2011 engine noise?

[cold_612]

Hey guys, was riding the other night and the engine started to begin making a ticking/knocking sound. Only has about 4 hours on new piston, and did find some very fine metal shavings when I changed the oil yesterday. The bike was running fine then suddenly part way through a lap could here it change. Anyone else have this? Could it be valves or timing chain maybe? I'm not sure if I should keep riding it or not

[Qqqqqqqqqqqq]

If you have unusual noise on a fresh motor it's best to investigate , if it was my bike I would not ride it .