I have 21" Bandits on the front of my KFX. IF i put the handle bars straight, i noticed that the wheels curve inwards in the front. If you stand behind the quad, the curve is so bad! stand in front, it doesn't look as bad,. but its noticable. Anyways, when I am riding, when i hit around 3rd gear and up, the handle bars shake like crazy, and i don't know why.. does anyone here?
I am thinking it is because of the curving in that when i get higher in speed the wheels are messing up when they roll..

please help!

 

What you are describing is called "Toe-In". It is a normal phenomenon on any wheeled vehicle and is required for proper traction control. However, if you feel that you toe-in is out of alignment, consult you owner's manual for the required dimensions and adjust the toe-in via lengthening or shortening the tie-rods. Measurements of toe-in are obtained by measuring the distance from centerpoint of both tires on the front and back of the tires. Generally, about a half to three quarters of an inch toe-in is standard.

Happy Riding

~HoundDog