i run it on the beach mainly. the sand there is coarse, and doesnt do as much damage as i would have expected. true sometimes a plastic spur gear will go when its in the soft stuff, same as it would with pebbles or gravel...

its stayed outta the diffs so far, and i am obviously very careful with the air filter. i have loads of bearings spare here, but tbh the sand doesnt getinto them if i stay off the real fine dry sand.