I just delivered a new 21 Liberator to a State cop in Oklahoma. This is his first boat! I took it out to break it in for him with a new prop I wanted to try. It was a 32" four blade Drag Four by Performance Propellers. I ran the boat for an hour, then made 3 passes before putting it on the trailer to be delivered the next day. The slowest pass was 105.5. The best was 106.4 mph! This was on a 1.3 mile long lake that I test on. It was also 93 degrees and 100% humidity. [That's normal here in Fl.] It was at 6050 rpm. I really think it could run close to 110 in the winter. These new motors are faster than the 300X's on the Liberators. Here's some pics.