Need wheel measurements DX36, RXB, XF 250s
 

I'm going to build a flat track mad dog class race bike out of a 2020 Thumpstar TSX-190 which I just picked up today for a sweet deal (Zong 190 with a broken tranny shaft). I need to find a 17" rear wheel with a rim anywhere from 2.5-3.5" wide but what I really need to know is the distance from the inside of the rear sprocket to the inside of the rear brake rotor of the DX36, RXL and XF 250's, doesn't matter if supemoto or dirt wheels as the hubs are the same.

These could be cheap wheels that might be able to fit with a big enough hammer ;). Might need to graft on longer swingarm though?

If anyone has 17" SM wheels for sale let me know too. Or a swingarm!

Much appreciated, no dealers have these around me right now.

Also what is the chain size on these 250s?

No one? Just stick a tape measurer thru the spokes. Just need to know how far the rear sprocket and brake rotor are apart.

PLEASE can someone measure the rear sprocket to brake rotor distance on an Apollo DX36? Just stick a tape between the spokes. I don't want to buy a wheel to find out it won't fit!

I now know the XF 250 won't but I have no access to a DX36. THANKS.