Here is a great find. This is a new in the package ring set  (complete set of rings for all (3) pistons) for the  1978 1979 XS750 Triple motorcycles.  If you are looking to replace your rings on your stock original size Yamaha piston, then this is the correct part for you. This is correct for OEM part # 2F3-11610-00, 2F3-11610-03, 2F3-11601-23... This is a standard 68mm size (STD) ring set.  Top quality aftermarket item.  This has the 2 compression rings and the lower 3pc oil control ring, everything to get your piston compression back where it should be.  A great deal!   Get your old bike up and running again. We only sell the best!   Also please note the 1977 XS 750 used a different design/ part # rings set....we do stock that also on the website..just search XS750 in the search tab.