I let an unemployed jackass ride my bike and he missed 2nd gear at full throttle dont know wat he did but this what happened,Bike had a rebuilt top-end,cylinder was just replated fresh oil,filter changed,the rod broke in two pieces,crankshaft and bearings are still good.Question is will the over reving would cause this. Im trying to get back on the road, The bike is a 2001 K-5 wouldnt mine trying to buy a bottom end with a good transmission and cases ,My electrical,carb. is still good and