Yep I've got an mr250 . Restored back to original spec , will be used in selected vinduro's , when I finally do the last few bits . MR back wheel is the same as CR . Front wheel is the conical type hub , I think the same hub as XL motosport & MT , front brake cable is different to CR . Rear sprocket is dished , getting hard to get . There are some PBI ones around , but PBI now list them as NA .