The bearings for the road wheels are great to reduce friction and increase battery time, but I think the idler wheel is the single most important upgrade you can make.



It has nothing but plastic on metal there, not even a bushing. So in time the stock idler will begin to wear out and cause track misalignment.

The metal elevation arm is a nice item for all tanks. The stock kit tracks work great and won't tax the gearbox like metal will, but if you do go metal on the tracks you know eventually a metal gearbox is in the future.

Basically the kit is trouble free. Anything you add will increase durability and performance plus just make it look better but the bearings in the road wheels and especially the idler are number one.