First
Remove the "old wheel" (13)
Switch the disc (15) to the "new" wheel (can be from a ST or a 900SSie or a Monster S4)
Then, remove the sprocket carrier (21) and take off the rubber thing (27) and the washer (25)
Insert the washer (machined with inner diameter of 30mm and 1,5mm wide - the outer diameter is 33mm but can be more) inside the part 22. Keep the coin to take a coffee after the assembly
Now, the part 22 (standart comes from inside to outsite) will take place in the sprocket carrier (21)
Pic a nice tire and mount it
(In my case a Continental ContiSportAttack)
Put the wheel on place and... That´s it
Have fun [moto]