i changed my oil today for the first time, i used the oil that you buy at the dealer thats made for honda bikes. i have a cbr1000rr, and after the fact i went to my local parking lot where i stunt and after about 2 hours of stunting the clutch started slipping. so i checked the oil level and it was way over filled, could the oil being too high cause slipping in the clutch over a period of hard riding?

 

The excess oil probably had nothing to do with your clutch slipping. Your clutch was probably slipping because you were stunting for 2+ hours and it was just getting overheated. However if there is too much oil, you should drain out a bit so that it's between the upper and lower limits.

 

ok, cool. im going to drain some of the oil out today

 

but most ppl who stunt hard overfill ther oil a bit so i dont think it will hurt it i know you cant do it in a zuki but you can in a honda

 

Too much oil while stunting will eventually fill your air box with oil (you dont believe me ??? have a look and see after pulling endless wheelies).. it runs back down the breather tube into the air box behind the filter...
also you risk building up enormous back pressure capable of blowing a few oil seals.. get the oil level right.. thats why honda have engineers to get the levels and tolerences right for your engines wellbeing not somewhere near..