Its also good to use cadency calculator and compare it to maximum rpm of engine.
https://www.bikecalc.com/speed_at_cadence
In my case in due of cadence and RPM its hard to exceed 53 kph, around ~100 is max M500 rpm.
(40T Front, 11-36T rear, 27.5x2.8 tyre)
My set:
To make it faster, for your...