Here is a very helpful item for your SR185 Exciter motorcycle. This is a new Standard size (STD.) piston rings set for the  1981 1982 Models. These are for the stock bore and perfect for for stock standard Yamaha pistons. Correct replacement for part # 5G2-11610-00. 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.