R33 s2 gtst throw out bearing

[zackr33]

Hi all,

 

Currently doing a clutch on my s2 r33 and found that the throw out bearing that was in the transmission has some piece on it that the new one doesn't, now I obviously need to remove it but do i press it off and press it on the new bearing? Or have I been given the wrong bearing?

 

Any help is appreciated, thanks