Here's the situation, I ordered an older model rpm axle(dominator) off of ebay. My brother ordered a new rpm axle(dominator) from rpm a week ago. We got the axles and compared them. Mine is the older style and has different threads than my brothers. I can put my stock axle nuts on my rpm, but the stock axle nuts will not fit on my brothers. Anyone know what threads the new rpm axles have? What nut should my brother buy? Thanks.