must have for xmod lovers because even if your not a good driver you will shear the stock plastic ones from drifting to racing. these also allow the wheel nuts to go on smoother. these take away binding and wheel slop while running smoother than imagined
If you like to go from rest to full throttle like I do, you'll need these because the dog bones eventually snap. These also help eliminate wheel wobble. The white plastic thing was a bit confusing at first, but you just have to take it off and replace it after you put your plastic bearing on. Great product.