This is a new in the package ring set (complete set of rings for both (2) pistons) for the Yamaha DOHC XS400 models from 1982 1983 (Seca and Maxim) These are the the DOHC (Double Over Head Cam) models and not the earlier DOHC (Single Overhead Cam models). If you do need rings set for the earlier SOHC cam models, please search in our store as we do have that style listed also. . 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 a standard (STD.) ring set. 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! Top-quality aftermarket item.
