2004 Honda cbr1000rr rod knocking?

I went for a ride tonight and on my way home it started making this horrible noise and check the oil seem to be a little low lower than usual I didn't see it in the class unless I really tip the bike over so what ahead and top that off start the bike up let it run for a minute and then when I go to give it gas around 3000 RPMs it makes that horrible noise when the bike is idling it sounds fine like normal and over 4000 RPMs the sound goes away when I'm riding it and I engine break or do you know what just let go of the gas and once it gets around 4,000 RPMs or lower it makes that horrible knocking sound again, you guys be able to help me out

 

Hi, If the noise is from the right side of the engine, Then it could possible be a loose timing chain? Worth checking the cam chain tensioner first.
Lets hope its a simple fix

 

Ill take a look at the tensioner thanks. I really hope thats the prob

 

CCT is fine I still put in a manual one sense I ordered it. Still knocks at 3k rpm.

 

I hope I am wrong but could it be a big end gone.