This is the conversion kit on Amazon:

https://www.amazon.com/Slick-Revolution-Conversion-Boosted-Flywheel/dp/B07Q3WC9VR/

You gotta get a conversion kit to put them on a boosted board: https://www.amazon.com/dp/B07Q3WC9VR/ref=cm_sw_r_cp_apa_i_MaJODbSW98F2E

There's another comment on here talking about getting a higher tooth count pulley, which I'm looking into cause the torque loss when you put these monsters on is significant.

You also need truck risers if you are planning on using it on a mini x, the wheels are big enough that when you carve they'll rub against or "bite" the bottom of the board which will throw you off. I put half inch risers on and it still bites a little when I carve really hard so I have another set of quarter inch risers coming in, as well as longer bolts or "hardware" to accommodate the length.

Putting these on a mini x is kind of a project 😅 don't expect to just buy these wheels and slap them on and go, I knew going in that it wasn't going to be that simple