Skip to content


20mm Endcaps, Endcap Kit

Regular price $30.00

Unit price per 

Hub Standard:

Designed with the end-user in mind, our end caps are easy to remove and install as possible, simply pop them in or out without any tools.  The pre-installed o-rings provide just enough friction to hold them securely in place.

  • Select “20mm ISO” to convert a 9x100QR or 15x100TA hub to 20x110TA ISO.
  • Select “20mm Boost” to convert a 15x110TA Boost hub to 20x110TA Boost.

If you are experiencing issues with your Project 321 hubs and you feel you require warranty help, please use the link below to learn more.

Learn more

Close (esc)


Use this popup to embed a mailing list sign up form. Alternatively use it as a simple call to action with a link to a product or a page.

Age verification

By clicking enter you are verifying that you are old enough to consume alcohol.


Phase 1 Navigation

Added to cart