In a dirt wheels they said they used a +4 250r axle which made the 400ex +6. I was looking at getting a used 250r axle to put on my 400ex for a cheap +2 until I can get a RPM. I was looking at the axles and it seems the 400ex's axle is shorter but its hubs are wider. My question is will 400ex hubs work on the 250r axle. Also were the ATC 250r axles and the TRX250r axles the same? Thanx for the help