Geeko-Rear is the right ebike kit of cycling enthusiasts for daily commute, long distance riding, or serious mountain biking.
Geeko-Rear is a revolutionary and innovative eBike conversion kit consisting of only two parts, Geeko motor and Geeko bottle.
- Geeko rear motor integrates the 100G patented smart cassette sensor, which can detect cadence and gear ratio at the same time and ensuring accurate assist power all the time.
- Geeko bottle is designed based on exactly bottle appearance, it perfectly integrates battery, display and controller, and the 3-in-1 Geeko bottle makes the Geeko kit installed on the bicycle very natural, neat and beautiful.
Geeko Rear Motor
- The optimized motor cable outlet can perfectly protect the motor cable from breaking when the bicycle falls and hits the motor cable.
- Well-designed motor, real 135MM dropout size for both 250W and 350W 7-10S cassette motor(most motors claim to be 135MM, but actually 142MM-145MM), You can easily mount Geeko motor to your bike frame without having to forcefully open the bike’s rear fork.
- BLDC geared motor, with durable and reliable gears. The gear ratio is 4.33, which ensures that the motor can output a maximum torque of 48NM (500W motor).
- Please note that currently Geeko Motor do not support thru-axle bike.
- The patented smart cassette sensor is mounted in the motor, that means you don’t need any cadence sensor in place of the bottom bracket. (Such sensors are prone to failure).
- The smart cassette sensor can detect not only cadence but also gear ratios. Whether you increase or decrease the pedal cadence, or switch bicycle gears, it can immediately detect and notify the controller to adjust the assist power. This assures that you can get comfortable assist power all the time. (The cadence sensor has no way to detect the gear ratio).
Bionic torque power is an electric power distribution and control system independently developed by 100G.
- The assist power is more linear and natural, especially for multi-gear bikes.
- Maximum speed can be reached in every level.
- The difference between the levels is the boost power of motor, (in other systems, the difference between the levels is the speed).
- The maximum speed and maximum current of each level can be set independently.
- Auto uphill enhancement, which means it automatically increases power when going uphill.
- More power saving, the cruising range is 50% higher than other power assist systems. According to the test, using our system, the 10AH battery can last 130 kilometers, and the 15AH battery can last 200 kilometers.
Geeko Bottle
4 Bottles x 4 Colors
Bottle Bracket
Intelligent Display
The intelligent display is a bottle cap design that integrates perfectly with the bottle battery. It has a digital screen with 3 buttons and with Bluetooth 5.0 inside. The display is the most traditional HMI for electric bicycles. With the display, you can:
- Check battery level
- View current equipment
- View error codes. If the system fails, the error code will flash, which is very useful for quickly locating and troubleshooting.
- View controller connection status
- View APP connection status
With a combination of 3 buttons you can:
- Power on/off system
- Adjust 0-5 levels
- Set system parameters, such as wheel diameter, speed limit, etc.
APP
Using our free app will be a cool experience and you will get richer UI interactions. Our APP is simple and easy to use, with only simple + and – buttons, the elderly and children can also use it without any difficulty. The APP is always Ready-to-Use, no additional settings are required. Just open APP, and ride, it should be that simple.
Smartphone APP as an extended HMI, it’s not mandatory, but it is great to have. With the app, you will be able to:
- View real time speed
- View battery power
- View ride data
- Adjust 0-5 levels
- Check system failures
- Modify system parameters
- Upgrade controller firmware
Controller
- Controller is hidden inside a aluminum case with heat dissipation blade at the bottom of the bracket.
- Real-time temperature monitor allows the controller to gradually reduce power output when the temperature is too high. This temperature protection ensures long-term reliable work of the controller.
- The controller circuit board is fully potted with thermally conductive adhesive, ensure IPX7 waterproof level of controller, which means that the controller can work in any rainy weather.
Introduction Videos
Geeko-Rear Introduction
Geeko-Rear Unboxing
Geeko-Rear Installation
Geeko-Rear Operation
Independent Reviews
EMOBILIST--In 60Minuten vom BIO- zum EBIKE mit dem 100G Geeko Umbausatz
Paul's Views & Reviews--Swytch vs. 100G - which is the best e-bike conversion kit?
MobiliTest--100g tech , Un Kit pour electrifier son vélo VRAIMENT à la portée de TOUS ! (TUTO)
Zero Pionier--vom Fahrrad zum eBike : 100G.tech Geeko Umbausatz "REAR" / no Pendix & Bafang
"Geeko" Anywhere on Your Bike
With 4 types of Geeko Adapters, you can fix Geeko Bottle anywhere on your bike.
Accessories You May Need
Specifications & Manuals
Policies
Shipping
Shipping time / Shipping cost
/ Order tracking / VAT & Customs
Warranty & Return
Warranty / 7-day return policy
/ Damages and issues, etc.
Flexible Customisations
FAQ
Geeko kit is designed to fit most bikes. Simply put, as long as your bike is not thru axle, Geeko kit will fit.
Specifically, the Geeko-Rear kit and the Geeko-Front kit have some additional special requirements.
Geeko-Rear
Geeko-Rear requires a rear fork spacing of 135mm and a slot width of 10mm, as shown below.
Also we provides motor customisation service for fork spacing 130MM if your bike is a rim brake roadbike.
Geeko-Front
Geeko-Front requires a fork spacing of 100mm and a slot width of 10mm; and space is required at the pedal bottom bracket to mount the sensor, as shown below.
We also provide motor customisation service if your have a folding bike with fork spacing 80MM/74MM. There is also a special version fork slot width 8MM for Brompton bikes.
Geeko motor has a clutch inside. When the bike glides forward, the motor hub is rotating while the magnet inside is stationary, the motor has no magnetic resistance at all and glides very smoothly, just like a normal bike, you can ride it easily.
Yes. Simple is one of the product philosophies of Geeko kit. When we designed Geeko, we wanted Geeko to always be ready-to-go. APP is not mandatory, we believe everyone can enjoy a pure and simple ride without APP. But if you like, you can use it.
In most case wheel size should be written on the side of your tyre. It will look like this: 700c x 38, or 26” x 1.95.
Yes, by using the tools we provide, you can usually keep your own cassettes.
Geeko-Rear kit do not include cassette by default. You can also purchase and pre-assemble cassette with the link below.
But if your bike is 7S or 12S cassette, we strongly recommend that you purchase and pre-assemble cassette to ensure compatibility.
Most of 7S is flywheel, which means you need to replace it with a 7S cassette.
For 7S and 12S cassette, some special conversion fittings are required for installation. Therefore, to avoid compatibility issues, we strongly recommend purchasing and pre-assemble cassette via the link below.
Yes, Geeko kit is compatible with rim brakes and disc brakes.
Geeko kit do not include disc by default. Normally, you can keep your disc if it is 6 screwed on.
If you need a new disc, or if your disc is not 6 screw-on, you can purchase and pre-install disc via the following link:
The price already includes customs duties and VAT, no additional charges.
Shipping is a door-to-door service and all you have to do is wait at home to receive your goods.
Shipping is a door-to-door service and usually takes 20-25 days from China to your home if you are in the EU and 25-30 days from China to your home if you are in the USA.
We have dealers in Germany, France, Poland and the USA, you can email us for their contact details.
If the Geeko model you need is not in stock at our dealers, you can buy it on our website. The usual shipping time is 20-25 days. Shipping is a door-to-door service and all you have to do is wait at home to receive the goods.
Please check below link:
Yes, with bottle cage adapters you can mount Geeko bottle anywhere on your bike.
Click for details:
Yes, it will definitely help on long rides. Click link below to buy:
We believe that the Geeko kit with both bottle cap display and smartphone APP is the perfect choice for you. But if you prefer a traditional handlebar display, we can customise a traditional Geeko kit with a handlebar display for you.
Click link below for details:
When you receive your Geeko kit, all parameters are already set to their optimal state. If you need to set them yourself, please contact sales@100g.tech.
It is important to note that setting the parameters yourself may result in Geeko kit not working properly and pose an unnecessary regulatory risk.
EU Warehouse & Accessories Pre-installation
Your order may include Geeko kit (Geeko-Front/Rear/Dual) and other accessories(cassette, brake disc, light, light cable, additional throttle, etc.).
If Geeko kit in your order is in EU warehouse:
1. Geeko kit in your order will be shipped in 2 parcels from EU warehouse, shipping time 3-7 days.(One parcel with battery and bracket controller, the other parcel the rest of the Geeko kit) 2. Other accessories in your order will be shipped separately in 1 parcel from China factory by air, shipping time 8-12 days. Note that in this case you will need to install some accessories yourself. Don't worry, the installation of the accessories is very simple, we will provide video instructions.
If Geeko kit in your order is NOT in EU warehouse:
Your order will be shipped in one parcel from China factory, and the accessories will come pre-installed. Normally shipping time 25-30 days. Click here for more details.
david –
Hello, I have received your 350 watt rear wheel kit and 7.8 mAh premium battery and I am very happy with it, the kit is very nice and easy to install!
steliostoutou (verified owner) –
This ebike kit can go up to 32km/h, but you can always twek it to 25!
It’s the most stealth solution I’ve seen out there and it only added 4kg to my total bicycle weight!
steliostoutou (verified owner) –
This is the most stealth ebike kit I’ve seen on the internet. The bottle design is very stealth, people don’t get how this is an ebike. The 250w kit can reach 32km/h, but you can tweak the top speed to 25km/h, which is awesome. I totally recommend it!
Georges Salle –
I really like your 100g-tech Geeko kit. The throttle is really useful: we have some very steep streets here Steep streets, so I use the throttle when I walk So I use the throttle to push the bike while I walk with no effort at all, it’s just perfect!
Stefan Holzer –
My questions to you have always been answered promptly and competently. This is very commendable.
I converted my wife’s Cannondale MTB with a conversion kit.
The conversion went off without a hitch. In the meantime I have ridden about 750km. And made some attempts to adjust the parameters.
I’m really excited. The conversion kit is absolutely fantastic!
We have a lot of climbs and uphills, and the support can be adjusted very well.
Depending on the settings, the motor will discreetly provide support in the background without pushing too hard.
At level 1 – 2, with a 15AH battery, we can cover about 100 kilometres in hilly terrain.
With stronger support, the kilometres are reduced accordingly.
The bike is perfect for riding. The extra weight from the conversion kit is not noticeable.
The bike rides like a normal bike even without assistance.
There is no braking (just like a mid-engine). The rear wheel drive hub runs as smoothly as a regular standard hub!
The total weight of the bike is far less than a mid-engine mountain bike.
I can recommend you and your conversion kits without reservation!
Volker Preißler –
Since installing the kit, I’ve ridden a few kilometers on the bike and am very satisfied so far. The system moves very well. I hope it stays that way in the future.
Thank you for the service!
Stefan Hamberger –
Perfekt,alles passt. Komplettrad mit Bremsscheibe und Ritzelpaket. Einfach montieren und losfahren.
Ute Schneider –
Initially this worked really well but after a while I realised it’s just a bit heavy for what I need to use it for.
Tomaz (verified owner) –
Top product, very simple and fits my bike perfectly , powerful assistance
Jörg Cherubim (verified owner) –
Habe mir nach langer Überlegung das Umrüstkit Prime250R mit vormontierter Kassette bestellt. Lieferung dauerte ca. 4 Wochen. Es kam gut verpackt an. Für die gesamte Montage (Pegasus Premium Disc XL) benötigte ich allein ca. 50 Minuten inklusive Bremsscheiben wechsel von der alten auf die neue Felge. Hier hatte ich erst einen Montagefehler da bei der neuen Felge eine Distanzscheibe für die Bremsscheibe verbaut war. Nach entfernen dieser passte alles einwandfrei. Ich habe nun annähernd 200 Kilometer gefahren. Die Reichweite des Akkus beträgt auf Stufe 2 ca. 60 Kilometer. Ich bin von dem Umrüstkit voll begeistert und kann es nur weiterempfehlen.
Joerg Resch –
Amazing product, very simple and fits my bike perfectly.
Ute Schneider –
After ordering the kit, I found that I needed a light function. And the Geeko team did it. I received the light cables after 2 weeks and it worked fine. Really appreciate their support.
Rudolph Martin –
Ich bin sehr zufrieden mit meinem neuen Geeko Kit, ich hatte bisher viel Spaß.
Hund Joachim –
A great experience to ride my bicycle now, it’s fun! And it makes my daily way to work much easier and faster.
Tyler –
It’s a great little motor to get you up hills while still getting exercise.
Max –
This is the first week that I have used it and I am quite impressed. I will definitely be riding more often now that I have my great Geeko helper installed. Thanks for making a quality product.
Xavier –
Kit came, easy to install on to my MERIDA MTB. Rides great with just the right amount assistance for me. Getting up hills is so much better now.
Willis –
The kit arrived in excellent condition and delivery was faster than expected.
Bert –
Very well engineered and manufactured equipment. Mostly easy to assemble.
Kolt –
Kit was easy to install. Love riding around town and on trails. Great for going up hill, when it’s windy or I’m just plain tired. Recommending to my friends. They also like it much!
Hugo –
Awesome product, brings much riding joy.
Herbert –
Quite impressed with the kit which works as promised. Installation wasn’t too difficult; the instruction video was very helpful.
Felix –
I installed the Kit and I am very excited.
My wife too, so I would order a second Kit for my wife.
Theodore –
After measuring my bike fork I could determine the kit would fit. After delivery, all parts seem quality and fit together well. Exactly what I need.
Baron –
I purchased the kit as a motivation to get back to bike riding and I am really enjoying my rides!
Neville –
Works great on my Specialized hybrid. Perfect for when my old knees need a break.
Maria –
Water bottle-styled battery is a nice design to keep my bike looking like a traditional bike, rather than an e-bike. It comes off easily from its bottle holder while having a lock to secure it when in use. Overall, very straightforward to use and has drastically made my weekly commute much easier and enjoyable, especially when going over hills.
Brian –
Fast delivery and strong package. I like the cap display, unique design.
Karter –
Works well. Very happy with my Geeko.
Kuji –
I purchased Geeko conversion kit for a bike and so far I love it. I am considering purchasing 2 more.