and how old are you?What about a dildo that is glued to the seat. so when you rev up your quad, you can feel the dildo vibrate.
i have about 1000$Jet kits are a waste of money, rarely are they spot on.
What is your budget to spend?
Second, what type of riding do you do?
Third...when you say stock, you mean 100% bone stock, as in stock pipes, stock air filter and airbox, stock reeds, stock everything, correct??
You're going to get 30 recommendations on what to buy first, but without knowing your budget and how/where you ride....you're not getting and sound advice...