Here we have a great item! This is 2 new sets ( enough for 1 engine) of Standard ( STD.)  size piston rings for the  now vintage Kawasaki KZ440 motorcycles. These were the Kawasaki models made in  1980 1981 1982 1983.   This has the 2 compression rings for both pistons and the lower oil control rings.  New in the package, top quality aftermarket item. We only sell the best.  That is it!