hey man, congrats on the new quad ! they're a shit load of fun .
just pipes, filter kit and a re jet with an open air box will make a big difference, pipes like toomey t6's, pro circuits, paul turners and a few other low rpm pipes will do great in the trails. Some boyesen or carbon tech reeds will also make a small difference.
if you want some nerfs or bumpers, check out a member NYUK he might have pipes, nerfs and everything you need, maybe even a timing plate to advance the ignition timing to give you a bit more performance.
top right corner of the page is a "search" feature, use it.