I saw a spec sheet on this when I bought my first Speedster (1995). According to Sea Doo, the '95 Sportster tops out at 42 MPH. One small mod you can do is change the cone on the end of the pump. The '95s had a blundt cone....when I upgraded my 95 Speedster with the new, sleeker cones, I gained 1 MPH to my top speed (verified by GPS).