Description Kawasaki Ultra 300 and 310 OEM Size Pulley Installation Kawasaki Ultra 300 and 310 Stage 3 Pulley Installation Please choose from the options below. KP OEM size supercharger pulley is a direct replacement for OEM, but made of Billet lightweight aluminum, with a black hardcoat for extended belt life and wear. The Stage 3 supercharger pulley delivers 3 extra pounds of boost. A tune is REQUIRED!
