This is a very helpful and essential and item if you are restoring or riding a 1972, 1973, 1974, 1975 Yamaha TX750 twin cylinder motorcycle. Technically these were only produced in 1973 and 1974 but we have seen some registered as earlier and later models too.  This is for a pair of 2 piston rings sets (...so enough for  you or your mechanic to complete 1 engine).  These are STD. 80mm size. Correct replacement for part #341-11610-00-00 and superseded by #341-11610-01-00.  These are for the stock standard size Yamaha pistons.  Perfect fitment. No disappointments here, we only sell the best! Top quality aftermarket item.  Get your bike up and running nicely again. These sure are fast, fun bikes eh?    We also have complete engine gasket set for this bike. We look forward to doing business with you!