OK hear it goes, someone save me from myself. I just pulled my back wheel off and my front sprocket cover etc. I have what sounds like a load chain noise only on acceleration. If you decellerate its quiet. I cleaned and lubed the chain alot and took very good care of it. Tried to lube it, losened it, still funny noise on accell like a bad bearing couldnt find any water or bad bearing in rear wheel, although the drive cushes where kind of scared up from the hub rubbing in them not to bad though. I checked for play in the front sprocket none and I turned it no flat spots nothing. My buddy on the ZX12 was riding beside me he thought it was so loud he offerd me some chain lube at his house. Again this noise is on accel if you turn your head to the left just alittle and accel you hear it. Please tell me this is normal your bikes do it to its a Hayabusa trait or maybe someone has heard this same noise and has fixed it before????