Hello MOJO_ski_trip
Firstly, welcome to the SBB Community.
The SBB is available from the U.S. by phone at 011 41 51 225 78 56 (24/7).
The express service is only offered for door-to-door shipments.
Can’t you send the luggage the day before travel? Or what about renting the ski equipment here in Switzerland?
Kind regards,
Roland