No not tried I think they are supposed to have this bearing although it may work with stock I think there won't be as much travel, do you know the thickness of a new friction disc?
Ah ok,I never really though to measure the new disc I had to be honest.Just because I have a used disc with this clutch and unsure of how worn it is, think the bearing is 70 plus shipping
What did it cost you? Nengun has a full rebuild with disc pressure plate bolts sleeve and release bearing for 250, mines a DS so has a slightly different pressure plate and 6 little springs though, no pic but it doesn't look too bad but all depends on original thickness