Shimano cassette Sram Cassette - Both 9 speed

[motorhommer]

Are these completely interchangeable on rear wheel without changing the freewheel ?

 

[boudreaux]

Are these completely interchangeable on rear wheel without changing the freewheel ?

Yeah............There is no freewheel.It's a freehub

 

[Doctor Morbius]

Are these completely interchangeable on rear wheel without changing the freewheel?

Yes they are. If you get a little extra chain noise or have a little difficulty shifting it may take a slight turn of the barrel adjuster on the rear derailleur.