Support
We're here to assist you every step of the way.
Worry-Free After-Sales Service
Frequently Asked Questions
General Questions
Our C8 E-Bike
Payment & Shipment
Assemble my Tezeus
Accessories
Tezeus App
Maintenance & Repair
How do I order online?
What is the return policy?
We want you to be completely satisfied with your purchase, so we accept returns on all items within 14 days of the purchase date. For more details, please refer to our Return or Exchange Policy page.
How do I track my order?
Once your order has shipped, you will receive a tracking number via email. You can use this number to track your order on the carrier's website.
Can I change or cancel my order?
We strive to process orders promptly. Should you need to change or cancel your order, please reach out to our customer service team via support@tezeus.cn at your earliest convenience. Please provide us with your order ID, your name and the email address you used to place your order. Please note that an order modification is only possible before shipping.
Is there a benefit if I refer my friends to buy a Tezeus ebike?
Discover a win-win opportunity by referring friends to us. Contact us now to learn about our exclusive referral rewards at support@tezeus.cn.
Have a try for Tezeus
Where can I have a test ride for Tezeus ebikes?
Please visit our Service Center page to find a store near you and book a test ride with the store.
How to lease a Tezeus ebike?
Please visit our Leasing page to learn more.
About the C8
Are there other sizes of the C8? Will I fit on the ebike?
Our C8 model is currently only available in one size. The minimum height of the saddle to the ground is 90cm.
The recommended rider height is 165-195cm/( 5'5"~6'5").
What is the maximum load of the C8?
The maximum load of the C8 is 110 kg.
How do I use the Boost function
Activation: To activate the Boost function, you need to be in mode 1/2/3. Then press and hold the mode ring for 3 seconds.
Duration: The Boost function will be active for 15 seconds once initiated.
Deactivation: If you need to exit Boost mode before the 15 seconds are up, simply flick the mode ring, and you'll be out of the Boost mode.
What does walking mode mean?
If you need to get off the bike to push it, such as when encountering complex road conditions or going uphill, please hold the mode button on the left of the handlebars (please set the power mode to walking (0) first), the motor will provide the appropriate assistance power to help you pass the current section.
What is the maximum speed of the ebike?
The max speed of the EU version is 25km/h (15mph), and the US version is 32km/h (20mph). The motor assistance will cease once the specified maximum speed is reached. You can break the speed limit by increasing your pedaling frequency. This is allowed by regulations.
How much force can the touch screen withstand? And what is the waterproof level?
Our touchscreen uses Corning Gorilla Glass. The touch screen surface glass has a scratch resistance of Mohs hardness level 6H. The waterproof level is IP6.5.
What's the working principle of internal gear hub?
Whether it is the original version or the version with an internal gear hub installed, the C8 has 4 power modes. This means that you can control the motor power through the shift button on the left side of the handlebar. In "Power 0" mode, the motor remains inactive, allowing you to ride the C8 like a conventional bicycle. To engage motor assistance, simply press and hold the shift button to access the desired power level. Equipped with an internally geared hub, the C8 operates similarly to a traditional rear derailleur, automatically adjusting its gearing based on your riding speed without requiring any specialized maintenance.
Is it possible to put the C8 on my car?
Yes, the C8 can be used with different types of racks. The C8 weighs between 15 and 18 kg. Please check the maximum weight of the rack you purchase.
Which supplier is the motor from?
The internal mid-motor is self-developed by Tezeus.
Can the C8 offer any assistance when cycling uphill, and if so, what is the steepest slope it can manage?
The C8 can provide effective assistance within a slope of 15%.
Can I shift gears when there is no power?
The internal gear hub is purely mechanical, whether the battery is charged or not does not affect gear changes.
Can I adjust the gear hub manually?
Yes. Please follow the instruction guide to manually adjust the gear hub.
Payment
What should I do if my payment failed?
If you are unable to make a successful payment, please follow the steps below:
- Check if your card has sufficient funds;
- Check your internet connection and refresh the page;
- Contact our online customer service to help you find out the reason.
Which payment methods does Tezeus accept?
We accept all major credit cards, debit cards, PayPal, Apple Pay, Google Pay, Shop Pay, Klarna.
How do I get an invoice for my order?
Please kindly contact us at customers@tezeus.cn and provide us with your order number. Our team will get back to you as soon as possible.
Shipment
Will all the products be shipped in one parcel?
To ensure that all orders arrive on time, we sometimes send accessories separately.
Assemble my C8
How do I assemble my C8 after receiving it?
The C8 electric bike is 85% assembled. Here is the detailed assembly video for you. You can also find installation instructions in the attached user manual.
How can I install my C8 accessories?
You can find instructions for your C8 accessories in the installation video.
Accessories and replacement
What is the applicable tire size?
If mudguards are installed, only the original 700*35C can be used. If not, it can be compatible with 40C.
Are the pedals on the Tezeus replaceable?
Yes. Tezeus e-bike uses standard bike pedals which are replaceable.
What is the diameter of the handlebar (for installing the phone holder)?
The diameter of the handlebar ranges from 25.5mm at the screen end to 22.5mm.
Is the handlebar height adjustable? What is the width of the handlebar?
The C8 handlebar height can not be adjusted. The width is 700mm±5mm.
What is the seat tube diameter?
The seat tube diameter is 27.2mm.
What is the maximum load of the rear rack?
The maximum load of the rear rack is 25kg.
What is the belt replacement size?
For the single-speed version, choose the 11M-118T belt size.
For the auto internal 3-speed version, chooese the 11M-115T belt size.
App Binding
Where can I download the App?
For iOS, you can simply to go to the App Store, search for "Tezeus" and download the App.
Our Android app is currently still under review by Google Play. For now, you can download an installation package from our webiste that can be installed directly on your phone.
How to bind the App to my ebike?
Download the Tezeus App and register your account. Scan the QR code and follow the instructions displayed on your ebike's screen to bind the App to your ebike.
How to update over the air (OTA)?
There are 2 ways to upgrade firmware.
A. Automatic upgrade through the 4G network.
B. Upgrade via App Bluetooth transmission.
Maintenance of my Tezeus
What is the belt maintenance and replacement frequency?
For optimal performance and safety, regularly inspect and maintain the belt. Replace it after 30,000 kilometers of use or every five years.
