Does the MonoRail touch the bike frame?

No. Bikes are held by the wheels in trays, so there is no frame or fork contact.

Can I carry three bikes?

Only on the 2-inch model, and only with the add-on. The 1.25-inch version is not compatible with the add-on and stays at two bikes.

Yes. RockyMounts rates the MonoRail for heavy-duty e-bikes as well as lightweight road bikes.

It comes in a 1.25-inch and a 2-inch version. Check your receiver size before ordering.

It mounts in a standard hitch receiver and loads bikes without tools, which is the main ease-of-use point RockyMounts makes for it.

At etrailer.com, for $527.60, as of our latest check.

14 stores we checked sell it, including etrailer.com, Rack Attack, Bicycles East, Trek Bicycle, Backcountry.com.

$527.60at etrailer.comChecked 2 h ago

Compared across 13 stores. Prices are checked against each store and labelled with when.

It checks today's price at every store, compares the alternatives and answers in about a minute.