Honda Grom on front reciever?

I think you're fine. We've carried a TW200 for thousands of miles - I seriously doubt you'll know a Grom is up there. A few things: get a really good carrier. The Harbor Freight ones are pretty flimsy and that's not a place you want something to fail (we've got a VersaHaul), plus the cheap ones can really flex. We have a Ram and they make a low and high hitch for the front. Make sure you're getting the lowest receiver they sell for your Ford. The bike may block your headlights, so it may limit your driving hours. I need to roll my brake lever up when traveling. If we take a good bump the flex was allowing the lever to hit the hood. We've had no trouble with blocking the air flow to the radiator - no noticeable change in engine temp, and we've done long miles in the summer heat of the South. That said, remember you'll be adding about 3' to the front of the truck. It gets to be a pain maneuvering, and you really have to watch your clearance going over dips.