Installed my new DID gold and black x-ring chain and 15T front sprocket... zero regrets. They should have come with 15T to begin with... much more utility in long curvy state highways and great cruising RPMs at highway speeds (65-75mph) best part is that I'm not always trying to shift into 7th anymore.
Original sprocket 09 ninja 250 16000miles apr 13.jpg
It was definitely time to change them. They seem to be the originals and my bike has 16,000 miles.
next step will be replacing the back sprocket next month.