Not original. See the photo where I show this sprocket (with yellow sticket) next to the original one (black sticker). Original was bought in Netherlands in the bike shop - it was mounted on a new German bike. I don't know how long this Chinese sprocket will work but I doubt if it will serve as long as the original. It looks decent but I don't know the quality of metal. So far I made around 130km without problems but I doubt it will make 20,000km...
very efficient and trusted seller. product delivered fast and packed in good condition as always. thank you