RK Vortex Gld O-Ring Stl OE Chain and Sprocket CBR600F2 91-96 / CBR600F3 91-96 RK Chain Model: GB530XSOZ1-108RK RK Chain Type: Gold O-Ring Vortex Front Sprocket: Steel 15 Tooth Vortex Rear Sprocket: Steel 43 Tooth Bike's Stock Gearing: 15-43