If you could get the kit, I would think it wouldn't be to hard to make the 450R nerfs fit 250R. I have a set of the Houser nerfs on my 450R, they attach at the footpegs, the front mount then attaches to the frame with U-bolts, then you just have to figure out the heel guards. I think it could be done, just not sure where that front mount would end up in relation to a 250R frame.there are kits to mount 450R footpegs on the 250r, so I would think if you use those then the houser nerfs would fit... ??