depends on what motor you are using,rs42 if that has the 15fe no offense but 50 no way, before I switched my sx12 nova mega in my serpent to the sx 12re turbo I did circles around my buddies rs4ss. and my serpent was probaly close to 60mph. we put my sx12 side exaust in his rs4, wow it flies, just as fast as my impulse pro. however he keeps stripping gears and the motor mounts keep coming loose w/lock tite.