I have a 2015 163 xm and I'm installing the rear bumper. The instructions don't show how far you make it go past the end of the sled or where it should be mounted. Any photos of installs would be great to see before I start drilling holes.
No pics, but I mounted mine slightly further back than stock simply for the fact of being able to get a couple pair of hands in there a little easier. Not that I EVER GET STUCK!!!
Also make sure to counter bore the holes after drilling to prevent any gaps or weak rivets.
You want the bumper to go at least past the front side of the rear suspension drop bracket. Any bumper is meant to support the tunnel and the tunnels bend usually near the drop bracket