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post #1 of 3 (permalink) Old 08-27-2018, 07:54 PM Thread Starter
slayrr40's Avatar
Join Date: Apr 2018
Posts: 24
bearing swap prob with Ultima king spoke

Purchased a Ultima 21" front king spoke wheel, I new it came with the 1inch bearings and I was going to half to swap out with 25mm abs bearings. Prob I ran into is the 1inch bearings are thicker then my new abs bearings, so the new 25mm sit a little deeper into the hub of the wheel? I know I was going to half to make up the difference with the spacers, but this has turned into a pain in the ass, it is not just a swap out and go! Has anyone else ran into this issue with after market front wheels? I think I have the correct spacing on there now after 3 atempts but now can't get the abs light clear!!!!!

Last edited by slayrr40; 08-27-2018 at 07:57 PM.
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post #2 of 3 (permalink) Old 08-27-2018, 11:48 PM
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You will need to measure the difference in the thickness of the bearings. That is the size of spacers you will need.
The ABS bearing needs to be right next to the sensor for it to read correctly. Don't space it away from the sensor if the bearing sits deeper into the hub. Put the spacer under the bearing to move it back into proper location.

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post #3 of 3 (permalink) Old 08-30-2018, 07:47 AM Thread Starter
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yes i made the diff up with new spacer, putting a spacer behind the bearing isn't a good ideal unless you can machine something that has same diameter and opening as the bearing it will be behind. wish they made a kit or something? idk maybe they do? whole thing has been a pain in the ass. I guess for bikes with the 1 inch bearings these Ultima king spoke wheels will work fine but guys with the 25mm bearings its not a simple swap! thanks for info
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