eTrailer and U-haul both have a front hitch-receiver for the E-series.
I have a BuckStop bumper, but those off-the-shelf options are just fine for a single dirt-bike.
The dirt-bike tires can cast a head-light shadow. I fitted my dirt-bike rack with some inexpensive driving lights to fill in those shadows. I also added some turn signals to make sure the van's aren't obscured from any angle.
2000 Ford E450 V10 VAN! 450,000+ miles
2014 ORV really big trailer
2015 Ford Focus ST