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Chris King ISO AB 110x20mm Boost Axle Cap

Ready To Ship In: 2-5 Days
Ships To: Worldwide
Returns: 60 Day Free Returns
Guarantee: Chris King Warranty

Read Before Ordering

The Chris King ISO AB 110x20mm Boost Axle Cap converts the new ISO AB boost front hub to 20mm Boost.


1. Loosen the adjustment clamp bolt.  This will make removal of the non-disc side easier.

2. Take a long punch, wooden dowl, or similar item, and insert it through either end of the axle.

3. With the tool, press on the inner lip of the insert while holding the shell.  The insert should pop out.

4. Repeat for the opposite side.



1. Prep the insert and axle by rubbing anti-seize, or assembly lube on the axle/insert interface.

2. Press the insert into the axle.

AVT Bike Works is proud to offer Chris King Precision Components
  • AVT.Bike is an authorized Chris King® dealer and proud to carry one of the largest selections of Chris King products available online and shipped anywhere in the world.
  • Chris King components including hubs, headsets and bottom brackets are all available in 9 standard in stock colors. Plus 2 new 2019 colors (Matte Mango & Matte Turquoise). Other colors and product options are available depending on stock levels, so if you don't see the color or exact product you are looking for please contact us.
  • We typically ship out Chris King product in around 3 days from placing your order, but in some cases this can take a few days longer as many hubs, headsets and BB's are built to order.
  • If you have any technical questions at all on Chris King products please contact us and we'll be pleased to help you out!
  • Information on Chris King warranty can be found here.
  • Instructions on how to service Chris King bearings can be found here.
  • Technical Information on Chris King product including service manuals can be found here.