly with standard gravel bike frames and chain brands, making it a versatile upgrade for modern disc brake gravel bikes.

How difficult is it to install the WHEELTOP EDS GeX derailleur, and what tools do I need?

Installation requires basic mechanical skills and standard tools: Allen keys (hex wrenches), screwdrivers, and a 2mm hex key for battery access. Most riders can complete the installation in 1–2 hours, though we recommend professional installation if you're unfamiliar with electronic groupset setup to ensure proper calibration and derailleur alignment.

How long does the WHEELTOP EDS GeX battery last, and how do I charge it?

The WHEELTOP EDS GeX delivers approximately 24,000 shifts per charge, translating to 60+ hours of typical riding on a single charge. Charging uses a proprietary magnetic charging cable (NOT USB-C)—simply attach the magnetic tip to the derailleur port for a full charge in ~2 hours, and the OX2.0 battery is user-replaceable by removing 4 screws with a 2mm hex key.

How do I pair and calibrate the WHEELTOP EDS GeX with my bike computer or smartphone?

The WHEELTOP EDS GeX connects via ANT+ and Bluetooth to the WHEELTOP app, Garmin, and Wahoo devices. Download the WHEELTOP app, enable Bluetooth on your device, and follow the pairing wizard to connect your derailleur; the app also handles firmware updates and real-time shift diagnostics to keep your groupset optimized.

How does the WHEELTOP EDS GeX compare to Shimano Di2 or SRAM AXS in terms of price and features?

At ~$569, the WHEELTOP EDS GeX undercuts both Shimano Di2 and SRAM AXS by hundreds of dollars while delivering dual-protocol connectivity (ANT+ and Bluetooth), 24,000 shifts per charge, and user-replaceable batteries—features that rival or exceed premium competitors without the premium price tag. You get professional-grade electronic shifting optimized for gravel riding at a fraction of the cost.

Is the WHEELTOP EDS GeX waterproof for all-weather gravel riding?

Yes—the WHEELTOP EDS GeX carries an IP67 waterproof rating, meaning it's fully sealed against dust and can withstand submersion in up to 1 meter of water for 30 minutes. This makes it ideal for muddy, wet gravel conditions, creek crossings, and year-round riding without worry of water damage to the electronics.

Where can I buy the WHEELTOP EDS GeX, and what warranty coverage is included?

The WHEELTOP EDS GeX is available exclusively on Aoeagle's eBay store with worldwide shipping and full manufacturer warranty coverage—ensuring you get authentic product support and reliable delivery regardless of location. Visit Aoeagle's eBay store today to order your WHEELTOP EDS GeX and upgrade to wireless electronic shifting.

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