The clutch pack has two narrow friction plates in it, the rest of them are wide plates. They are the first and last friction plates in the pack. You can remove the clutch pack down to the large circlip which is actually a thin wire which is around the clutch housing, the ends of it are in a hole. Remove the circlip, steel plate, narrow friction plate, spring and seat plate. Take the narrow friction plate, circlip, spring and seat plate and set them aside because they are not going to be reinstalled. Now install a new wide friction plate, don't install it dry, soak it in oil for a while, then the steel plate removed earlier and then the rest of the clutch pack. They say you can also change the first narrow friction plate for a new wide one but I found that the inside diameter of the wide plate is smaller than the narrow plate and would not properly fit the rear of my stock pressure plate. Seems like a lot of work for a little more friction surface area but if you enjoy tinkering have at it. The parts left out are an anti chatter set up used when installed in a bike.