I know the Suzuki gs500e can keep up with a Suzuki gsxr600 because I had a Suzuki katana gsx600f and I could keep up with a Suzuki gsxr750 I have beat a Suzuki gsxr750 ,Yamaha r6 Honda CBR600 and a Kawasaki zx6 with my Suzuki katana gsx600f on the top end the fastest I had my bike is 120 130 but I had more to go