I am just trying to save you dudes time and money. I almost dumped the Raptor months after I bought it cause of the way it cornered. I went thru a bunch of trouble flipping the front wheels around, bending and breaking tie rods and ends, getting the crap beat out of my arms and hands from riding on rocky trails, when all I had to do is add spacers to the back. I eventually added +2 arms to the front. Mostly what they did is add travel to the front suspension and make it ride better. They help cornering stability a little, but mostly adds control at straight line high speeds.

If you think about it, over 2/3rds of the weight is on the back axle, and you power the turns, which trasnsfers more weight to the back. So, you can see why the wide front has little affect on cornering. Plus, the front suspension is free to sway, while the back isn't.

If you are like me, then then you will probably have to experiment for your self.

 

I added 2.5" Dura Blue spacers to the rear of mine.Seems to be better but not sure yet do to all the snow here.
Also lowered the front and rear by 4"....By lowering the front it made it about 3" wider.
I was going to go with spacers up front but I will wait and see how the lowering does first.
The lowering kit cost me $102.00 with shipping on E-bay and the spacers were $60.00 brand new on E-bay.
Hope this helps.

 

A buddy of mine has this, and it helps out alot. Click here. But also spacers are good, I would just put them on the back.

 

by lowering your raptor w/ kit....you better retune your suspension or it will ride like crap