For front hubs, i.e. the wheel bearings you need any lithium based multipurpose grease, I usually use Castrol LM. The spec according to the Haynes manual is NLGI-2 so check that the grease you buy is to that spec or better.
Smo has given pointers as to what to use for the steering swivel, the grease for that being a special semi-fluid grease which wouldn't work in the wheel bearings.
Regards
Wolfie
Actually I'm about to experiment with CV joint grease in the racer's hubs as it has a higher melting point, in the hope that I won't ruin another bearing (and stub axle, and hub). That is unless I happen across a tub of Castrol BNS tomorrow.