Eagor E-Bike Conversion Kit Review: Carbon Wheels for Road Bikes

Introduction

Most e-bike conversion kits are built around commuter frames, which makes the Eagor kit unusual. It is a carbon wheel set intended for road bikes, with a motorized rear wheel, a battery that mounts in place of a bottle cage, and a head unit that can sit on the handlebar or under the stem. The rims are wide and firm, the rim tape comes pre-installed, the freehub uses a Shimano pattern, and the kit includes its own branded rotors.

The promise is appealing: turn a road bike you already own into an assisted bike without buying a second machine. The reality is more complicated. This article covers what the kit does well, what it adds in weight and cost, and one serious fault that appeared during riding.

Who This Kit Is For

The kit is designed for riders who already own a premium road bike and want to add assistance while keeping the bike’s character. Carbon rims, matched front and rear wheels, and an under-stem mounting option all point to high-end and aero road bikes rather than hybrids or commuter frames. Because both wheels match, the bike still looks like a deliberate build once the system is fitted.

It also suits riders whose typical outings run to around two hours or less. Anyone planning long days out at maximum assistance should be realistic about range rather than relying on the highest figure quoted by the manufacturer.

Installation itself is not complicated once the parts are understood. The battery, the head unit and the rear wheel each use a connector that plugs in directly, and the system powered up on the first attempt. The obstacles are compatibility details rather than wiring, and those are covered further down.

Main Strengths

Wheel and Component Quality

The wheelset is the strongest part of the package. The rims feel firm rather than flexy, they are notably wide by modern standards, and the rim tape is fitted neatly from the factory. The Shimano-pattern freehub has a quiet, understated sound. Branded rotors are included, and the finish on the cables and connectors is consistent and tidy, which is not always the case with e-bike hardware.

The mounting hardware shows the same attention to detail. A bracket replaces one of the bottle cages to carry the battery, and the head unit comes with a bar mount as well as an under-stem plate, so a bike with aero handlebars that a standard clamp will not fit can still take the display. The system is also set up for through-axle frames, which is what most current road bikes use.

Ride Feel and Power Delivery

Assistance responds to how hard the pedals are pushed. Light pedal pressure adds a small amount of power, harder efforts bring in more, and the transition feels more refined than a conversion kit usually manages. The motor is quiet enough that a rider alongside would not notice assistance being used without looking down at the rear wheel. Five assistance levels are available, and the top level is genuinely quick.

Rotor compatibility needs a little planning. The wheels accept six-bolt rotors only, so a bike set up with a 140 mm rear rotor may need an adapter and the correct hardware before the wheels go on. Those parts are inexpensive and easy to source.

Things to Consider Before Buying

Range, Weight and Setup

The manufacturer quotes two range figures on its website, 60 km and 150 km. In practice, running the system on level five for the entire ride, the battery lasted 1 hour and 55 minutes and covered 42.2 km with 650 m of elevation, staying switched on during brief stops. The final bar of the battery dropped away quickly, which is typical of e-bike systems, and a flatter route or a lower assistance level would extend range considerably.

Weight is the other consideration. The bike went from 7.94 kg to 11.55 kg, an increase of 3.61 kg, and almost all of it sits at the rear where the motor and battery live. That is noticeable when lifting the bike onto a rack or handling it in a hallway.

There are no printed instructions in the box, so setup relies on the manufacturer’s online documentation. The battery itself carries warnings to use only the specified charger and not to dismantle it or immerse it in water.

The Locked Rear Wheel Issue

When the battery reached zero, the rear wheel locked and would not turn. Disconnecting the battery and the head unit, charging both, refitting the wheel and checking the brake made no difference, and the bike could not be ridden or even pushed home. A small amount of play appeared later, but the wheel stayed locked.

The manufacturer’s response stated that the rear wheel should still rotate normally once the battery is depleted and that riding should feel like a regular bicycle, that the issue had not been encountered before, and that it could be caused by motor damage during international shipping. The company asked for the wheel to be returned and offered to send a replacement motorized rear wheel.

That exchange leaves the kit difficult to recommend at present, especially at a price of just under €2,000 according to the manufacturer’s website. Fitting a kit of this kind also risks affecting the frame warranty, particularly on carbon frames, and that is worth confirming with the bike manufacturer before installation.

Buying Advice

If the wheel-locking fault turns out to be isolated and a replacement unit behaves correctly, the concept still has merit. The wheels are well made, the assistance is smooth and quiet, and a two-hour assisted ride at high power covers what many riders actually do on a road bike.

For now, buyers should weigh the kit carefully. Confirm rotor and axle compatibility before ordering, expect a significant weight increase at the rear, and check the frame warranty position first. A kit that leaves the bike unrideable when the battery runs flat is a real risk on a long ride, and that risk needs to be resolved before this becomes an easy recommendation.

Conclusion

The Eagor conversion kit shows that a road-bike-specific electric wheel set can look and feel convincing: matched carbon rims, tidy hardware, and assistance that responds naturally to pedal input. Range at maximum assistance fell short of the manufacturer’s headline figures but was respectable for a hilly route.

The locked rear wheel after battery depletion is the deciding factor. Until that is explained and fixed, this kit is not something to recommend. Riders who want assistance on an existing road bike should keep an eye on how this develops, because the underlying idea is genuinely appealing.