Yoshimura TRC PRO

[evant]

I just bought a Yoshimura TRC PRO series Slip On Exhaust. My question is, do I need to rejet if so what all do I need to do. Also, the bike is all stock I just bought it Saturday.

[YFZ#426]

i have the same pipe on my YFZ, buy the K and N powerkit it comes with a jet kit and filter. It is like 100 $ And YES you have to rejet

[evant]

Does anyone know what size jets I should put in?