Slip Yoke Driveshaft

My 05'Rubicon's rear driveshaft is very differant from a standard Wrangler slip yoke. It appears to be a slip-member driveshaft, but I am not sure. The factory says "Slip yoke "collar" assembly in the rear driveshaft handles the extra output". but it appears differant from a standard slip yoke. Any help would be cool.

SYE is the best choice

I know it is the best choice. I want to know what this is on my jeep. it seems to have a balancer on the youke, before the u-joint.