You don't say where its going, but make sure its spotlessly clean with no visible mud anywhere to prevent problems with Quarantine organisations.
I exported a vintage motorcycle to Melbourne and on arrival, a small patch of dried mud was found under the rear guard along with a few critters in the crate. Enough to need the crate fumigated and the bike steam cleaned for a fee of about 250 quid that I'd not planned for!
Arwyn