The front and rear wheel motorcycle IZH are absolutely identical. The difference is only in the filling. On the front wheel on the splined hub there is a driving gear of the speedometer drive. And on the rear wheel a torque is transmitted to the splined hub.
Over time, the splined bushing wears out on the rear wheel, as seen in the photo. Change the seats front and rear wheel, and the motorcycle target for a long time.
To remove the rear wheel should not more than 5 minutes. This is convenient if you want to change the wheel with the road tire to the wheel with a cross rail.