does anyones handle bars (grips) vibrate alot above 75mph? mine is so bad, parts of my hands go numb!

 

vibration is normal
i dont notice any change when going faster

check ur tire pressure and if the tire is well balanced

 

Does it feel like you're dribbling the tire or like you're riding in gravel?

 

Everyone I know has felt the same "buz" in the handlebars. I went out and bought some HVMP weighted bar ends and that has helped a great deal.

 

Sounds like something is wrong. Your hands shouldn't be numb. And you shouldn't notice any stronger of a vibration above 75mph. You should feel a small vibration all the time, anything else is an indicator that something is wrong.

 

tire pressure is good. balance is good. i guess its normal.

 

Yes, it is normal, only to do is what BrianAZ says about the bar ends, sorry!

 

Do you have bar ends? if you dont. that will make your hands buzz like crazy.. a nice pair of HEAVY bar ends will make a WORLD of diffrence..

make sure someone else before you didnt mod the bike with a light weight bar end that just "looks" cool.. thats one part of the bike you want as heavy as possible!

 

also suspension

try laying off the pressure off the handle bars
grab the tank with ur legs

 

if you find out that everthing is alright but there is still vibration, try filling half the clipon with sand.i have never tried this because i don't have the prob, but i have always thought it would work. let me know if you try it.