To expedite your support request and shorten the processing time, please send an email with the required details to our after-sales team at: service@wheeltop.com.

Please ensure your email includes the following information:

Purchase Channel: Please specify where you purchased the product (e.g., Official Website, Amazon, or an authorized dealer).

Order Details: Provide your Order Number or the email address used during purchase. This allows us to verify your warranty status immediately.

Issue Description: Briefly describe the specific problem you are experiencing (e.g., pairing failure, shifting issues, or battery concerns).

Video Evidence: It is essential to attach a clear video demonstrating the malfunction. A video is the most efficient way for our technical team to diagnose the root cause and provides a faster resolution.

After Sending:
Please wait for our response. Our technical support team will review your information and get back to you with a solution as soon as possible.

Please send your app account details (your registered email or mobile phone number)to service@wheeltop.com so we can grant you the necessary permissions.

It uses a dual transmission system that utilizes both Bluetooth and ANT+.

（For EDS TX series）

1. Please note, do not perform the initial calibration when the rear derailleur is not in the smallest cassette. Incorrect actions may cause the rear derailleur to become jammed or other issues.
2. Set the front derailleur to the largest sprocket.
3. Set the rear derailleur to the smallest cog position.
4. Open the WHEELTOP App and select Initial Calibration.
5. Use the "<" or ">" buttons to adjust the RD pulley position until it aligns with the smallest cog.
6. Exit the initial calibration page.

（For EDS GeX and OX series）

1. Please note, do not perform the initial calibration when the rear derailleur is not in the smallest cassette. Incorrect actions may cause the rear derailleur to become jammed or other issues.
2. Set the rear derailleur to the smallest cog position.
3. Open the WHEELTOP App and select Initial Calibration.
4. Use the "<" or ">" buttons to adjust the RD pulley position until it aligns with the smallest cog.
5. Exit the initial calibration page.
   
   

Yes, EDS TX, TT, OX2.0 and GeX can be paired with bike computers.

Regarding the type of hose, needle and olive, we recommend that you purchase Shimano's BH-90 and BH-59 type.

"Lowercase Letters"+"Numbers"