# what size bearings do hubstacks use?

**URL:** <https://forums.yoyoexpert.com/t/what-size-bearings-do-hubstacks-use/35674>\
**Category:** Yo-Yo Mods and Maintenance\
**Created:** [March 10, 2012, 6:45am UTC](https://forums.yoyoexpert.com/t/what-size-bearings-do-hubstacks-use/35674 "2012-03-10T06:45:39Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![jrspike](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jrspike](https://forums.yoyoexpert.com/u/jrspike)\
**Post date:** [March 10, 2012, 6:45am UTC](https://forums.yoyoexpert.com/t/what-size-bearings-do-hubstacks-use/35674/1 "2012-03-10T06:45:39Z")

</div>

it appears to be a small d sized bearing, is that true? or is it a special size, cause i’m think about getting a pair of z-stacks or rice stacks with my next order seeing as they’re fairly cheap, i have a couple d size bearings laying around, and i’ve always wanted to try hubstacking one of my throws

---

<div class="post-metadata">

**Author:** ![mx.yoyo](https://avatars.discourse-cdn.com/v4/letter/m/dbc845/32.png) [@mx.yoyo](https://forums.yoyoexpert.com/u/mx.yoyo)\
**Post date:** [March 10, 2012, 6:57am UTC](https://forums.yoyoexpert.com/t/what-size-bearings-do-hubstacks-use/35674/2 "2012-03-10T06:57:39Z")

</div>

They use A-sized bearings

---

<div class="post-metadata">

**Author:** ![anonyo](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@anonyo](https://forums.yoyoexpert.com/u/anonyo)\
**Post date:** [March 10, 2012, 7:23am UTC](https://forums.yoyoexpert.com/t/what-size-bearings-do-hubstacks-use/35674/3 "2012-03-10T07:23:36Z")

</div>

Yup. A sized bearings. I think also there is a Terrapin X kit with a pair of bearings for stacks.

A and D sized bearings are close in size, but they aren’t interchangeable. I got a Beysick someone put an A-bearing in it and it played horribly. I got a Terrapin X Wing Cut D sized bearing and it plays really nice now.

---

<div class="post-metadata">

**Author:** ![jrspike](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jrspike](https://forums.yoyoexpert.com/u/jrspike)\
**Post date:** [March 10, 2012, 3:25pm UTC](https://forums.yoyoexpert.com/t/what-size-bearings-do-hubstacks-use/35674/4 "2012-03-10T15:25:22Z")

</div>

oh okay, thanks for the info guys.