That looks to be one well sorted rig and real eye candy too! Who makes that front fork?
It is all EML. When you buy a EML sidecar you get the kit designed for the make model and year of your bike. It comes with everything, the subframe, suspension, steering dampener, wheels, and tires. In this case it’s a center hub steering design, again all EML. In most cases when you buy a sidecar you attach the sidecar to the bike. With EML you attach the bike to the sidecar.
Yes it’s well sorted and stupid fast. I bought it from a guy in Chicago that bought it from the importer and builder of this rig. I believe the guy I bought it from only owned it for a month. This is not a beginner sidecar, this is my forth sidecar and my second EML rig.