The floor plan on Keystone's site shows the diagonal measurement to be 121", so you should be able to fit your bike in diagonally.
However, based on what I'm seeing, your Ranger is 108" long, 56.5" wide, and 73" Tall. So, how exactly are you planning on fitting a 56.5" wide vehicle through a 56" door, and fitting a 108" long vehicle into a garage that's only 93" deep? And the dry weight is 1, 050, so over the capacity? Are we talking about a different Ranger than
this?
2020 Keystone Montana High Country 294RL
2017 Ford F350 DRW King Ranch
2021 Ford F350 SRW Lariat Tremor