Can I replace the stock handguards with something better?
Aluminum handguards are a great improvement. Maier Woods Pro Deluxe (p/n 59525; if you have “fat” bars, you will need p/n 595340 as well) will fit without cutting down the ends of the clutch/brake levers. The plastic wind deflectors must be ordered separately (black: p/n 595340; other colors available). Another option is the Acerbis Rally Pro, although they are a bit lighter and may need to be bent back after a crash. (Avoid the Rally guards with integral turn signals; they don’t have a metal reinforcement, and can bend enough to break levers.) Other options are Moose, Enduro Engineering and Tusk guards. Tusks are very inexpensive, and available from Rocky Mountain ATV [links].