So back to the rear skid.
There have been significant changes to the rear which improves its characteristics in deep snow. First, the rail profile was changed giving the front part of the rails a bigger curve radius. Rather than a longer, gradual tip up, the curve radius stays flat longer and then rolls up more abruptly. This has created more travel and better ride control.
The front arm shock is 1.25-inches longer. The shock pull rod and the idler arm are also different to match the increased length of the shock.
All of these changes are designed to allow the backend to get up on top of the snow much faster. Combine this with Cat’s Power Claw track and you find the sled coming up out of the snow and floating on top much easier.