Although I exchanged a chain of motorcycles to a seal chain a couple of years ago, I felt that the movement of the chain itself was hard and I felt that the elongation ceased at high speed, so I tried to exchange for a nonseal this time. I have not been riding since exchanging, but I am looking forward to ride the movement softer than the seal chain.
As I changed the chain again I changed my running. It is especially noticeable for inactive motorbikes. However, it is better to remove grease with high viscosity attached at the time of purchase. As soon as I removed it, my running changed again. I am comfortably and smoothly running.