The stock Smasher isn't very fast, but FMS does make a speed motor upgrade that's $16 (or $38 with a heatsink + battery) and it's a pretty good value. Especially if you grab the Smasher on sale. I had that as my setup for a year before I moved on to the FCX24 version of the Furitek combo you added in here. I don't have a GNSS, but I strapped my GPS watch to it and the FMS speed motor was clocked at 11mph. 20mph with the Furitek. But I'd take that with a grain of salt since they were pretty short runs.