Development & Design

            You need a lot of work to make a good rim.

  • Design is everything. You know better at racing and market. So just send us your rim profile design and your own test requirement, and we can make it happen. And most importantly, both of us need to know our competitor very well, so we can do better!
  • We design the mold construction and structure/lay-up for your rim.
  • We always check every tool of the mold before molding to make sure accurary, solidness and enduro.
  • Carbon fiber prepreg, long strips.

  • Small pieces designed for nipple hole reinforcement.

  • Place carbon fiber on mold directly.

  • Now a carbon rim is born!

  • Use hubs and spokes to build the rim into a wheel with super high tension. Test the stength, check hole angles accuracy and have UCI impact testing.

  • Mount with different tires to check tire fitting and tubeless setting.
  • To make sure the correct internal layups, we cut and burn the rim for analyzing.

  • We are MORE than the above. Come and check it out!




- 2012-05-18 -

Bicycle carbon rim production process

  1. Carbon fiber material and air bladders incoming, we use Toray T700 and T800 carbon fiber material, and a special material air bladders which produces smoother rim walls;
  2. Applying DSC tester to inspect physical properties;
  3. Storing in a refrigerating equipment (-5°C) to maintain the activity of resin;
  4. Prepreg cutting, cutting to desired angles and shapes;
  5. Precise layup & pre-modling, each rim carries its own layup schedule documents which are meticulously by experienced layup workers;
  6. Hot press molding, PC hydraulic molding machines with pressure temperature and time control;
  7. Raw finish rim quality control (QC-1);
  8. Remove the air bladders through the valve hole with a unique process;
  9. Drilling holes in 4D-direction using PC controlled drilling machine;
  10. Quality control (QC-2), check and test;
  11. Smoothing, surface treated by experienced workers;
  12. Painting and decalcomania;
  13. Quality inspection (QC-3), 100% quality inspection and record in database, each carbon rim is given a unique ID number;
  14. Packing, each carbon rim is packed in a tailor-made foam bag;
  15. Delivery.


Dacal & painting

- 2018-05-09 -

Decals and painting.

Carbonal offers customized decal and painting on the carbon rim according to your request, gives a unique look to the wheel.


Graphic design. For custom graphic on rim, please let us know what you like or email us a picture or a rough draft, our designer will help you to finish the graphic.

Decaling. Custom graphics / decals are applied on carbon rim and then covered with a glossy or matte clear coat, this makes the decal more durable, but they are not removable.

Warranty Policy

2023-02-27 (updated)



Carbonal conducts very strict quality controls prior to shipping to our customers worldwide. We stand behind our products with the following warranty:

1. Carbonal warrants its carbon rim (January 1, 2018 onwards) products to be free from manufacturing defects for a period of 5 years after original date of purchase. This warranty only applies to the original owner and is not transferable. Valid proof of purchase, pictures of the defect and the product serial number is required for a warranty claim. Please retain your proof of purchase for any future warranty claims.

2. If any manufacturing defect occurs within 45 days, Carbonal is obligated to replace the product and also pay for the shipping cost. If any manufacturing defect occurs within 46 days to 60 months, Carbonal is obligated to replace the products. The customer would be responsible for the shipping cost.

This warranty does not cover:
1. Normal wear and tear;
2. Any damage caused by accident, misuse, neglect, abuse, or any other fractious reasons;
3. Improper assembly, maintenance, or maintenance by an unauthorized technician.

Crash Replacement Policy:

We understand that accidents and damage can happen (no matter if the damage was your own fault or not), if in case of bad luck, Carbonal supports you by offering replacement product with 15% discount price of products for up to 2 years after your original purchase. The customer would be responsible for the shipping cost.


1.5 Million Liability Insurance Worldwide: