clutch for my 1997 ZX XUD 1.9TD

[Poodle]

As Frosty (and the advert) says, it's described as two piece because the release bearing is part of the pressure plate. In push-type clutches (those for the hdi, for example) the release bearing is seperate, therefore when counted with the pressure plate and friction plate makes three "pieces". They're just different types of clutch, better or worse doesn't come into it.