Superb Delivery made in full within timescale Clear instructions for install, took around 2 hours to fit and adjust cables,brakes. Fitted to Giant Roam hybrid cycle ,works very well, rear "... See more
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Review summary
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Based on these reviews
Vers impressive by your E kit I have donne thé first stage to be Just over my leg power My average speed was 3 km over my muscular rides Waiting for a New lighter system with rectangular bettery... See more
Trustworthy, well-packaged, easy to set up. I am happy with the performance. However, if like me you have a racing bike with no suspension, skinny tyres and low weight, the addition of 4 kg makes y... See more
Web site was easy to navigate, the battery sizes where supplied with printable templates so you could check they fit which is very useful and there is wheel options to match the original wheel. The... See more
Company details
Written by the company
100G Smart Tech was founded to bring some lightweight innovations to electric bike and let more people enjoy the fun of e-cycling. 100G is one of the leading manufacturers of complete electric drive systems for eBike and has been developing eBike solutions since 2016.
Contact info
210000, Nanjing, China
- sales@100g.tech
- 100g.tech
4.5
Excellent
500 reviews
Replied to 90% of negative reviews
Typically replies within 24 hours
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
Well packed
Well packed, well explained, always eager to help.
Nothing to complain about.
November 3, 2025
Easy install
Easy install, working well.
Minor suggestion for improving like the need to have higher luminosity for the display during daylight
November 5, 2025
The best ebike kit available on the…
The best ebike kit available on the market. Easy to install, all manuals available and the result is a pure fun. Especially convenient that bottle shaped battery can be separated for charging.
November 4, 2025
Electric bike motor
Great company help to sort a problem i had with my bike kit I was able to fix a problem I had and Iam back up and back on my bike!!!
November 4, 2025
repair and functional issues
quick and competent response in case of technical questions, always eager to help
October 28, 2025
Failed battery after just more than a year and no warranty!
They have not done OK on this one. My battery failed just one or two months after one year of purchase which in Europe market means within warranty. They replied that their purchase conditions are 1 year warranty which is against European law. They just proposed a 20% discount on a new one. This is NOT ok 100G!
October 11, 2025
Reply from 100G
Hello, we feel sorry for the battery defectiveness. According to our warranty policy, the battery is with one year warranty while other parts with two years. For this replaced battery we agree to extend the warranty to two years. And The 20% discount is a special offer made just for you. Normally, if a part is past its warranty period, you would have to repurchase it at full price. We hope you are satisfied with our service and wish you a pleasant ride.
Contact
Whenever I had questions, whether technical or logistical, I always received answers immediately via email.
October 11, 2025
After ready the many positive reviews
After ready the many positive reviews, I decided to purchase the kit for my road bike. Upon delivery, the wheel does not align with the frame and is offset to one side. I had a bike shop align the spokes to make it work. Also, the brake disk rubs on the frame because of the same issue. The axle on the wheel kit is too long on one side, and too short on the other. It's obvious the axle is not manufactured or installed correctly. When I contacted the manufacture regarding this they said I was not eligible for warranty return as the wheel kit had been installed. This can't be true because the axle issue won't allow me to install it. I feel that this company has taken the low road regarding its return policy.
Update: after a few emails and more adjustments, I finally got the wheel kit to work. However, the brake disk is still very close and tends to rub even after installing the washer shims as instructed. I charged my review accordingly.
October 27, 2025
Unprompted review
Reply from 100G
Hello, our engineer has contacted you by email to check the problem. About the disc brake scratch, we show detailed adjustment tips in the installation manual. If the brake disk is still close you could take the washer from the cassette side and add it on the disc brake side to adjust the distance between the fork and disc brake.
We appreciate your fair and objective review. Please feel free to contact us if you have any further questions. Have a pleasant ride!
At the End
Delivery time, packaging, instructions, tools, and installation were all simple and great. The quality of the parts is excellent. The battery is big and heavy, which is expected for this capacity, and it performs really well.
Maybe it could be designed a bit longer and thinner, not only in the bottle shape — just an idea for the future. I also know that, like any battery, the range will never be quite the same as on the very first ride.
Overall, I’m really satisfied. Thanks for everything, and good luck with future improvements!
September 5, 2025
Geeko rear E-bike kit
Excellent and extremely helpful conversation with company. Wasn’t sure exactly what I needed but they sorted out everything. Also fantastic product and quality easy to fit and setup following the manual. Would highly recommend the company and its products.
September 9, 2025
My experience with 100g has been…
My experience with 100g has been excellent there very helpful and prompt. Provide tracking on parcels . And good quality parts and products
September 9, 2025
I need the manual to install…
I need the manual to install everything. I was waiting now for 2 days without response. Normally you are very fast. BR Willi
September 5, 2025
The wait time for the delivery was long.
The wait time for the delivery was over a month, but this was expected for the model I ordered. Nevertheless I was not able to get updates on the deliver once it was dispatched and I think this part could be improved.
I had a technical problem with the motor and a replacement motor will be sent but this will also take over two weeks.
I can say that the product itself is nice at met my expectations at first and the product support is very good. They were able to identify my issue and confirm they would replace the part that failed within hours with live chat.
September 3, 2025
Conversion kit fits very well
Conversion kit fits very well
After a waiting time of about 40 days, I received the conversion kit I ordered.
Basically, everything fit very well, and the conversion worked without any problems. There's very little space between the grip and the brake lever for the throttle, so I had to install the lever backwards.
I haven't been able to test the drive's performance extensively yet, but for now, everything works well.
The cell phone mount looks different than the one pictured in the order, but it works.
August 14, 2025
Easy transaction
August 14, 2025
After waiting a longer time for receiving the 100G, there has been Problems with the Shipping i have gorten
After waiting a longer time for
June 22, 2025
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