WHEELTOP EDS TX 1x11 Wireless Electronic Full Groupset Aero Carbon Rim Brake

Carbon Fiber Hollow Oversized Pulley Cage

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. The 12-tooth oversized pulley wheels are hollow and run on ceramic bearings in a carbon fiber cage (more on why that matters below). Charges through a magnetic Pogopin connector — snap it on, no port covers, no corrosion.

Pre-Matched to This Bundle's 11-Speed Cassette

After pairing, set the EDS TX speed count to 11 in the WHEELTOP app and calibrate — then you're ready to ride.

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 pulleys are hollow and run on ceramic bearings, mounted on a carbon fiber cage.

Carbon Fiber Body. Rim Brake Compatible.

Each TX shift lever unifies electronic gear control with a mechanical rim brake in one ergonomic lever body. Shift up or down with a button press — the derailleur responds with zero cable lag. The levers pair with the MEROCA calipers included in this bundle via standard caliper cable pull — no hydraulic lines to bleed, just cleaner cockpit routing and instant gear response.

Forged Arm, 3-Bolt Direct-Mount Ring

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. The chainring is a separate 7075 aerospace-grade aluminum alloy piece, using a 3-bolt direct-mount interface (T25 Torx bolts). Runs on a SRAM DUB-standard 28.99mm spindle. Available in black or silver.

Spider-Web Pattern, Milled for a Reason

The chainring face is CNC-milled into a radiating spider-web pattern rather than left as a flat disc — removing material where it isn't structurally needed cuts weight while the ribbed pattern reinforces the areas that carry pedaling load. It's a look you'd normally only find on higher-end race cranksets.

46T / 48T / 50T

Three chainring sizes to choose from — a smaller ring for more manageable gearing, a larger ring for a taller top-end on flatter routes. The closed-disc profile also keeps loose clothing and cables away from the chainring.

Fewer Bolts, Faster Swaps

Just 3 T25 Torx bolts hold the chainring to the spider — the factory quotes roughly 40% faster installation than a traditional multi-bolt design, so swapping between the 46/48/50T options takes minutes, not a full workshop session.

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.

Semi-Hollow Plates. Gold & Silver Finish.

The SUMC S11L is a dedicated 11-speed chain with semi-hollow plates in a gold and silver finish, compatible with Shimano, SRAM and Campagnolo 11-speed drivetrains. A quick link is included. Supplied at 116 links — trim to fit your frame during installation.

11-28T

11-12-13-14-15-17-19-21-23-25-28T · 307.6g

Tight steps between gears for flat-to-rolling roads where you want to hold a precise cadence.

11-32T

11-12-13-15-17-19-21-23-25-28-32T · 365g

A well-rounded middle ground — enough range for rolling terrain without giving up too much on the flats.

11-34T

11-12-13-15-17-19-21-23-25-28-34T · 377g

A genuine bail-out gear for hillier routes or riders who'd rather spin than grind — the natural pick for a 1X single-chainring build.

Aluminum Alloy Body. Dual-Pivot Balance.

The BR-R7000 caliper body is aluminum alloy, lightweight with high rigidity — the arm doesn't flex or deform under hard braking, so lever force translates directly into stopping power. A dual-pivot balanced structure keeps both brake arms applying force in sync, transmitting braking power evenly with no fishtailing under a hard stop and no fade on long descents.

High-Rebound Return Spring

A high-rebound spring keeps lever response and return fast for a direct, controlled feel — fine-tune brake force to reduce lock-up and rim-rub risk on technical descents.

Adjustable Pads. Anti-Squeal Compound.

Each brake pad is adjustable — 47mm of range at the top, 70mm at the bottom — for precise alignment to the rim's braking surface and easy compensation as the pads wear. The pad compound itself is a low-noise, wear-resistant formula with a widened mud/sand channel, cutting down on the high-frequency resonance that causes brake squeal.

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.

11

Speed, 1X single chainring

46/48/50T

Chainring options

11-34T

Widest cassette option

BLE+ANT+

Dual-protocol wireless

Brand

WHEELTOP (shifting) · EVOSID (crankset) · SUMC (chain) · SUNSHINE-SZ (cassette) · MEROCA (calipers)

Model

EDS TX Wireless Electronic Rim Brake 1x11 Full Groupset Bundle

Application

Road bikes and drop-bar bicycles with a threaded BSA (68-73mm) bottom bracket shell — rim brake frames only

Drivetrain Configuration

1X (single chainring) — no front derailleur

Speed

11-Speed

Rear Derailleur Pulley

12T hollow oversized pulley wheels with ceramic bearings on a carbon fiber cage

Rear Derailleur Weight

340g

Wireless Protocol

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

Battery

Rear derailleur 800mAh, 8.4V, Pogopin magnetic charging · Shifters CR2032 button cell

Lever Material

Carbon Fiber, rim brake cable-pull

Crankset

EVOSID SL1, forged & CNC-machined crank arm, 165/170mm, DUB 28.99mm spindle, 3-bolt direct-mount closed chainring — 46/48/50T, threaded BB included

Bottom Bracket

EVOSID BC1.37"×24T threaded (BSA/English), 68-73mm shell width, spacers included

Chain

SUMC S11L, 11-speed, semi-hollow, 116 links, approx. 253.6g, quick link included

Cassette

SUNSHINE-SZ 11-Speed — 11-28T (307.6g) · 11-32T (365g) · 11-34T (377g), Shimano HG freehub

Brake Calipers

MEROCA BR-R7000, aluminum alloy dual-pivot, front 200g / rear 194g, adjustable pads (47mm/70mm range)

Warranty

WHEELTOP Official 1-Year Quality Warranty

1X (Single Chainring) — No Front Derailleur

Not compatible with double or triple chainring setups.

This Listing is for Rim Brake Only

The levers included are rim brake levers and the calipers are rim brake calipers — compatible with standard caliper brake cable pull. If you ride a disc-brake frame, please see our separate disc brake listing. Rim and disc brake components are not interchangeable.

Confirm Your Bottom Bracket Shell

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.

Choose the Right Chainring & Cassette

Pick a chainring (46/48/50T) and cassette range (11-28T/11-32T/11-34T) that suit your terrain and fitness — a smaller chainring paired with a wider cassette gives more climbing gear, a larger chainring with a tighter cassette gives a taller top-end.

App Pairing Required Before First Ride

After installation, pair the rear derailleur to the WHEELTOP app over BLE and run gear calibration. 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.