MY SAVAGE HAS A 2 SPEED AND SH28 IN IT AND O GOD DOES IT HAUL. WHEN ME AND MY POPS' MAMMOTH RACE I KEEP ABOUT THE SAME SPEED AS HIM BUT IM AHEAD FROM THE QUICK ACCELERATION DUE TO THE POWER OF MY ENGINE BECAUSE IT HITS TOP END LIKE "BOOM". PEOPLE SAY THAT THE MAMMOTH GOES 52MPH AT ITS VERY TOP SPEED SO I WOULD EMAGION THAT ONE A REQULAR BASSIS I AM RUNNING 45-48MPH TOP SPEED. I DO PASS UP THE BUGGYS AT THE TRACK TOO. (AT LEAST THE STRAIGHT AWAY).