what should be the first 3 or 4 aftermarket parts should i get for my Z? nerfs, tires, etcs.

 

Exhaust, jetting, pro flow air filter, filter adaptor and take the lid off the air box.

 

Nerfs,tether switch,steering stabilizer,tires (for your type of riding).
For performance,get shocks first. Once a machine can handle,it can go faster. [img]i/expressions/face-icon-small-wink.gif[/img] after all that,find a motor builder and get what parts he recommends to work with his motor.
Have fun [img]i/expressions/face-icon-small-smile.gif[/img]

 

shocks