Installing these seals on the front of my 89 KX80 had a minor fit problem. They didn't seem to be quite thick enough to seal properly to the retainer ring. I may have needed different hardware for spacing things, but in the end I got them together and no leaks - a good thing.
The original fork seals were leaking on my 1982 XT200J and I kept bottoming out so I ordered this set. Fit, finish, and quality as original and very easy to change. If you've never attempted changing fork seals, there are some great videos up on You Tube.
these fork seals have always worked great. they are a great value and hold up just like factory seals. never had a good experience with the "leak proof" seals. sometimes the simple, inexpensive parts are the best