Here is a very helpful item for your XJ750. This is a new Standard size (STD.) piston rings set for the 1981 1982 1983 XJ750 Models. This includes the Seca, Maxim and Midnight Maxim. These are for the stock 65mm bore and perfect for for stock standard Yamaha pistons. In this sale you get a full set of 4 rings..enough to rebuild 1 engine. Get your bike up and running again nicely. Rebuild or freshen up your compression. Top quality aftermarket item. Perfect fitment. No disappointments here, we only sell the best! Get your bike up and running nicely again.