I think I got them from Quadratec for $150 ea.
The front is about 1-1/4" dia. and is MUCH more stable at high speeds. It really helps to get the tires to dig in.
I bought both front and rear but I'm working too hard to get the rear to come around so I'm going to disconnect the back to see if it helps. In my opinion it made the most difference in handling for the dollar, highly recommended!
...Oh just make sure you don't install them dry, use axle grease.
Again good to see you run at the last race, you were really kicking ass!
