I've had mine for a year (UK spec, so I'm not sure if the Oz one is any different) and greenlane/ride trials on it most weekends.
My tips would be, depending on how much off roading you are planning, would be to:
- Fit a decent bashplate: CRD do a good one that has taken lots of abuse on my bike. The OEM engine bars are useless and the crankcases might get damaged by rocks etc.
- If you are in or might go to wettish parts, I would sort out the engine breathers - see an earlier post:
The cheapest route is to pickup a couple (the XT600 carbs have 2 breathers) of plastic tpieces and some airline from an aquarium/pet shop (about 1 pound in the UK), cut the original breathers nice and high up, connect the cut pipes and two new lengths to each side. The 'under the seat' pipes should be situated *UNDERNEATH* the level of the air intake in case of a deep dousing - this ensures that the engine cuts out before sucking in water....
- Tyres: Conti Twinduro's or Michelin Deserts seem to be the recommended things depending what conditions you are heading for. Cornwall, the bit of the UK I hail from, is extremely damp & rocky - I find the Conti's ideal with a life of 6 months/2,000 miles before bald.
- Finally, Acerbis tank - the 23 litre tank is lighter than the OEM steel one, gets rid of the annoying and damage prone 'wings' and of course holds 23 litres of fuel (although I've only bunged in 15l max..)
It's a brilliant bike and is so much better of road than it ought to be! - have fun!