Wanting to upgrade sprockets on Vitacci GTX 250

[Aceoritoes]

Hello everyone, I recently wrecked my bike so I’m having to order parts to get it back on the road and got to thinking about wanting to do some upgrades. Can anyone point me in the direction of some sprockets that will give me a little more top end speed and any other upgrades


And if anyone has had any luck ordering replacement parts let me know I need new fairings and having a hard time trying to find some