This kit is designed to improve jetting from factory settings. It utilizes bigger jets and a needle with a different taper to provide more power, crisp throttle response and eliminate mid-range bog. Recommended altitudes 0-2500ft.
Kit includes:
-5N13 Needle
-220 Main Jet
-25 Pilot Jet
Recommended 2 turns out on the air screw and needle at 2nd position from top.