If it went through a safety, I'd still check the chain/sprockets, brake pads and tires.
Other than that, I'd say the usual maintenance items, plugs, oil/filter, air filter, brake and clutch fluid for cleanliness (probably good to change as you don't know the history).
Check all the electrical plugs, bolts and nuts to make sure everything is tight and secure.
Make sure the battery is GTG and if in doubt, get another (nothing worse than being left somewhere).