Gripper ski, 2 styles?

[midwestmountain1]

Is there 2 sizes of gripper skis?
saw some for sale off of a 2010 600shift 136" measured shy of 6" at the mount

my friend has a 2010 assaultRMK his measure at 6.75" at the mount

I cannot find any parts listing for for any ski other than the mountain 6.75"

so, were they modified or is there a different ski on the 136 shift?

 

[MARV1]

Regular IQ skis on the Shift 136", more for the trail rider.

 

[midwestmountain1]

These were not IQ skis, unless the IQ skis can come with the gripper bumps on the top.

Any ideas?