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Hello, I was interested in putting some JRx2 wheels on a kyosho ultima pro. Can someone please tell me which correct wheel hub to use for this application?

Thanks,
Lebowski

Are you running universals or dog bones and axles in the rear?

If you have axles, switch them to tamiya or hpi 39mm axles. Use a drive pin w/ no hex hub. Easy breazy.
If you have uni's and want to keep them, you'll have to cross drill the uni for a pin.
You can also buy new uni's that are already cross drilled. I think the right length is 62.5mm ones.

Now the front. The easy way is buy Losi or Associated blocks and carriers, and axles. The Associated pieces would be more abundant, and allow caster adjustment via which carrier you choose. There are other ways too, but that's probably the easiest and cheapest. Associated PN you need are 6210, 6220, 6221,6223.

They are universals, it almost seems as if the wheel hubs have been pressed on, if that makes sense? I almost want to do what you did and put those HPI 5-star wheels on there. Were you able to find those front wheel hpi 5-star wheels or did you modify and cut them down from regular rear sized ones?

Never mind just got your PM