4th wheel Kit?

[kingedwards99]

What exactly is the 4th wheel kit for? More sturdy?More topend? any one know? does anyone have this kit? and how does it work? Thanks

 

[Alatalo]

One thing it does is that it helps against interference between track and track tension adjuster, which obviously can happen if you tail land after a jump...

 

[Daranello]

also if ya lose the outside wheel you can run on 3wheels...but not 2

 

[NLVMAX]

I think it is recommended to use if studded. Also helps keep track straight and from derailing.