Sold as two bushings and a sticker.
WFB or Worlds Fastest Bushing- is a special formulation of urethane where there is a lubricant mixed in to the urethane. Which is why these bushings will sometime look a little crusty.
The result is an even deeper turn than the APS allows. So if you are looking for a bushing that is supportive but still allows full controlled deep turns, then throw some of that WFB into the mix.
Cone Bushings are the standard shape of 50° Reverse kingpin trucks. They offer the least amount of resistance to break from center and definitely offer the least amount of return to center.
We've set these up board side for really light riders, but most of the time you will find these on your road side.