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Contact Us

Email us

You can expect a reply within 24-48 hours.

For Pre-sale inquiry:

For After-sale and Tech support:

Social media

C3STROM representatives are
available on the following platforms.

LA Support Center Adress:

18247 Parthenia St.
Northridge, CA 91325

Warehouse Address:​

4250 Shirley Ave
El Monte, CA 91731

We look forward to any feedback from you about our services or our product.
We value your comments and strive to improve our products and services.
Reach out to us at

How can we help?

Got a question? We have a handy troubleshooting tool to help diagnose any issue.

Feel free to contact us for additional support or if you just wanna rap.

We currently only sell our products to customers in the United States and Canada. Please note that we do not sell to countries that prohibit the sale of our products, such as Hong Kong. Please feel free to contact us if you have any further questions.


Our stylish, extremely speedable ASTRO ebikes are sure-fire hits for everyone on your list.